Polysix contact strip
2012-07-23 by tonezone020
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Thread
2012-07-23 by tonezone020
Hi All, Does anyone know where I can get a couple of 6 bubble contact strips or alternatives for my synth, preferably in the Uk ? Many thanks in advance, Tony
2012-07-23 by bastebraak
Is the old one damaged or just not working well. I fixed the contacts on my polysix with a paste i ordered online. Verzonden vanaf Samsung Mobiletonezone020 <swamp.gigs@googlemail.com> schreef: Hi All, Does anyone know where I can get a couple of 6 bubble contact strips or alternatives for my synth, preferably in the Uk ? Many thanks in advance, Tony ------------------------------------ Yahoo! Groups Links [Non-text portions of this message have been removed]
2012-07-23 by tonezone020
Hi, Thanks for your message. I managed to sort the strips out - they had stretched, but with a bit of coaxing the keys are now working. Been slowly trying to fix the battery leak problem with a tiny bit of success and Old Crow's advice from his site. I discovered pin numbers 13 and 14 on IC31 are connected. Do you know if this should be so? There seems to be a copper trace on the underneath circuitry. It also appears to be the same for IC30... Thanks, Tony --- In PolySix@yahoogroups.com, bastebraak <bastebraak@...> wrote:
> > > > Is the old one damaged or just not working well. I fixed the contacts on my polysix with a paste i ordered online. > > > Verzonden vanaf Samsung Mobiletonezone020 <swamp.gigs@...> schreef: > Hi All, > > Does anyone know where I can get a couple of 6 bubble contact strips or alternatives for my synth, preferably in the Uk ? > > Many thanks in advance, > > Tony > > > > ------------------------------------ > > Yahoo! Groups Links > > > > > > [Non-text portions of this message have been removed] >
2012-07-23 by bastebraak
Sorry. I have no info on the pin numbers. But i bet some one will. Good luck! Verzonden vanaf Samsung Mobiletonezone020 <swamp.gigs@googlemail.com> schreef: Hi, Thanks for your message. I managed to sort the strips out - they had stretched, but with a bit of coaxing the keys are now working. Been slowly trying to fix the battery leak problem with a tiny bit of success and Old Crow's advice from his site. I discovered pin numbers 13 and 14 on IC31 are connected. Do you know if this should be so? There seems to be a copper trace on the underneath circuitry. It also appears to be the same for IC30... Thanks, Tony --- In PolySix@yahoogroups.com, bastebraak <bastebraak@...> wrote: > > > > Is the old one damaged or just not working well. I fixed the contacts on my polysix with a paste i ordered online. > > > Verzonden vanaf Samsung Mobiletonezone020 <swamp.gigs@...> schreef: > Hi All, > > Does anyone know where I can get a couple of 6 bubble contact strips or alternatives for my synth, preferably in the Uk ? > > Many thanks in advance, > > Tony > > > > ------------------------------------ > > Yahoo! Groups Links > > > > > > [Non-text portions of this message have been removed] > ------------------------------------ Yahoo! Groups Links [Non-text portions of this message have been removed]
2012-07-23 by Peter Mörck
Just compare with the schematics? BR, Peter
----- Original Message -----
From: tonezone020
To: PolySix@yahoogroups.com
Sent: Tuesday, July 24, 2012 12:52 AM
Subject: [PolySix] Re: Polysix contact strip
Hi,
Thanks for your message.
I managed to sort the strips out - they had stretched, but with a bit of coaxing the keys are now working.
Been slowly trying to fix the battery leak problem with a tiny bit of success and Old Crow's advice from his site.
I discovered pin numbers 13 and 14 on IC31 are connected. Do you know if this should be so? There seems to be a copper trace on the underneath circuitry. It also appears to be the same for IC30...
Thanks,
Tony
--- In PolySix@yahoogroups.com, bastebraak <bastebraak@...> wrote:
>
>
>
> Is the old one damaged or just not working well. I fixed the contacts on my polysix with a paste i ordered online.
>
>
> Verzonden vanaf Samsung Mobiletonezone020 <swamp.gigs@...> schreef:
> Hi All,
>
> Does anyone know where I can get a couple of 6 bubble contact strips or alternatives for my synth, preferably in the Uk ?
>
> Many thanks in advance,
>
> Tony
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>
>
>
> [Non-text portions of this message have been removed]
>
[Non-text portions of this message have been removed]2012-07-23 by tonezone020
Hi, Looking at the schematics it's hard to tell - it doesn't seem like there is one for the underside of the board ... Regards, Tony --- In PolySix@yahoogroups.com, Peter Mörck <peterm@...> wrote:
> > Just compare with the schematics? > > BR, > Peter > > ----- Original Message ----- > From: tonezone020 > To: PolySix@yahoogroups.com > Sent: Tuesday, July 24, 2012 12:52 AM > Subject: [PolySix] Re: Polysix contact strip > > > > Hi, > > Thanks for your message. > > I managed to sort the strips out - they had stretched, but with a bit of coaxing the keys are now working. > > Been slowly trying to fix the battery leak problem with a tiny bit of success and Old Crow's advice from his site. > > I discovered pin numbers 13 and 14 on IC31 are connected. Do you know if this should be so? There seems to be a copper trace on the underneath circuitry. It also appears to be the same for IC30... > > Thanks, > > Tony > > --- In PolySix@yahoogroups.com, bastebraak <bastebraak@> wrote: > > > > > > > > Is the old one damaged or just not working well. I fixed the contacts on my polysix with a paste i ordered online. > > > > > > Verzonden vanaf Samsung Mobiletonezone020 <swamp.gigs@> schreef: > > Hi All, > > > > Does anyone know where I can get a couple of 6 bubble contact strips or alternatives for my synth, preferably in the Uk ? > > > > Many thanks in advance, > > > > Tony > > > > > > > > ------------------------------------ > > > > Yahoo! Groups Links > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > > > [Non-text portions of this message have been removed] >
2012-07-24 by backshall1
Pins 1, 4, 10, 13, 14 are all connected together to +5vdc. Don Backshall _____
From: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com] On Behalf Of tonezone020 Sent: Monday, July 23, 2012 7:46 PM To: PolySix@yahoogroups.com Subject: [PolySix] Re: Polysix contact strip Hi, Looking at the schematics it's hard to tell - it doesn't seem like there is one for the underside of the board ... Regards, Tony --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> , Peter Mörck <peterm@...> wrote: > > Just compare with the schematics? > > BR, > Peter > > ----- Original Message ----- > From: tonezone020 > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > Sent: Tuesday, July 24, 2012 12:52 AM > Subject: [PolySix] Re: Polysix contact strip > > > > Hi, > > Thanks for your message. > > I managed to sort the strips out - they had stretched, but with a bit of coaxing the keys are now working. > > Been slowly trying to fix the battery leak problem with a tiny bit of success and Old Crow's advice from his site. > > I discovered pin numbers 13 and 14 on IC31 are connected. Do you know if this should be so? There seems to be a copper trace on the underneath circuitry. It also appears to be the same for IC30... > > Thanks, > > Tony > > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> , bastebraak <bastebraak@> wrote: > > > > > > > > Is the old one damaged or just not working well. I fixed the contacts on my polysix with a paste i ordered online. > > > > > > Verzonden vanaf Samsung Mobiletonezone020 <swamp.gigs@> schreef: > > Hi All, > > > > Does anyone know where I can get a couple of 6 bubble contact strips or alternatives for my synth, preferably in the Uk ? > > > > Many thanks in advance, > > > > Tony > > > > > > > > ------------------------------------ > > > > Yahoo! Groups Links > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > > > [Non-text portions of this message have been removed] > [Non-text portions of this message have been removed]
2012-07-24 by Peter Mörck
You must be looking at the board layout drawing. The schematics are different and have no "layers". They just show how it's connected without actual physical constraints. Anyway, I just looked and pins 1,4,10,13,14 of IC31 are tied to +5V :) By the way, I assume there's an error in the schematics indicating pin 4 tied to pin12 of the 8048, as it's also tied to +5V. Either that's pin 5 instead, or vice versa. IC31 is just a quad AND gate acting as a buffer. Each of the AND gates has one of its inputs tied to +5V so whatever appeard on the other input will also appear on the output of that gate. The traces under IC31 are usually attacked by the battery acid though and it is good if you do continuity testing around that area. BR, Peter
----- Original Message -----
From: tonezone020
To: PolySix@yahoogroups.com
Sent: Tuesday, July 24, 2012 1:45 AM
Subject: [PolySix] Re: Polysix contact strip
Hi,
Looking at the schematics it's hard to tell - it doesn't seem like there is one for the underside of the board ...
Regards,
Tony
--- In PolySix@yahoogroups.com, Peter Mörck <peterm@...> wrote:
>
> Just compare with the schematics?
>
> BR,
> Peter
>
> ----- Original Message -----
> From: tonezone020
> To: PolySix@yahoogroups.com
> Sent: Tuesday, July 24, 2012 12:52 AM
> Subject: [PolySix] Re: Polysix contact strip
>
>
>
> Hi,
>
> Thanks for your message.
>
> I managed to sort the strips out - they had stretched, but with a bit of coaxing the keys are now working.
>
> Been slowly trying to fix the battery leak problem with a tiny bit of success and Old Crow's advice from his site.
>
> I discovered pin numbers 13 and 14 on IC31 are connected. Do you know if this should be so? There seems to be a copper trace on the underneath circuitry. It also appears to be the same for IC30...
>
> Thanks,
>
> Tony
>
> --- In PolySix@yahoogroups.com, bastebraak <bastebraak@> wrote:
> >
> >
> >
> > Is the old one damaged or just not working well. I fixed the contacts on my polysix with a paste i ordered online.
> >
> >
> > Verzonden vanaf Samsung Mobiletonezone020 <swamp.gigs@> schreef:
> > Hi All,
> >
> > Does anyone know where I can get a couple of 6 bubble contact strips or alternatives for my synth, preferably in the Uk ?
> >
> > Many thanks in advance,
> >
> > Tony
> >
> >
> >
> > ------------------------------------
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> > [Non-text portions of this message have been removed]
> >
>
>
>
>
>
> [Non-text portions of this message have been removed]
>
[Non-text portions of this message have been removed]2012-07-24 by tonezone020
Hi Don, That's very helpful. I tested from pin 1 on IC31 across to the pins mentioned on both chips and pin 4 in both are display differing resistances, whereas the others are fine. Do you recommend bridging for to something in the chain ? I very much appreciate your help. Best wishes, Tony --- In PolySix@yahoogroups.com, "backshall1" <backshall1@...> wrote:
> > Pins 1, 4, 10, 13, 14 are all connected together to +5vdc. > > > > Don Backshall > > > > _____ > > From: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com] On Behalf Of > tonezone020 > Sent: Monday, July 23, 2012 7:46 PM > To: PolySix@yahoogroups.com > Subject: [PolySix] Re: Polysix contact strip > > > > > > Hi, > > Looking at the schematics it's hard to tell - it doesn't seem like there is > one for the underside of the board ... > > Regards, > > Tony > > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> , Peter > M�rck <peterm@> wrote: > > > > Just compare with the schematics? > > > > BR, > > Peter > > > > ----- Original Message ----- > > From: tonezone020 > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > > Sent: Tuesday, July 24, 2012 12:52 AM > > Subject: [PolySix] Re: Polysix contact strip > > > > > > > > Hi, > > > > Thanks for your message. > > > > I managed to sort the strips out - they had stretched, but with a bit of > coaxing the keys are now working. > > > > Been slowly trying to fix the battery leak problem with a tiny bit of > success and Old Crow's advice from his site. > > > > I discovered pin numbers 13 and 14 on IC31 are connected. Do you know if > this should be so? There seems to be a copper trace on the underneath > circuitry. It also appears to be the same for IC30... > > > > Thanks, > > > > Tony > > > > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> , > bastebraak <bastebraak@> wrote: > > > > > > > > > > > > Is the old one damaged or just not working well. I fixed the contacts on > my polysix with a paste i ordered online. > > > > > > > > > Verzonden vanaf Samsung Mobiletonezone020 <swamp.gigs@> schreef: > > > Hi All, > > > > > > Does anyone know where I can get a couple of 6 bubble contact strips or > alternatives for my synth, preferably in the Uk ? > > > > > > Many thanks in advance, > > > > > > Tony > > > > > > > > > > > > ------------------------------------ > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > > > [Non-text portions of this message have been removed] >
2012-07-24 by backshall1
Yes, there is an error in the schematics. Pin 5 is +5v, not pin 4. Pin 4 really does go to pin 12 on the 8048. I just checked a clone board and an old original KLM-367. They are the same. Don B. _____
From: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com] On Behalf Of Peter Mörck Sent: Monday, July 23, 2012 8:25 PM To: PolySix@yahoogroups.com Subject: Re: [PolySix] Re: Polysix contact strip You must be looking at the board layout drawing. The schematics are different and have no "layers". They just show how it's connected without actual physical constraints. Anyway, I just looked and pins 1,4,10,13,14 of IC31 are tied to +5V :) By the way, I assume there's an error in the schematics indicating pin 4 tied to pin12 of the 8048, as it's also tied to +5V. Either that's pin 5 instead, or vice versa. IC31 is just a quad AND gate acting as a buffer. Each of the AND gates has one of its inputs tied to +5V so whatever appeard on the other input will also appear on the output of that gate. The traces under IC31 are usually attacked by the battery acid though and it is good if you do continuity testing around that area. BR, Peter ----- Original Message ----- From: tonezone020 To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> Sent: Tuesday, July 24, 2012 1:45 AM Subject: [PolySix] Re: Polysix contact strip Hi, Looking at the schematics it's hard to tell - it doesn't seem like there is one for the underside of the board ... Regards, Tony --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> , Peter Mörck <peterm@...> wrote: > > Just compare with the schematics? > > BR, > Peter > > ----- Original Message ----- > From: tonezone020 > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > Sent: Tuesday, July 24, 2012 12:52 AM > Subject: [PolySix] Re: Polysix contact strip > > > > Hi, > > Thanks for your message. > > I managed to sort the strips out - they had stretched, but with a bit of coaxing the keys are now working. > > Been slowly trying to fix the battery leak problem with a tiny bit of success and Old Crow's advice from his site. > > I discovered pin numbers 13 and 14 on IC31 are connected. Do you know if this should be so? There seems to be a copper trace on the underneath circuitry. It also appears to be the same for IC30... > > Thanks, > > Tony > > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> , bastebraak <bastebraak@> wrote: > > > > > > > > Is the old one damaged or just not working well. I fixed the contacts on my polysix with a paste i ordered online. > > > > > > Verzonden vanaf Samsung Mobiletonezone020 <swamp.gigs@> schreef: > > Hi All, > > > > Does anyone know where I can get a couple of 6 bubble contact strips or alternatives for my synth, preferably in the Uk ? > > > > Many thanks in advance, > > > > Tony > > > > > > > > ------------------------------------ > > > > Yahoo! Groups Links > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > > > [Non-text portions of this message have been removed] > [Non-text portions of this message have been removed] [Non-text portions of this message have been removed]
2012-07-24 by backshall1
Sorry about that, try pin 5 instead. Don B. _____
From: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com] On Behalf Of tonezone020 Sent: Monday, July 23, 2012 8:30 PM To: PolySix@yahoogroups.com Subject: [PolySix] Re: Polysix contact strip Hi Don, That's very helpful. I tested from pin 1 on IC31 across to the pins mentioned on both chips and pin 4 in both are display differing resistances, whereas the others are fine. Do you recommend bridging for to something in the chain ? I very much appreciate your help. Best wishes, Tony --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> , "backshall1" <backshall1@...> wrote: > > Pins 1, 4, 10, 13, 14 are all connected together to +5vdc. > > > > Don Backshall > > > > _____ > > From: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> [mailto:PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> ] On Behalf Of > tonezone020 > Sent: Monday, July 23, 2012 7:46 PM > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > Subject: [PolySix] Re: Polysix contact strip > > > > > > Hi, > > Looking at the schematics it's hard to tell - it doesn't seem like there is > one for the underside of the board ... > > Regards, > > Tony > > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> <mailto:PolySix%40yahoogroups.com> , Peter > M�rck <peterm@> wrote: > > > > Just compare with the schematics? > > > > BR, > > Peter > > > > ----- Original Message ----- > > From: tonezone020 > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> <mailto:PolySix%40yahoogroups.com> > > Sent: Tuesday, July 24, 2012 12:52 AM > > Subject: [PolySix] Re: Polysix contact strip > > > > > > > > Hi, > > > > Thanks for your message. > > > > I managed to sort the strips out - they had stretched, but with a bit of > coaxing the keys are now working. > > > > Been slowly trying to fix the battery leak problem with a tiny bit of > success and Old Crow's advice from his site. > > > > I discovered pin numbers 13 and 14 on IC31 are connected. Do you know if > this should be so? There seems to be a copper trace on the underneath > circuitry. It also appears to be the same for IC30... > > > > Thanks, > > > > Tony > > > > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> <mailto:PolySix%40yahoogroups.com> , > bastebraak <bastebraak@> wrote: > > > > > > > > > > > > Is the old one damaged or just not working well. I fixed the contacts on > my polysix with a paste i ordered online. > > > > > > > > > Verzonden vanaf Samsung Mobiletonezone020 <swamp.gigs@> schreef: > > > Hi All, > > > > > > Does anyone know where I can get a couple of 6 bubble contact strips or > alternatives for my synth, preferably in the Uk ? > > > > > > Many thanks in advance, > > > > > > Tony > > > > > > > > > > > > ------------------------------------ > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > > > [Non-text portions of this message have been removed] > [Non-text portions of this message have been removed]
2012-07-24 by tonezone020
Hi Don and Peter, Your messages have been very helpful consequently I've discovered anomalies elsewhere... IC26 p5 doesn't connect to IC34 p5 - should I bridge this ? IC26 to IC32 connections are all fine. Also I think there's a mistake in the schematics. Rather than IC34 connecting to IC32 it seems to be IC26 p2, 1, 11, 10 that is connected to IC32 p2, 1, 17, 16 Regards, Tony --- In PolySix@yahoogroups.com, "backshall1" <backshall1@...> wrote:
> > Yes, there is an error in the schematics. Pin 5 is +5v, not pin 4. Pin 4 > really does go to pin 12 on the 8048. I just checked a clone board and an > old original KLM-367. They are the same. > > Don B. > > > > _____ > > From: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com] On Behalf Of > Peter Mörck > Sent: Monday, July 23, 2012 8:25 PM > To: PolySix@yahoogroups.com > Subject: Re: [PolySix] Re: Polysix contact strip > > > > > > You must be looking at the board layout drawing. > The schematics are different and have no "layers". They just show how it's > connected without actual physical constraints. > > Anyway, I just looked and pins 1,4,10,13,14 of IC31 are tied to +5V :) > > By the way, > I assume there's an error in the schematics indicating pin 4 tied to pin12 > of the 8048, as it's also tied to +5V. > Either that's pin 5 instead, or vice versa. > > IC31 is just a quad AND gate acting as a buffer. Each of the AND gates has > one of its inputs tied to +5V so whatever appeard on the other input will > also appear on the output of that gate. > > The traces under IC31 are usually attacked by the battery acid though and it > is good if you do continuity testing around that area. > > BR, > Peter > > ----- Original Message ----- > From: tonezone020 > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > Sent: Tuesday, July 24, 2012 1:45 AM > Subject: [PolySix] Re: Polysix contact strip > > Hi, > > Looking at the schematics it's hard to tell - it doesn't seem like there is > one for the underside of the board ... > > Regards, > > Tony > > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> , Peter > Mörck <peterm@> wrote: > > > > Just compare with the schematics? > > > > BR, > > Peter > > > > ----- Original Message ----- > > From: tonezone020 > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > > Sent: Tuesday, July 24, 2012 12:52 AM > > Subject: [PolySix] Re: Polysix contact strip > > > > > > > > Hi, > > > > Thanks for your message. > > > > I managed to sort the strips out - they had stretched, but with a bit of > coaxing the keys are now working. > > > > Been slowly trying to fix the battery leak problem with a tiny bit of > success and Old Crow's advice from his site. > > > > I discovered pin numbers 13 and 14 on IC31 are connected. Do you know if > this should be so? There seems to be a copper trace on the underneath > circuitry. It also appears to be the same for IC30... > > > > Thanks, > > > > Tony > > > > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> , > bastebraak <bastebraak@> wrote: > > > > > > > > > > > > Is the old one damaged or just not working well. I fixed the contacts on > my polysix with a paste i ordered online. > > > > > > > > > Verzonden vanaf Samsung Mobiletonezone020 <swamp.gigs@> schreef: > > > Hi All, > > > > > > Does anyone know where I can get a couple of 6 bubble contact strips or > alternatives for my synth, preferably in the Uk ? > > > > > > Many thanks in advance, > > > > > > Tony > > > > > > > > > > > > ------------------------------------ > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > [Non-text portions of this message have been removed] > > > > > > [Non-text portions of this message have been removed] >
2012-07-24 by tonezone020
Erm, Correction - that should be IC24 p2, 1, 11, 10 that is connected to IC32 p2, 1, 17, 16 Cheers, Tony --- In PolySix@yahoogroups.com, "tonezone020" <swamp.gigs@...> wrote:
> > Hi Don and Peter, > > Your messages have been very helpful consequently I've discovered anomalies elsewhere... > > IC26 p5 doesn't connect to IC34 p5 - should I bridge this ? > > IC26 to IC32 connections are all fine. > > Also I think there's a mistake in the schematics. Rather than IC34 connecting to IC32 it seems to be IC26 p2, 1, 11, 10 that is connected to IC32 p2, 1, 17, 16 > > Regards, > > Tony > > > --- In PolySix@yahoogroups.com, "backshall1" <backshall1@> wrote: > > > > Yes, there is an error in the schematics. Pin 5 is +5v, not pin 4. Pin 4 > > really does go to pin 12 on the 8048. I just checked a clone board and an > > old original KLM-367. They are the same. > > > > Don B. > > > > > > > > _____ > > > > From: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com] On Behalf Of > > Peter Mörck > > Sent: Monday, July 23, 2012 8:25 PM > > To: PolySix@yahoogroups.com > > Subject: Re: [PolySix] Re: Polysix contact strip > > > > > > > > > > > > You must be looking at the board layout drawing. > > The schematics are different and have no "layers". They just show how it's > > connected without actual physical constraints. > > > > Anyway, I just looked and pins 1,4,10,13,14 of IC31 are tied to +5V :) > > > > By the way, > > I assume there's an error in the schematics indicating pin 4 tied to pin12 > > of the 8048, as it's also tied to +5V. > > Either that's pin 5 instead, or vice versa. > > > > IC31 is just a quad AND gate acting as a buffer. Each of the AND gates has > > one of its inputs tied to +5V so whatever appeard on the other input will > > also appear on the output of that gate. > > > > The traces under IC31 are usually attacked by the battery acid though and it > > is good if you do continuity testing around that area. > > > > BR, > > Peter > > > > ----- Original Message ----- > > From: tonezone020 > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > > Sent: Tuesday, July 24, 2012 1:45 AM > > Subject: [PolySix] Re: Polysix contact strip > > > > Hi, > > > > Looking at the schematics it's hard to tell - it doesn't seem like there is > > one for the underside of the board ... > > > > Regards, > > > > Tony > > > > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> , Peter > > Mörck <peterm@> wrote: > > > > > > Just compare with the schematics? > > > > > > BR, > > > Peter > > > > > > ----- Original Message ----- > > > From: tonezone020 > > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > > > Sent: Tuesday, July 24, 2012 12:52 AM > > > Subject: [PolySix] Re: Polysix contact strip > > > > > > > > > > > > Hi, > > > > > > Thanks for your message. > > > > > > I managed to sort the strips out - they had stretched, but with a bit of > > coaxing the keys are now working. > > > > > > Been slowly trying to fix the battery leak problem with a tiny bit of > > success and Old Crow's advice from his site. > > > > > > I discovered pin numbers 13 and 14 on IC31 are connected. Do you know if > > this should be so? There seems to be a copper trace on the underneath > > circuitry. It also appears to be the same for IC30... > > > > > > Thanks, > > > > > > Tony > > > > > > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> , > > bastebraak <bastebraak@> wrote: > > > > > > > > > > > > > > > > Is the old one damaged or just not working well. I fixed the contacts on > > my polysix with a paste i ordered online. > > > > > > > > > > > > Verzonden vanaf Samsung Mobiletonezone020 <swamp.gigs@> schreef: > > > > Hi All, > > > > > > > > Does anyone know where I can get a couple of 6 bubble contact strips or > > alternatives for my synth, preferably in the Uk ? > > > > > > > > Many thanks in advance, > > > > > > > > Tony > > > > > > > > > > > > > > > > ------------------------------------ > > > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > > > > > > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > > [Non-text portions of this message have been removed] > > > > > > > > > > > > [Non-text portions of this message have been removed] > > >
2012-07-24 by Peter Mörck
Hi, Regarding IC26 pin 5 --> IC34 pin 5: Yes, they should be connected to eachother. But more importantly, do any of them have contact with pin 11 of the 8048 (IC22) ? IC26 and IC34 are latches, controlled by pin 11 of the 8048. The fact that IC26 and IC34 have pins 5 connected to eachother doesn't necessarily mean any of them will work, unless they in turn are connected to the 8048 pin 11. So connection between IC22 pin 11 <--> IC26 pin 5 <--> IC34 pin 5 is what you need. BR, Peter
----- Original Message -----
From: tonezone020
To: PolySix@yahoogroups.com
Sent: Tuesday, July 24, 2012 11:59 AM
Subject: [PolySix] Re: Polysix contact strip
Erm,
Correction - that should be IC24 p2, 1, 11, 10 that is connected to IC32 p2, 1, 17, 16
Cheers,
Tony
--- In PolySix@yahoogroups.com, "tonezone020" <swamp.gigs@...> wrote:
>
> Hi Don and Peter,
>
> Your messages have been very helpful consequently I've discovered anomalies elsewhere...
>
> IC26 p5 doesn't connect to IC34 p5 - should I bridge this ?
>
> IC26 to IC32 connections are all fine.
>
> Also I think there's a mistake in the schematics. Rather than IC34 connecting to IC32 it seems to be IC26 p2, 1, 11, 10 that is connected to IC32 p2, 1, 17, 16
>
> Regards,
>
> Tony
>
>
> --- In PolySix@yahoogroups.com, "backshall1" <backshall1@> wrote:
> >
> > Yes, there is an error in the schematics. Pin 5 is +5v, not pin 4. Pin 4
> > really does go to pin 12 on the 8048. I just checked a clone board and an
> > old original KLM-367. They are the same.
> >
> > Don B.
> >
> >
> >
> > _____
> >
> > From: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com] On Behalf Of
> > Peter Mörck
> > Sent: Monday, July 23, 2012 8:25 PM
> > To: PolySix@yahoogroups.com
> > Subject: Re: [PolySix] Re: Polysix contact strip
> >
> >
> >
> >
> >
> > You must be looking at the board layout drawing.
> > The schematics are different and have no "layers". They just show how it's
> > connected without actual physical constraints.
> >
> > Anyway, I just looked and pins 1,4,10,13,14 of IC31 are tied to +5V :)
> >
> > By the way,
> > I assume there's an error in the schematics indicating pin 4 tied to pin12
> > of the 8048, as it's also tied to +5V.
> > Either that's pin 5 instead, or vice versa.
> >
> > IC31 is just a quad AND gate acting as a buffer. Each of the AND gates has
> > one of its inputs tied to +5V so whatever appeard on the other input will
> > also appear on the output of that gate.
> >
> > The traces under IC31 are usually attacked by the battery acid though and it
> > is good if you do continuity testing around that area.
> >
> > BR,
> > Peter
> >
> > ----- Original Message -----
> > From: tonezone020
> > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com>
> > Sent: Tuesday, July 24, 2012 1:45 AM
> > Subject: [PolySix] Re: Polysix contact strip
> >
> > Hi,
> >
> > Looking at the schematics it's hard to tell - it doesn't seem like there is
> > one for the underside of the board ...
> >
> > Regards,
> >
> > Tony
> >
> > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> , Peter
> > Mörck <peterm@> wrote:
> > >
> > > Just compare with the schematics?
> > >
> > > BR,
> > > Peter
> > >
> > > ----- Original Message -----
> > > From: tonezone020
> > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com>
> > > Sent: Tuesday, July 24, 2012 12:52 AM
> > > Subject: [PolySix] Re: Polysix contact strip
> > >
> > >
> > >
> > > Hi,
> > >
> > > Thanks for your message.
> > >
> > > I managed to sort the strips out - they had stretched, but with a bit of
> > coaxing the keys are now working.
> > >
> > > Been slowly trying to fix the battery leak problem with a tiny bit of
> > success and Old Crow's advice from his site.
> > >
> > > I discovered pin numbers 13 and 14 on IC31 are connected. Do you know if
> > this should be so? There seems to be a copper trace on the underneath
> > circuitry. It also appears to be the same for IC30...
> > >
> > > Thanks,
> > >
> > > Tony
> > >
> > > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> ,
> > bastebraak <bastebraak@> wrote:
> > > >
> > > >
> > > >
> > > > Is the old one damaged or just not working well. I fixed the contacts on
> > my polysix with a paste i ordered online.
> > > >
> > > >
> > > > Verzonden vanaf Samsung Mobiletonezone020 <swamp.gigs@> schreef:
> > > > Hi All,
> > > >
> > > > Does anyone know where I can get a couple of 6 bubble contact strips or
> > alternatives for my synth, preferably in the Uk ?
> > > >
> > > > Many thanks in advance,
> > > >
> > > > Tony
> > > >
> > > >
> > > >
> > > > ------------------------------------
> > > >
> > > > Yahoo! Groups Links
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > [Non-text portions of this message have been removed]
> > > >
> > >
> > >
> > >
> > >
> > >
> > > [Non-text portions of this message have been removed]
> > >
> >
> > [Non-text portions of this message have been removed]
> >
> >
> >
> >
> >
> > [Non-text portions of this message have been removed]
> >
>
[Non-text portions of this message have been removed]2012-07-24 by tonezone020
Hi Peter, I bridged IC26 pin 5 --> IC34 pin 5 and there's continuity to IC22 pin 11 , however doing so knocked out the Bank A thru to Write switches and when the I change patch switches, the sound played doesn't. Any pointers to where to look ? Thanks Tone --- In PolySix@yahoogroups.com, Peter Mörck <peterm@...> wrote:
> > Hi, > > Regarding IC26 pin 5 --> IC34 pin 5: > > Yes, they should be connected to eachother. > But more importantly, do any of them have contact with pin 11 of the 8048 (IC22) ? > IC26 and IC34 are latches, controlled by pin 11 of the 8048. > The fact that IC26 and IC34 have pins 5 connected to eachother doesn't necessarily mean any of them will work, unless they in turn are connected to the 8048 pin 11. > So connection between IC22 pin 11 <--> IC26 pin 5 <--> IC34 pin 5 is what you need. > > BR, > Peter > > > > ----- Original Message ----- > From: tonezone020 > To: PolySix@yahoogroups.com > Sent: Tuesday, July 24, 2012 11:59 AM > Subject: [PolySix] Re: Polysix contact strip > > > > Erm, > > Correction - that should be IC24 p2, 1, 11, 10 that is connected to IC32 p2, 1, 17, 16 > > Cheers, > > Tony > > --- In PolySix@yahoogroups.com, "tonezone020" <swamp.gigs@> wrote: > > > > Hi Don and Peter, > > > > Your messages have been very helpful consequently I've discovered anomalies elsewhere... > > > > IC26 p5 doesn't connect to IC34 p5 - should I bridge this ? > > > > IC26 to IC32 connections are all fine. > > > > Also I think there's a mistake in the schematics. Rather than IC34 connecting to IC32 it seems to be IC26 p2, 1, 11, 10 that is connected to IC32 p2, 1, 17, 16 > > > > Regards, > > > > Tony > > > > > > --- In PolySix@yahoogroups.com, "backshall1" <backshall1@> wrote: > > > > > > Yes, there is an error in the schematics. Pin 5 is +5v, not pin 4. Pin 4 > > > really does go to pin 12 on the 8048. I just checked a clone board and an > > > old original KLM-367. They are the same. > > > > > > Don B. > > > > > > > > > > > > _____ > > > > > > From: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com] On Behalf Of > > > Peter Mörck > > > Sent: Monday, July 23, 2012 8:25 PM > > > To: PolySix@yahoogroups.com > > > Subject: Re: [PolySix] Re: Polysix contact strip > > > > > > > > > > > > > > > > > > You must be looking at the board layout drawing. > > > The schematics are different and have no "layers". They just show how it's > > > connected without actual physical constraints. > > > > > > Anyway, I just looked and pins 1,4,10,13,14 of IC31 are tied to +5V :) > > > > > > By the way, > > > I assume there's an error in the schematics indicating pin 4 tied to pin12 > > > of the 8048, as it's also tied to +5V. > > > Either that's pin 5 instead, or vice versa. > > > > > > IC31 is just a quad AND gate acting as a buffer. Each of the AND gates has > > > one of its inputs tied to +5V so whatever appeard on the other input will > > > also appear on the output of that gate. > > > > > > The traces under IC31 are usually attacked by the battery acid though and it > > > is good if you do continuity testing around that area. > > > > > > BR, > > > Peter > > > > > > ----- Original Message ----- > > > From: tonezone020 > > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > > > Sent: Tuesday, July 24, 2012 1:45 AM > > > Subject: [PolySix] Re: Polysix contact strip > > > > > > Hi, > > > > > > Looking at the schematics it's hard to tell - it doesn't seem like there is > > > one for the underside of the board ... > > > > > > Regards, > > > > > > Tony > > > > > > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> , Peter > > > Mörck <peterm@> wrote: > > > > > > > > Just compare with the schematics? > > > > > > > > BR, > > > > Peter > > > > > > > > ----- Original Message ----- > > > > From: tonezone020 > > > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > > > > Sent: Tuesday, July 24, 2012 12:52 AM > > > > Subject: [PolySix] Re: Polysix contact strip > > > > > > > > > > > > > > > > Hi, > > > > > > > > Thanks for your message. > > > > > > > > I managed to sort the strips out - they had stretched, but with a bit of > > > coaxing the keys are now working. > > > > > > > > Been slowly trying to fix the battery leak problem with a tiny bit of > > > success and Old Crow's advice from his site. > > > > > > > > I discovered pin numbers 13 and 14 on IC31 are connected. Do you know if > > > this should be so? There seems to be a copper trace on the underneath > > > circuitry. It also appears to be the same for IC30... > > > > > > > > Thanks, > > > > > > > > Tony > > > > > > > > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> , > > > bastebraak <bastebraak@> wrote: > > > > > > > > > > > > > > > > > > > > Is the old one damaged or just not working well. I fixed the contacts on > > > my polysix with a paste i ordered online. > > > > > > > > > > > > > > > Verzonden vanaf Samsung Mobiletonezone020 <swamp.gigs@> schreef: > > > > > Hi All, > > > > > > > > > > Does anyone know where I can get a couple of 6 bubble contact strips or > > > alternatives for my synth, preferably in the Uk ? > > > > > > > > > > Many thanks in advance, > > > > > > > > > > Tony > > > > > > > > > > > > > > > > > > > > ------------------------------------ > > > > > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > > > > > > > > > > > > > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > > > > > > [Non-text portions of this message have been removed] >
2012-07-24 by tonezone020
Hi again, Should IC31 and IC30 pins 7 be connected to each other ? Also, should pin 1 from both run to ground ? As you can tell, I'm a complete novice trying to make sure about reading the schematics ! I'm in the UK by the way. Where are you ? Regards, Tony --- In PolySix@yahoogroups.com, "tonezone020" <swamp.gigs@...> wrote:
> > Hi Peter, > > I bridged IC26 pin 5 --> IC34 pin 5 and there's continuity to IC22 pin 11 , however doing so knocked out the Bank A thru to Write switches and when the I change patch switches, the sound played doesn't. > > Any pointers to where to look ? > > Thanks > > Tone > > > --- In PolySix@yahoogroups.com, Peter Mörck <peterm@> wrote: > > > > Hi, > > > > Regarding IC26 pin 5 --> IC34 pin 5: > > > > Yes, they should be connected to eachother. > > But more importantly, do any of them have contact with pin 11 of the 8048 (IC22) ? > > IC26 and IC34 are latches, controlled by pin 11 of the 8048. > > The fact that IC26 and IC34 have pins 5 connected to eachother doesn't necessarily mean any of them will work, unless they in turn are connected to the 8048 pin 11. > > So connection between IC22 pin 11 <--> IC26 pin 5 <--> IC34 pin 5 is what you need. > > > > BR, > > Peter > > > > > > > > ----- Original Message ----- > > From: tonezone020 > > To: PolySix@yahoogroups.com > > Sent: Tuesday, July 24, 2012 11:59 AM > > Subject: [PolySix] Re: Polysix contact strip > > > > > > > > Erm, > > > > Correction - that should be IC24 p2, 1, 11, 10 that is connected to IC32 p2, 1, 17, 16 > > > > Cheers, > > > > Tony > > > > --- In PolySix@yahoogroups.com, "tonezone020" <swamp.gigs@> wrote: > > > > > > Hi Don and Peter, > > > > > > Your messages have been very helpful consequently I've discovered anomalies elsewhere... > > > > > > IC26 p5 doesn't connect to IC34 p5 - should I bridge this ? > > > > > > IC26 to IC32 connections are all fine. > > > > > > Also I think there's a mistake in the schematics. Rather than IC34 connecting to IC32 it seems to be IC26 p2, 1, 11, 10 that is connected to IC32 p2, 1, 17, 16 > > > > > > Regards, > > > > > > Tony > > > > > > > > > --- In PolySix@yahoogroups.com, "backshall1" <backshall1@> wrote: > > > > > > > > Yes, there is an error in the schematics. Pin 5 is +5v, not pin 4. Pin 4 > > > > really does go to pin 12 on the 8048. I just checked a clone board and an > > > > old original KLM-367. They are the same. > > > > > > > > Don B. > > > > > > > > > > > > > > > > _____ > > > > > > > > From: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com] On Behalf Of > > > > Peter Mörck > > > > Sent: Monday, July 23, 2012 8:25 PM > > > > To: PolySix@yahoogroups.com > > > > Subject: Re: [PolySix] Re: Polysix contact strip > > > > > > > > > > > > > > > > > > > > > > > > You must be looking at the board layout drawing. > > > > The schematics are different and have no "layers". They just show how it's > > > > connected without actual physical constraints. > > > > > > > > Anyway, I just looked and pins 1,4,10,13,14 of IC31 are tied to +5V :) > > > > > > > > By the way, > > > > I assume there's an error in the schematics indicating pin 4 tied to pin12 > > > > of the 8048, as it's also tied to +5V. > > > > Either that's pin 5 instead, or vice versa. > > > > > > > > IC31 is just a quad AND gate acting as a buffer. Each of the AND gates has > > > > one of its inputs tied to +5V so whatever appeard on the other input will > > > > also appear on the output of that gate. > > > > > > > > The traces under IC31 are usually attacked by the battery acid though and it > > > > is good if you do continuity testing around that area. > > > > > > > > BR, > > > > Peter > > > > > > > > ----- Original Message ----- > > > > From: tonezone020 > > > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > > > > Sent: Tuesday, July 24, 2012 1:45 AM > > > > Subject: [PolySix] Re: Polysix contact strip > > > > > > > > Hi, > > > > > > > > Looking at the schematics it's hard to tell - it doesn't seem like there is > > > > one for the underside of the board ... > > > > > > > > Regards, > > > > > > > > Tony > > > > > > > > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> , Peter > > > > Mörck <peterm@> wrote: > > > > > > > > > > Just compare with the schematics? > > > > > > > > > > BR, > > > > > Peter > > > > > > > > > > ----- Original Message ----- > > > > > From: tonezone020 > > > > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > > > > > Sent: Tuesday, July 24, 2012 12:52 AM > > > > > Subject: [PolySix] Re: Polysix contact strip > > > > > > > > > > > > > > > > > > > > Hi, > > > > > > > > > > Thanks for your message. > > > > > > > > > > I managed to sort the strips out - they had stretched, but with a bit of > > > > coaxing the keys are now working. > > > > > > > > > > Been slowly trying to fix the battery leak problem with a tiny bit of > > > > success and Old Crow's advice from his site. > > > > > > > > > > I discovered pin numbers 13 and 14 on IC31 are connected. Do you know if > > > > this should be so? There seems to be a copper trace on the underneath > > > > circuitry. It also appears to be the same for IC30... > > > > > > > > > > Thanks, > > > > > > > > > > Tony > > > > > > > > > > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> , > > > > bastebraak <bastebraak@> wrote: > > > > > > > > > > > > > > > > > > > > > > > > Is the old one damaged or just not working well. I fixed the contacts on > > > > my polysix with a paste i ordered online. > > > > > > > > > > > > > > > > > > Verzonden vanaf Samsung Mobiletonezone020 <swamp.gigs@> schreef: > > > > > > Hi All, > > > > > > > > > > > > Does anyone know where I can get a couple of 6 bubble contact strips or > > > > alternatives for my synth, preferably in the Uk ? > > > > > > > > > > > > Many thanks in advance, > > > > > > > > > > > > Tony > > > > > > > > > > > > > > > > > > > > > > > > ------------------------------------ > > > > > > > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > > > > > > > > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > > > > > > > > > > > > > > [Non-text portions of this message have been removed] > > >
2012-07-24 by Jed Jorgensen
Pin 7 of each of those goes to ground. Pin 1 of each of those goes to the +5v rail. jed On Tue, Jul 24, 2012 at 12:42 PM, tonezone020 <swamp.gigs@googlemail.com>wrote: > ** > > > Hi again, > > Should IC31 and IC30 pins 7 be connected to each other ? Also, should pin > 1 from both run to ground ? > > As you can tell, I'm a complete novice trying to make sure about reading > the schematics ! > > I'm in the UK by the way. Where are you ? > > Regards, > > Tony > > > --- In PolySix@yahoogroups.com, "tonezone020" <swamp.gigs@...> wrote: > > > > Hi Peter, > > > > I bridged IC26 pin 5 --> IC34 pin 5 and there's continuity to IC22 pin > 11 , however doing so knocked out the Bank A thru to Write switches and > when the I change patch switches, the sound played doesn't. > > > > Any pointers to where to look ? > > > > Thanks > > > > Tone > > > > > > --- In PolySix@yahoogroups.com, Peter M�rck <peterm@> wrote: > > > > > > Hi, > > > > > > Regarding IC26 pin 5 --> IC34 pin 5: > > > > > > Yes, they should be connected to eachother. > > > But more importantly, do any of them have contact with pin 11 of the > 8048 (IC22) ? > > > IC26 and IC34 are latches, controlled by pin 11 of the 8048. > > > The fact that IC26 and IC34 have pins 5 connected to eachother doesn't > necessarily mean any of them will work, unless they in turn are connected > to the 8048 pin 11. > > > So connection between IC22 pin 11 <--> IC26 pin 5 <--> IC34 pin 5 is > what you need. > > > > > > BR, > > > Peter > > > > > > > > > > > > ----- Original Message ----- > > > From: tonezone020 > > > To: PolySix@yahoogroups.com > > > Sent: Tuesday, July 24, 2012 11:59 AM > > > Subject: [PolySix] Re: Polysix contact strip > > > > > > > > > > > > Erm, > > > > > > Correction - that should be IC24 p2, 1, 11, 10 that is connected to > IC32 p2, 1, 17, 16 > > > > > > Cheers, > > > > > > Tony > > > > > > --- In PolySix@yahoogroups.com, "tonezone020" <swamp.gigs@> wrote: > > > > > > > > Hi Don and Peter, > > > > > > > > Your messages have been very helpful consequently I've discovered > anomalies elsewhere... > > > > > > > > IC26 p5 doesn't connect to IC34 p5 - should I bridge this ? > > > > > > > > IC26 to IC32 connections are all fine. > > > > > > > > Also I think there's a mistake in the schematics. Rather than IC34 > connecting to IC32 it seems to be IC26 p2, 1, 11, 10 that is connected to > IC32 p2, 1, 17, 16 > > > > > > > > Regards, > > > > > > > > Tony > > > > > > > > > > > > --- In PolySix@yahoogroups.com, "backshall1" <backshall1@> wrote: > > > > > > > > > > Yes, there is an error in the schematics. Pin 5 is +5v, not pin 4. > Pin 4 > > > > > really does go to pin 12 on the 8048. I just checked a clone board > and an > > > > > old original KLM-367. They are the same. > > > > > > > > > > Don B. > > > > > > > > > > > > > > > > > > > > _____ > > > > > > > > > > From: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com] On > Behalf Of > > > > > Peter M�rck > > > > > Sent: Monday, July 23, 2012 8:25 PM > > > > > To: PolySix@yahoogroups.com > > > > > Subject: Re: [PolySix] Re: Polysix contact strip > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > You must be looking at the board layout drawing. > > > > > The schematics are different and have no "layers". They just show > how it's > > > > > connected without actual physical constraints. > > > > > > > > > > Anyway, I just looked and pins 1,4,10,13,14 of IC31 are tied to > +5V :) > > > > > > > > > > By the way, > > > > > I assume there's an error in the schematics indicating pin 4 tied > to pin12 > > > > > of the 8048, as it's also tied to +5V. > > > > > Either that's pin 5 instead, or vice versa. > > > > > > > > > > IC31 is just a quad AND gate acting as a buffer. Each of the AND > gates has > > > > > one of its inputs tied to +5V so whatever appeard on the other > input will > > > > > also appear on the output of that gate. > > > > > > > > > > The traces under IC31 are usually attacked by the battery acid > though and it > > > > > is good if you do continuity testing around that area. > > > > > > > > > > BR, > > > > > Peter > > > > > > > > > > ----- Original Message ----- > > > > > From: tonezone020 > > > > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > > > > > Sent: Tuesday, July 24, 2012 1:45 AM > > > > > Subject: [PolySix] Re: Polysix contact strip > > > > > > > > > > Hi, > > > > > > > > > > Looking at the schematics it's hard to tell - it doesn't seem like > there is > > > > > one for the underside of the board ... > > > > > > > > > > Regards, > > > > > > > > > > Tony > > > > > > > > > > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > , Peter > > > > > M�rck <peterm@> wrote: > > > > > > > > > > > > Just compare with the schematics? > > > > > > > > > > > > BR, > > > > > > Peter > > > > > > > > > > > > ----- Original Message ----- > > > > > > From: tonezone020 > > > > > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > > > > > > Sent: Tuesday, July 24, 2012 12:52 AM > > > > > > Subject: [PolySix] Re: Polysix contact strip > > > > > > > > > > > > > > > > > > > > > > > > Hi, > > > > > > > > > > > > Thanks for your message. > > > > > > > > > > > > I managed to sort the strips out - they had stretched, but with > a bit of > > > > > coaxing the keys are now working. > > > > > > > > > > > > Been slowly trying to fix the battery leak problem with a tiny > bit of > > > > > success and Old Crow's advice from his site. > > > > > > > > > > > > I discovered pin numbers 13 and 14 on IC31 are connected. Do you > know if > > > > > this should be so? There seems to be a copper trace on the > underneath > > > > > circuitry. It also appears to be the same for IC30... > > > > > > > > > > > > Thanks, > > > > > > > > > > > > Tony > > > > > > > > > > > > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > , > > > > > bastebraak <bastebraak@> wrote: > > > > > > > > > > > > > > > > > > > > > > > > > > > > Is the old one damaged or just not working well. I fixed the > contacts on > > > > > my polysix with a paste i ordered online. > > > > > > > > > > > > > > > > > > > > > Verzonden vanaf Samsung Mobiletonezone020 <swamp.gigs@> > schreef: > > > > > > > Hi All, > > > > > > > > > > > > > > Does anyone know where I can get a couple of 6 bubble contact > strips or > > > > > alternatives for my synth, preferably in the Uk ? > > > > > > > > > > > > > > Many thanks in advance, > > > > > > > > > > > > > > Tony > > > > > > > > > > > > > > > > > > > > > > > > > > > > ------------------------------------ > > > > > > > > > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > > > > > > > > > > > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > > > [Non-text portions of this message have been removed]
2012-07-24 by Jed Jorgensen
Is that a typo (34 vs 24)? IC26 pin 5 should go to IC24 pin 5. jed On Tue, Jul 24, 2012 at 12:21 PM, tonezone020 <swamp.gigs@googlemail.com>wrote: > ** > > > Hi Peter, > > I bridged IC26 pin 5 --> IC34 pin 5 and there's continuity to IC22 pin 11 > , however doing so knocked out the Bank A thru to Write switches and when > the I change patch switches, the sound played doesn't. > > Any pointers to where to look ? > > Thanks > > Tone > > > --- In PolySix@yahoogroups.com, Peter M�rck <peterm@...> wrote: > > > > Hi, > > > > Regarding IC26 pin 5 --> IC34 pin 5: > > > > Yes, they should be connected to eachother. > > But more importantly, do any of them have contact with pin 11 of the > 8048 (IC22) ? > > IC26 and IC34 are latches, controlled by pin 11 of the 8048. > > The fact that IC26 and IC34 have pins 5 connected to eachother doesn't > necessarily mean any of them will work, unless they in turn are connected > to the 8048 pin 11. > > So connection between IC22 pin 11 <--> IC26 pin 5 <--> IC34 pin 5 is > what you need. > > > > BR, > > Peter > > > > > > > > ----- Original Message ----- > > From: tonezone020 > > To: PolySix@yahoogroups.com > > Sent: Tuesday, July 24, 2012 11:59 AM > > Subject: [PolySix] Re: Polysix contact strip > > > > > > > > Erm, > > > > Correction - that should be IC24 p2, 1, 11, 10 that is connected to IC32 > p2, 1, 17, 16 > > > > Cheers, > > > > Tony > > > > --- In PolySix@yahoogroups.com, "tonezone020" <swamp.gigs@> wrote: > > > > > > Hi Don and Peter, > > > > > > Your messages have been very helpful consequently I've discovered > anomalies elsewhere... > > > > > > IC26 p5 doesn't connect to IC34 p5 - should I bridge this ? > > > > > > IC26 to IC32 connections are all fine. > > > > > > Also I think there's a mistake in the schematics. Rather than IC34 > connecting to IC32 it seems to be IC26 p2, 1, 11, 10 that is connected to > IC32 p2, 1, 17, 16 > > > > > > Regards, > > > > > > Tony > > > > > > > > > --- In PolySix@yahoogroups.com, "backshall1" <backshall1@> wrote: > > > > > > > > Yes, there is an error in the schematics. Pin 5 is +5v, not pin 4. > Pin 4 > > > > really does go to pin 12 on the 8048. I just checked a clone board > and an > > > > old original KLM-367. They are the same. > > > > > > > > Don B. > > > > > > > > > > > > > > > > _____ > > > > > > > > From: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com] On > Behalf Of > > > > Peter M�rck > > > > Sent: Monday, July 23, 2012 8:25 PM > > > > To: PolySix@yahoogroups.com > > > > Subject: Re: [PolySix] Re: Polysix contact strip > > > > > > > > > > > > > > > > > > > > > > > > You must be looking at the board layout drawing. > > > > The schematics are different and have no "layers". They just show > how it's > > > > connected without actual physical constraints. > > > > > > > > Anyway, I just looked and pins 1,4,10,13,14 of IC31 are tied to +5V > :) > > > > > > > > By the way, > > > > I assume there's an error in the schematics indicating pin 4 tied to > pin12 > > > > of the 8048, as it's also tied to +5V. > > > > Either that's pin 5 instead, or vice versa. > > > > > > > > IC31 is just a quad AND gate acting as a buffer. Each of the AND > gates has > > > > one of its inputs tied to +5V so whatever appeard on the other input > will > > > > also appear on the output of that gate. > > > > > > > > The traces under IC31 are usually attacked by the battery acid > though and it > > > > is good if you do continuity testing around that area. > > > > > > > > BR, > > > > Peter > > > > > > > > ----- Original Message ----- > > > > From: tonezone020 > > > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > > > > Sent: Tuesday, July 24, 2012 1:45 AM > > > > Subject: [PolySix] Re: Polysix contact strip > > > > > > > > Hi, > > > > > > > > Looking at the schematics it's hard to tell - it doesn't seem like > there is > > > > one for the underside of the board ... > > > > > > > > Regards, > > > > > > > > Tony > > > > > > > > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> , > Peter > > > > M�rck <peterm@> wrote: > > > > > > > > > > Just compare with the schematics? > > > > > > > > > > BR, > > > > > Peter > > > > > > > > > > ----- Original Message ----- > > > > > From: tonezone020 > > > > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > > > > > Sent: Tuesday, July 24, 2012 12:52 AM > > > > > Subject: [PolySix] Re: Polysix contact strip > > > > > > > > > > > > > > > > > > > > Hi, > > > > > > > > > > Thanks for your message. > > > > > > > > > > I managed to sort the strips out - they had stretched, but with a > bit of > > > > coaxing the keys are now working. > > > > > > > > > > Been slowly trying to fix the battery leak problem with a tiny bit > of > > > > success and Old Crow's advice from his site. > > > > > > > > > > I discovered pin numbers 13 and 14 on IC31 are connected. Do you > know if > > > > this should be so? There seems to be a copper trace on the underneath > > > > circuitry. It also appears to be the same for IC30... > > > > > > > > > > Thanks, > > > > > > > > > > Tony > > > > > > > > > > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > , > > > > bastebraak <bastebraak@> wrote: > > > > > > > > > > > > > > > > > > > > > > > > Is the old one damaged or just not working well. I fixed the > contacts on > > > > my polysix with a paste i ordered online. > > > > > > > > > > > > > > > > > > Verzonden vanaf Samsung Mobiletonezone020 <swamp.gigs@> schreef: > > > > > > Hi All, > > > > > > > > > > > > Does anyone know where I can get a couple of 6 bubble contact > strips or > > > > alternatives for my synth, preferably in the Uk ? > > > > > > > > > > > > Many thanks in advance, > > > > > > > > > > > > Tony > > > > > > > > > > > > > > > > > > > > > > > > ------------------------------------ > > > > > > > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > > > > > > > > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > > > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > [Non-text portions of this message have been removed]
2012-07-24 by Peter Mörck
You mean it was working before and it got worse? What do you mean by "knocked out"? LEDs are lit/off or button presses don't do anything? Hmm.. I'm wondering if you bridged something (that isn't supposed to be bridged) to +5V or ground. Don't keep it turned on for long if you don't need to in case something got shorted by mistake. I can't say exactly which traces you should check, but the traces around and under IC31 are always good candidates. If you're "lucky", you'll have acid damage in a completely different place, as I've heard of people having damaged traces far from where the battery is, maybe due to the synth having being stored standing sideways or perhaps fumes from the leaking battery have been corrosive. IC31 may itself be damaged but you'd have more consistent problems with almost everything on the synthesizer then I think. Make sure pins 4,14,13,7 of IC34 aren't directly tied to ground or +5VDC (resistance testing between each pin and +5VDC point with power turned off). There should be resistance between the pins and +5VDC due to pull-up resistor array R17 (roughly 10k) What is currently working/not working? Are you sure you're counting the pins on the ICs correctly? Do you have the schematics? BR, Peter
----- Original Message -----
From: tonezone020
To: PolySix@yahoogroups.com
Sent: Tuesday, July 24, 2012 9:21 PM
Subject: [PolySix] Re: Polysix contact strip
Hi Peter,
I bridged IC26 pin 5 --> IC34 pin 5 and there's continuity to IC22 pin 11 , however doing so knocked out the Bank A thru to Write switches and when the I change patch switches, the sound played doesn't.
Any pointers to where to look ?
Thanks
Tone
--- In PolySix@yahoogroups.com, Peter Mörck <peterm@...> wrote:
>
> Hi,
>
> Regarding IC26 pin 5 --> IC34 pin 5:
>
> Yes, they should be connected to eachother.
> But more importantly, do any of them have contact with pin 11 of the 8048 (IC22) ?
> IC26 and IC34 are latches, controlled by pin 11 of the 8048.
> The fact that IC26 and IC34 have pins 5 connected to eachother doesn't necessarily mean any of them will work, unless they in turn are connected to the 8048 pin 11.
> So connection between IC22 pin 11 <--> IC26 pin 5 <--> IC34 pin 5 is what you need.
>
> BR,
> Peter
>
>
>
> ----- Original Message -----
> From: tonezone020
> To: PolySix@yahoogroups.com
> Sent: Tuesday, July 24, 2012 11:59 AM
> Subject: [PolySix] Re: Polysix contact strip
>
>
>
> Erm,
>
> Correction - that should be IC24 p2, 1, 11, 10 that is connected to IC32 p2, 1, 17, 16
>
> Cheers,
>
> Tony
>
> --- In PolySix@yahoogroups.com, "tonezone020" <swamp.gigs@> wrote:
> >
> > Hi Don and Peter,
> >
> > Your messages have been very helpful consequently I've discovered anomalies elsewhere...
> >
> > IC26 p5 doesn't connect to IC34 p5 - should I bridge this ?
> >
> > IC26 to IC32 connections are all fine.
> >
> > Also I think there's a mistake in the schematics. Rather than IC34 connecting to IC32 it seems to be IC26 p2, 1, 11, 10 that is connected to IC32 p2, 1, 17, 16
> >
> > Regards,
> >
> > Tony
> >
> >
> > --- In PolySix@yahoogroups.com, "backshall1" <backshall1@> wrote:
> > >
> > > Yes, there is an error in the schematics. Pin 5 is +5v, not pin 4. Pin 4
> > > really does go to pin 12 on the 8048. I just checked a clone board and an
> > > old original KLM-367. They are the same.
> > >
> > > Don B.
> > >
> > >
> > >
> > > _____
> > >
> > > From: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com] On Behalf Of
> > > Peter Mörck
> > > Sent: Monday, July 23, 2012 8:25 PM
> > > To: PolySix@yahoogroups.com
> > > Subject: Re: [PolySix] Re: Polysix contact strip
> > >
> > >
> > >
> > >
> > >
> > > You must be looking at the board layout drawing.
> > > The schematics are different and have no "layers". They just show how it's
> > > connected without actual physical constraints.
> > >
> > > Anyway, I just looked and pins 1,4,10,13,14 of IC31 are tied to +5V :)
> > >
> > > By the way,
> > > I assume there's an error in the schematics indicating pin 4 tied to pin12
> > > of the 8048, as it's also tied to +5V.
> > > Either that's pin 5 instead, or vice versa.
> > >
> > > IC31 is just a quad AND gate acting as a buffer. Each of the AND gates has
> > > one of its inputs tied to +5V so whatever appeard on the other input will
> > > also appear on the output of that gate.
> > >
> > > The traces under IC31 are usually attacked by the battery acid though and it
> > > is good if you do continuity testing around that area.
> > >
> > > BR,
> > > Peter
> > >
> > > ----- Original Message -----
> > > From: tonezone020
> > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com>
> > > Sent: Tuesday, July 24, 2012 1:45 AM
> > > Subject: [PolySix] Re: Polysix contact strip
> > >
> > > Hi,
> > >
> > > Looking at the schematics it's hard to tell - it doesn't seem like there is
> > > one for the underside of the board ...
> > >
> > > Regards,
> > >
> > > Tony
> > >
> > > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> , Peter
> > > Mörck <peterm@> wrote:
> > > >
> > > > Just compare with the schematics?
> > > >
> > > > BR,
> > > > Peter
> > > >
> > > > ----- Original Message -----
> > > > From: tonezone020
> > > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com>
> > > > Sent: Tuesday, July 24, 2012 12:52 AM
> > > > Subject: [PolySix] Re: Polysix contact strip
> > > >
> > > >
> > > >
> > > > Hi,
> > > >
> > > > Thanks for your message.
> > > >
> > > > I managed to sort the strips out - they had stretched, but with a bit of
> > > coaxing the keys are now working.
> > > >
> > > > Been slowly trying to fix the battery leak problem with a tiny bit of
> > > success and Old Crow's advice from his site.
> > > >
> > > > I discovered pin numbers 13 and 14 on IC31 are connected. Do you know if
> > > this should be so? There seems to be a copper trace on the underneath
> > > circuitry. It also appears to be the same for IC30...
> > > >
> > > > Thanks,
> > > >
> > > > Tony
> > > >
> > > > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> ,
> > > bastebraak <bastebraak@> wrote:
> > > > >
> > > > >
> > > > >
> > > > > Is the old one damaged or just not working well. I fixed the contacts on
> > > my polysix with a paste i ordered online.
> > > > >
> > > > >
> > > > > Verzonden vanaf Samsung Mobiletonezone020 <swamp.gigs@> schreef:
> > > > > Hi All,
> > > > >
> > > > > Does anyone know where I can get a couple of 6 bubble contact strips or
> > > alternatives for my synth, preferably in the Uk ?
> > > > >
> > > > > Many thanks in advance,
> > > > >
> > > > > Tony
> > > > >
> > > > >
> > > > >
> > > > > ------------------------------------
> > > > >
> > > > > Yahoo! Groups Links
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > [Non-text portions of this message have been removed]
> > > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > [Non-text portions of this message have been removed]
> > > >
> > >
> > > [Non-text portions of this message have been removed]
> > >
> > >
> > >
> > >
> > >
> > > [Non-text portions of this message have been removed]
> > >
> >
>
>
>
>
>
> [Non-text portions of this message have been removed]
>
[Non-text portions of this message have been removed]2012-07-24 by Peter Mörck
If you look at the datasheet for the 7408 you will see that pin 7 is the GND pin and thus should always be connected to ground. In practice, this means pins 7 of ICs 30 and 31 are connected, yes, but only because they're both connected to ground. Note: I guess the schematics are wrong again as they've marked pin 1 of IC30 as being grounded, while pin 1 is connected between IC31-30, and pin 1 is connected to +5V on IC31 = shortcircuit between +5VDC and GND :/ So that's another error in the schematics. If you're really a novice, I would suggest handing your unit over to someone with a bit more knowledge as you can easily make things worse by using this synth as a learning testbed :) No offense, but if you don't know your way around schematics and logic circuits, please let someone else look at it. Oh, and I'm in Sweden. Greetings :) BR, Peter
----- Original Message -----
From: tonezone020
To: PolySix@yahoogroups.com
Sent: Tuesday, July 24, 2012 9:42 PM
Subject: [PolySix] Re: Polysix contact strip
Hi again,
Should IC31 and IC30 pins 7 be connected to each other ? Also, should pin 1 from both run to ground ?
As you can tell, I'm a complete novice trying to make sure about reading the schematics !
I'm in the UK by the way. Where are you ?
Regards,
Tony
--- In PolySix@yahoogroups.com, "tonezone020" <swamp.gigs@...> wrote:
>
> Hi Peter,
>
> I bridged IC26 pin 5 --> IC34 pin 5 and there's continuity to IC22 pin 11 , however doing so knocked out the Bank A thru to Write switches and when the I change patch switches, the sound played doesn't.
>
> Any pointers to where to look ?
>
> Thanks
>
> Tone
>
>
> --- In PolySix@yahoogroups.com, Peter Mörck <peterm@> wrote:
> >
> > Hi,
> >
> > Regarding IC26 pin 5 --> IC34 pin 5:
> >
> > Yes, they should be connected to eachother.
> > But more importantly, do any of them have contact with pin 11 of the 8048 (IC22) ?
> > IC26 and IC34 are latches, controlled by pin 11 of the 8048.
> > The fact that IC26 and IC34 have pins 5 connected to eachother doesn't necessarily mean any of them will work, unless they in turn are connected to the 8048 pin 11.
> > So connection between IC22 pin 11 <--> IC26 pin 5 <--> IC34 pin 5 is what you need.
> >
> > BR,
> > Peter
> >
> >
> >
> > ----- Original Message -----
> > From: tonezone020
> > To: PolySix@yahoogroups.com
> > Sent: Tuesday, July 24, 2012 11:59 AM
> > Subject: [PolySix] Re: Polysix contact strip
> >
> >
> >
> > Erm,
> >
> > Correction - that should be IC24 p2, 1, 11, 10 that is connected to IC32 p2, 1, 17, 16
> >
> > Cheers,
> >
> > Tony
> >
> > --- In PolySix@yahoogroups.com, "tonezone020" <swamp.gigs@> wrote:
> > >
> > > Hi Don and Peter,
> > >
> > > Your messages have been very helpful consequently I've discovered anomalies elsewhere...
> > >
> > > IC26 p5 doesn't connect to IC34 p5 - should I bridge this ?
> > >
> > > IC26 to IC32 connections are all fine.
> > >
> > > Also I think there's a mistake in the schematics. Rather than IC34 connecting to IC32 it seems to be IC26 p2, 1, 11, 10 that is connected to IC32 p2, 1, 17, 16
> > >
> > > Regards,
> > >
> > > Tony
> > >
> > >
> > > --- In PolySix@yahoogroups.com, "backshall1" <backshall1@> wrote:
> > > >
> > > > Yes, there is an error in the schematics. Pin 5 is +5v, not pin 4. Pin 4
> > > > really does go to pin 12 on the 8048. I just checked a clone board and an
> > > > old original KLM-367. They are the same.
> > > >
> > > > Don B.
> > > >
> > > >
> > > >
> > > > _____
> > > >
> > > > From: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com] On Behalf Of
> > > > Peter Mörck
> > > > Sent: Monday, July 23, 2012 8:25 PM
> > > > To: PolySix@yahoogroups.com
> > > > Subject: Re: [PolySix] Re: Polysix contact strip
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > You must be looking at the board layout drawing.
> > > > The schematics are different and have no "layers". They just show how it's
> > > > connected without actual physical constraints.
> > > >
> > > > Anyway, I just looked and pins 1,4,10,13,14 of IC31 are tied to +5V :)
> > > >
> > > > By the way,
> > > > I assume there's an error in the schematics indicating pin 4 tied to pin12
> > > > of the 8048, as it's also tied to +5V.
> > > > Either that's pin 5 instead, or vice versa.
> > > >
> > > > IC31 is just a quad AND gate acting as a buffer. Each of the AND gates has
> > > > one of its inputs tied to +5V so whatever appeard on the other input will
> > > > also appear on the output of that gate.
> > > >
> > > > The traces under IC31 are usually attacked by the battery acid though and it
> > > > is good if you do continuity testing around that area.
> > > >
> > > > BR,
> > > > Peter
> > > >
> > > > ----- Original Message -----
> > > > From: tonezone020
> > > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com>
> > > > Sent: Tuesday, July 24, 2012 1:45 AM
> > > > Subject: [PolySix] Re: Polysix contact strip
> > > >
> > > > Hi,
> > > >
> > > > Looking at the schematics it's hard to tell - it doesn't seem like there is
> > > > one for the underside of the board ...
> > > >
> > > > Regards,
> > > >
> > > > Tony
> > > >
> > > > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> , Peter
> > > > Mörck <peterm@> wrote:
> > > > >
> > > > > Just compare with the schematics?
> > > > >
> > > > > BR,
> > > > > Peter
> > > > >
> > > > > ----- Original Message -----
> > > > > From: tonezone020
> > > > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com>
> > > > > Sent: Tuesday, July 24, 2012 12:52 AM
> > > > > Subject: [PolySix] Re: Polysix contact strip
> > > > >
> > > > >
> > > > >
> > > > > Hi,
> > > > >
> > > > > Thanks for your message.
> > > > >
> > > > > I managed to sort the strips out - they had stretched, but with a bit of
> > > > coaxing the keys are now working.
> > > > >
> > > > > Been slowly trying to fix the battery leak problem with a tiny bit of
> > > > success and Old Crow's advice from his site.
> > > > >
> > > > > I discovered pin numbers 13 and 14 on IC31 are connected. Do you know if
> > > > this should be so? There seems to be a copper trace on the underneath
> > > > circuitry. It also appears to be the same for IC30...
> > > > >
> > > > > Thanks,
> > > > >
> > > > > Tony
> > > > >
> > > > > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> ,
> > > > bastebraak <bastebraak@> wrote:
> > > > > >
> > > > > >
> > > > > >
> > > > > > Is the old one damaged or just not working well. I fixed the contacts on
> > > > my polysix with a paste i ordered online.
> > > > > >
> > > > > >
> > > > > > Verzonden vanaf Samsung Mobiletonezone020 <swamp.gigs@> schreef:
> > > > > > Hi All,
> > > > > >
> > > > > > Does anyone know where I can get a couple of 6 bubble contact strips or
> > > > alternatives for my synth, preferably in the Uk ?
> > > > > >
> > > > > > Many thanks in advance,
> > > > > >
> > > > > > Tony
> > > > > >
> > > > > >
> > > > > >
> > > > > > ------------------------------------
> > > > > >
> > > > > > Yahoo! Groups Links
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > > [Non-text portions of this message have been removed]
> > > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > [Non-text portions of this message have been removed]
> > > > >
> > > >
> > > > [Non-text portions of this message have been removed]
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > [Non-text portions of this message have been removed]
> > > >
> > >
> >
> >
> >
> >
> >
> > [Non-text portions of this message have been removed]
> >
>
[Non-text portions of this message have been removed]2012-07-24 by Peter Mörck
Damnit! The 14042 below IC26 in the schematics is marked IC34, but I see now there's another IC34 down in the lower right. Ok, add another typo and give it credit for some more confusion...
----- Original Message ----- From: "Jed Jorgensen" <jed.jorgensen@gmail.com> To: <PolySix@yahoogroups.com> Sent: Tuesday, July 24, 2012 9:55 PM Subject: Re: [PolySix] Re: Polysix contact strip Is that a typo (34 vs 24)? IC26 pin 5 should go to IC24 pin 5. jed On Tue, Jul 24, 2012 at 12:21 PM, tonezone020 <swamp.gigs@googlemail.com>wrote: > ** > > > Hi Peter, > > I bridged IC26 pin 5 --> IC34 pin 5 and there's continuity to IC22 pin 11 > , however doing so knocked out the Bank A thru to Write switches and when > the I change patch switches, the sound played doesn't. > > Any pointers to where to look ? > > Thanks > > Tone > > > --- In PolySix@yahoogroups.com, Peter M\ufffdrck <peterm@...> wrote: > > > > Hi, > > > > Regarding IC26 pin 5 --> IC34 pin 5: > > > > Yes, they should be connected to eachother. > > But more importantly, do any of them have contact with pin 11 of the > 8048 (IC22) ? > > IC26 and IC34 are latches, controlled by pin 11 of the 8048. > > The fact that IC26 and IC34 have pins 5 connected to eachother doesn't > necessarily mean any of them will work, unless they in turn are connected > to the 8048 pin 11. > > So connection between IC22 pin 11 <--> IC26 pin 5 <--> IC34 pin 5 is > what you need. > > > > BR, > > Peter > > > > > > > > ----- Original Message ----- > > From: tonezone020 > > To: PolySix@yahoogroups.com > > Sent: Tuesday, July 24, 2012 11:59 AM > > Subject: [PolySix] Re: Polysix contact strip > > > > > > > > Erm, > > > > Correction - that should be IC24 p2, 1, 11, 10 that is connected to IC32 > p2, 1, 17, 16 > > > > Cheers, > > > > Tony > > > > --- In PolySix@yahoogroups.com, "tonezone020" <swamp.gigs@> wrote: > > > > > > Hi Don and Peter, > > > > > > Your messages have been very helpful consequently I've discovered > anomalies elsewhere... > > > > > > IC26 p5 doesn't connect to IC34 p5 - should I bridge this ? > > > > > > IC26 to IC32 connections are all fine. > > > > > > Also I think there's a mistake in the schematics. Rather than IC34 > connecting to IC32 it seems to be IC26 p2, 1, 11, 10 that is connected to > IC32 p2, 1, 17, 16 > > > > > > Regards, > > > > > > Tony > > > > > > > > > --- In PolySix@yahoogroups.com, "backshall1" <backshall1@> wrote: > > > > > > > > Yes, there is an error in the schematics. Pin 5 is +5v, not pin 4. > Pin 4 > > > > really does go to pin 12 on the 8048. I just checked a clone board > and an > > > > old original KLM-367. They are the same. > > > > > > > > Don B. > > > > > > > > > > > > > > > > _____ > > > > > > > > From: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com] On > Behalf Of > > > > Peter M\ufffdrck > > > > Sent: Monday, July 23, 2012 8:25 PM > > > > To: PolySix@yahoogroups.com > > > > Subject: Re: [PolySix] Re: Polysix contact strip > > > > > > > > > > > > > > > > > > > > > > > > You must be looking at the board layout drawing. > > > > The schematics are different and have no "layers". They just show > how it's > > > > connected without actual physical constraints. > > > > > > > > Anyway, I just looked and pins 1,4,10,13,14 of IC31 are tied to +5V > :) > > > > > > > > By the way, > > > > I assume there's an error in the schematics indicating pin 4 tied to > pin12 > > > > of the 8048, as it's also tied to +5V. > > > > Either that's pin 5 instead, or vice versa. > > > > > > > > IC31 is just a quad AND gate acting as a buffer. Each of the AND > gates has > > > > one of its inputs tied to +5V so whatever appeard on the other input > will > > > > also appear on the output of that gate. > > > > > > > > The traces under IC31 are usually attacked by the battery acid > though and it > > > > is good if you do continuity testing around that area. > > > > > > > > BR, > > > > Peter > > > > > > > > ----- Original Message ----- > > > > From: tonezone020 > > > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > > > > Sent: Tuesday, July 24, 2012 1:45 AM > > > > Subject: [PolySix] Re: Polysix contact strip > > > > > > > > Hi, > > > > > > > > Looking at the schematics it's hard to tell - it doesn't seem like > there is > > > > one for the underside of the board ... > > > > > > > > Regards, > > > > > > > > Tony > > > > > > > > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> , > Peter > > > > M\ufffdrck <peterm@> wrote: > > > > > > > > > > Just compare with the schematics? > > > > > > > > > > BR, > > > > > Peter > > > > > > > > > > ----- Original Message ----- > > > > > From: tonezone020 > > > > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > > > > > Sent: Tuesday, July 24, 2012 12:52 AM > > > > > Subject: [PolySix] Re: Polysix contact strip > > > > > > > > > > > > > > > > > > > > Hi, > > > > > > > > > > Thanks for your message. > > > > > > > > > > I managed to sort the strips out - they had stretched, but with a > bit of > > > > coaxing the keys are now working. > > > > > > > > > > Been slowly trying to fix the battery leak problem with a tiny bit > of > > > > success and Old Crow's advice from his site. > > > > > > > > > > I discovered pin numbers 13 and 14 on IC31 are connected. Do you > know if > > > > this should be so? There seems to be a copper trace on the > > > > underneath > > > > circuitry. It also appears to be the same for IC30... > > > > > > > > > > Thanks, > > > > > > > > > > Tony > > > > > > > > > > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > , > > > > bastebraak <bastebraak@> wrote: > > > > > > > > > > > > > > > > > > > > > > > > Is the old one damaged or just not working well. I fixed the > contacts on > > > > my polysix with a paste i ordered online. > > > > > > > > > > > > > > > > > > Verzonden vanaf Samsung Mobiletonezone020 <swamp.gigs@> schreef: > > > > > > Hi All, > > > > > > > > > > > > Does anyone know where I can get a couple of 6 bubble contact > strips or > > > > alternatives for my synth, preferably in the Uk ? > > > > > > > > > > > > Many thanks in advance, > > > > > > > > > > > > Tony > > > > > > > > > > > > > > > > > > > > > > > > ------------------------------------ > > > > > > > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > > > > > > > > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > > > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > [Non-text portions of this message have been removed] ------------------------------------ Yahoo! Groups Links
2012-07-24 by Jed Jorgensen
Crow's schematic can be a big help: http://www.oldcrows.net/~oldcrow/synth/korg/polysix/crowlm367/klm367a_eagle_schem.gif I also track things using his 'see-through' board layout (from which the clones were derived). It is the same as the original (except the battery). j On Tue, Jul 24, 2012 at 1:35 PM, Peter M�rck <peterm@sunsetselection.com>wrote: > ** > > > Damnit! > The 14042 below IC26 in the schematics is marked IC34, but I see now > there's > another IC34 down in the lower right. > Ok, add another typo and give it credit for some more confusion... > > > ----- Original Message ----- > From: "Jed Jorgensen" <jed.jorgensen@gmail.com> > To: <PolySix@yahoogroups.com> > Sent: Tuesday, July 24, 2012 9:55 PM > Subject: Re: [PolySix] Re: Polysix contact strip > > Is that a typo (34 vs 24)? > > IC26 pin 5 should go to IC24 pin 5. > > jed > > On Tue, Jul 24, 2012 at 12:21 PM, tonezone020 > <swamp.gigs@googlemail.com>wrote: > > > ** > > > > > > > Hi Peter, > > > > I bridged IC26 pin 5 --> IC34 pin 5 and there's continuity to IC22 pin 11 > > , however doing so knocked out the Bank A thru to Write switches and when > > the I change patch switches, the sound played doesn't. > > > > Any pointers to where to look ? > > > > Thanks > > > > Tone > > > > > > --- In PolySix@yahoogroups.com, Peter M�rck <peterm@...> wrote: > > > > > > Hi, > > > > > > Regarding IC26 pin 5 --> IC34 pin 5: > > > > > > Yes, they should be connected to eachother. > > > But more importantly, do any of them have contact with pin 11 of the > > 8048 (IC22) ? > > > IC26 and IC34 are latches, controlled by pin 11 of the 8048. > > > The fact that IC26 and IC34 have pins 5 connected to eachother doesn't > > necessarily mean any of them will work, unless they in turn are connected > > to the 8048 pin 11. > > > So connection between IC22 pin 11 <--> IC26 pin 5 <--> IC34 pin 5 is > > what you need. > > > > > > BR, > > > Peter > > > > > > > > > > > > ----- Original Message ----- > > > From: tonezone020 > > > To: PolySix@yahoogroups.com > > > Sent: Tuesday, July 24, 2012 11:59 AM > > > Subject: [PolySix] Re: Polysix contact strip > > > > > > > > > > > > Erm, > > > > > > Correction - that should be IC24 p2, 1, 11, 10 that is connected to > IC32 > > p2, 1, 17, 16 > > > > > > Cheers, > > > > > > Tony > > > > > > --- In PolySix@yahoogroups.com, "tonezone020" <swamp.gigs@> wrote: > > > > > > > > Hi Don and Peter, > > > > > > > > Your messages have been very helpful consequently I've discovered > > anomalies elsewhere... > > > > > > > > IC26 p5 doesn't connect to IC34 p5 - should I bridge this ? > > > > > > > > IC26 to IC32 connections are all fine. > > > > > > > > Also I think there's a mistake in the schematics. Rather than IC34 > > connecting to IC32 it seems to be IC26 p2, 1, 11, 10 that is connected to > > IC32 p2, 1, 17, 16 > > > > > > > > Regards, > > > > > > > > Tony > > > > > > > > > > > > --- In PolySix@yahoogroups.com, "backshall1" <backshall1@> wrote: > > > > > > > > > > Yes, there is an error in the schematics. Pin 5 is +5v, not pin 4. > > Pin 4 > > > > > really does go to pin 12 on the 8048. I just checked a clone board > > and an > > > > > old original KLM-367. They are the same. > > > > > > > > > > Don B. > > > > > > > > > > > > > > > > > > > > _____ > > > > > > > > > > From: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com] On > > Behalf Of > > > > > Peter M�rck > > > > > Sent: Monday, July 23, 2012 8:25 PM > > > > > To: PolySix@yahoogroups.com > > > > > Subject: Re: [PolySix] Re: Polysix contact strip > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > You must be looking at the board layout drawing. > > > > > The schematics are different and have no "layers". They just show > > how it's > > > > > connected without actual physical constraints. > > > > > > > > > > Anyway, I just looked and pins 1,4,10,13,14 of IC31 are tied to +5V > > :) > > > > > > > > > > By the way, > > > > > I assume there's an error in the schematics indicating pin 4 tied > to > > pin12 > > > > > of the 8048, as it's also tied to +5V. > > > > > Either that's pin 5 instead, or vice versa. > > > > > > > > > > IC31 is just a quad AND gate acting as a buffer. Each of the AND > > gates has > > > > > one of its inputs tied to +5V so whatever appeard on the other > input > > will > > > > > also appear on the output of that gate. > > > > > > > > > > The traces under IC31 are usually attacked by the battery acid > > though and it > > > > > is good if you do continuity testing around that area. > > > > > > > > > > BR, > > > > > Peter > > > > > > > > > > ----- Original Message ----- > > > > > From: tonezone020 > > > > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > > > > > Sent: Tuesday, July 24, 2012 1:45 AM > > > > > Subject: [PolySix] Re: Polysix contact strip > > > > > > > > > > Hi, > > > > > > > > > > Looking at the schematics it's hard to tell - it doesn't seem like > > there is > > > > > one for the underside of the board ... > > > > > > > > > > Regards, > > > > > > > > > > Tony > > > > > > > > > > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > , > > Peter > > > > > M�rck <peterm@> wrote: > > > > > > > > > > > > Just compare with the schematics? > > > > > > > > > > > > BR, > > > > > > Peter > > > > > > > > > > > > ----- Original Message ----- > > > > > > From: tonezone020 > > > > > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > > > > > > Sent: Tuesday, July 24, 2012 12:52 AM > > > > > > Subject: [PolySix] Re: Polysix contact strip > > > > > > > > > > > > > > > > > > > > > > > > Hi, > > > > > > > > > > > > Thanks for your message. > > > > > > > > > > > > I managed to sort the strips out - they had stretched, but with a > > bit of > > > > > coaxing the keys are now working. > > > > > > > > > > > > Been slowly trying to fix the battery leak problem with a tiny > bit > > of > > > > > success and Old Crow's advice from his site. > > > > > > > > > > > > I discovered pin numbers 13 and 14 on IC31 are connected. Do you > > know if > > > > > this should be so? There seems to be a copper trace on the > > > > > underneath > > > > > circuitry. It also appears to be the same for IC30... > > > > > > > > > > > > Thanks, > > > > > > > > > > > > Tony > > > > > > > > > > > > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com > > > > , > > > > > bastebraak <bastebraak@> wrote: > > > > > > > > > > > > > > > > > > > > > > > > > > > > Is the old one damaged or just not working well. I fixed the > > contacts on > > > > > my polysix with a paste i ordered online. > > > > > > > > > > > > > > > > > > > > > Verzonden vanaf Samsung Mobiletonezone020 <swamp.gigs@> > schreef: > > > > > > > Hi All, > > > > > > > > > > > > > > Does anyone know where I can get a couple of 6 bubble contact > > strips or > > > > > alternatives for my synth, preferably in the Uk ? > > > > > > > > > > > > > > Many thanks in advance, > > > > > > > > > > > > > > Tony > > > > > > > > > > > > > > > > > > > > > > > > > > > > ------------------------------------ > > > > > > > > > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > > > > > > > > > > > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > > > > > > [Non-text portions of this message have been removed] > > ------------------------------------ > > Yahoo! Groups Links > > > [Non-text portions of this message have been removed]
2012-07-24 by Jed Jorgensen
oops -- meant to post this too: http://www.oldcrows.net/~oldcrow/synth/korg/polysix/crowlm367/klm367a_img.gif On Tue, Jul 24, 2012 at 1:43 PM, Jed Jorgensen <jed.jorgensen@gmail.com>wrote: > Crow's schematic can be a big help: > > http://www.oldcrows.net/~oldcrow/synth/korg/polysix/crowlm367/klm367a_eagle_schem.gif > > I also track things using his 'see-through' board layout (from which the > clones were derived). It is the same as the original (except the battery). > > j > > > On Tue, Jul 24, 2012 at 1:35 PM, Peter M�rck <peterm@sunsetselection.com>wrote: > >> ** >> >> >> Damnit! >> The 14042 below IC26 in the schematics is marked IC34, but I see now >> there's >> another IC34 down in the lower right. >> Ok, add another typo and give it credit for some more confusion... >> >> >> ----- Original Message ----- >> From: "Jed Jorgensen" <jed.jorgensen@gmail.com> >> To: <PolySix@yahoogroups.com> >> Sent: Tuesday, July 24, 2012 9:55 PM >> Subject: Re: [PolySix] Re: Polysix contact strip >> >> Is that a typo (34 vs 24)? >> >> IC26 pin 5 should go to IC24 pin 5. >> >> jed >> >> On Tue, Jul 24, 2012 at 12:21 PM, tonezone020 >> <swamp.gigs@googlemail.com>wrote: >> >> > ** >> >> > >> > >> > Hi Peter, >> > >> > I bridged IC26 pin 5 --> IC34 pin 5 and there's continuity to IC22 pin >> 11 >> > , however doing so knocked out the Bank A thru to Write switches and >> when >> > the I change patch switches, the sound played doesn't. >> > >> > Any pointers to where to look ? >> > >> > Thanks >> > >> > Tone >> > >> > >> > --- In PolySix@yahoogroups.com, Peter M�rck <peterm@...> wrote: >> > > >> > > Hi, >> > > >> > > Regarding IC26 pin 5 --> IC34 pin 5: >> > > >> > > Yes, they should be connected to eachother. >> > > But more importantly, do any of them have contact with pin 11 of the >> > 8048 (IC22) ? >> > > IC26 and IC34 are latches, controlled by pin 11 of the 8048. >> > > The fact that IC26 and IC34 have pins 5 connected to eachother doesn't >> > necessarily mean any of them will work, unless they in turn are >> connected >> > to the 8048 pin 11. >> > > So connection between IC22 pin 11 <--> IC26 pin 5 <--> IC34 pin 5 is >> > what you need. >> > > >> > > BR, >> > > Peter >> > > >> > > >> > > >> > > ----- Original Message ----- >> > > From: tonezone020 >> > > To: PolySix@yahoogroups.com >> > > Sent: Tuesday, July 24, 2012 11:59 AM >> > > Subject: [PolySix] Re: Polysix contact strip >> > > >> > > >> > > >> > > Erm, >> > > >> > > Correction - that should be IC24 p2, 1, 11, 10 that is connected to >> IC32 >> > p2, 1, 17, 16 >> > > >> > > Cheers, >> > > >> > > Tony >> > > >> > > --- In PolySix@yahoogroups.com, "tonezone020" <swamp.gigs@> wrote: >> > > > >> > > > Hi Don and Peter, >> > > > >> > > > Your messages have been very helpful consequently I've discovered >> > anomalies elsewhere... >> > > > >> > > > IC26 p5 doesn't connect to IC34 p5 - should I bridge this ? >> > > > >> > > > IC26 to IC32 connections are all fine. >> > > > >> > > > Also I think there's a mistake in the schematics. Rather than IC34 >> > connecting to IC32 it seems to be IC26 p2, 1, 11, 10 that is connected >> to >> > IC32 p2, 1, 17, 16 >> > > > >> > > > Regards, >> > > > >> > > > Tony >> > > > >> > > > >> > > > --- In PolySix@yahoogroups.com, "backshall1" <backshall1@> wrote: >> > > > > >> > > > > Yes, there is an error in the schematics. Pin 5 is +5v, not pin 4. >> > Pin 4 >> > > > > really does go to pin 12 on the 8048. I just checked a clone board >> > and an >> > > > > old original KLM-367. They are the same. >> > > > > >> > > > > Don B. >> > > > > >> > > > > >> > > > > >> > > > > _____ >> > > > > >> > > > > From: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com] On >> > Behalf Of >> > > > > Peter M�rck >> > > > > Sent: Monday, July 23, 2012 8:25 PM >> > > > > To: PolySix@yahoogroups.com >> > > > > Subject: Re: [PolySix] Re: Polysix contact strip >> > > > > >> > > > > >> > > > > >> > > > > >> > > > > >> > > > > You must be looking at the board layout drawing. >> > > > > The schematics are different and have no "layers". They just show >> > how it's >> > > > > connected without actual physical constraints. >> > > > > >> > > > > Anyway, I just looked and pins 1,4,10,13,14 of IC31 are tied to >> +5V >> > :) >> > > > > >> > > > > By the way, >> > > > > I assume there's an error in the schematics indicating pin 4 tied >> to >> > pin12 >> > > > > of the 8048, as it's also tied to +5V. >> > > > > Either that's pin 5 instead, or vice versa. >> > > > > >> > > > > IC31 is just a quad AND gate acting as a buffer. Each of the AND >> > gates has >> > > > > one of its inputs tied to +5V so whatever appeard on the other >> input >> > will >> > > > > also appear on the output of that gate. >> > > > > >> > > > > The traces under IC31 are usually attacked by the battery acid >> > though and it >> > > > > is good if you do continuity testing around that area. >> > > > > >> > > > > BR, >> > > > > Peter >> > > > > >> > > > > ----- Original Message ----- >> > > > > From: tonezone020 >> > > > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> >> > > > > Sent: Tuesday, July 24, 2012 1:45 AM >> > > > > Subject: [PolySix] Re: Polysix contact strip >> > > > > >> > > > > Hi, >> > > > > >> > > > > Looking at the schematics it's hard to tell - it doesn't seem like >> > there is >> > > > > one for the underside of the board ... >> > > > > >> > > > > Regards, >> > > > > >> > > > > Tony >> > > > > >> > > > > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> >> , >> > Peter >> > > > > M�rck <peterm@> wrote: >> > > > > > >> > > > > > Just compare with the schematics? >> > > > > > >> > > > > > BR, >> > > > > > Peter >> > > > > > >> > > > > > ----- Original Message ----- >> > > > > > From: tonezone020 >> > > > > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> >> > > > > > Sent: Tuesday, July 24, 2012 12:52 AM >> > > > > > Subject: [PolySix] Re: Polysix contact strip >> > > > > > >> > > > > > >> > > > > > >> > > > > > Hi, >> > > > > > >> > > > > > Thanks for your message. >> > > > > > >> > > > > > I managed to sort the strips out - they had stretched, but with >> a >> > bit of >> > > > > coaxing the keys are now working. >> > > > > > >> > > > > > Been slowly trying to fix the battery leak problem with a tiny >> bit >> > of >> > > > > success and Old Crow's advice from his site. >> > > > > > >> > > > > > I discovered pin numbers 13 and 14 on IC31 are connected. Do you >> > know if >> > > > > this should be so? There seems to be a copper trace on the >> > > > > underneath >> > > > > circuitry. It also appears to be the same for IC30... >> > > > > > >> > > > > > Thanks, >> > > > > > >> > > > > > Tony >> > > > > > >> > > > > > --- In PolySix@yahoogroups.com <mailto: >> PolySix%40yahoogroups.com> >> > , >> > > > > bastebraak <bastebraak@> wrote: >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > > > Is the old one damaged or just not working well. I fixed the >> > contacts on >> > > > > my polysix with a paste i ordered online. >> > > > > > > >> > > > > > > >> > > > > > > Verzonden vanaf Samsung Mobiletonezone020 <swamp.gigs@> >> schreef: >> > > > > > > Hi All, >> > > > > > > >> > > > > > > Does anyone know where I can get a couple of 6 bubble contact >> > strips or >> > > > > alternatives for my synth, preferably in the Uk ? >> > > > > > > >> > > > > > > Many thanks in advance, >> > > > > > > >> > > > > > > Tony >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > > > ------------------------------------ >> > > > > > > >> > > > > > > Yahoo! Groups Links >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > > > [Non-text portions of this message have been removed] >> > > > > > > >> > > > > > >> > > > > > >> > > > > > >> > > > > > >> > > > > > >> > > > > > [Non-text portions of this message have been removed] >> > > > > > >> > > > > >> > > > > [Non-text portions of this message have been removed] >> > > > > >> > > > > >> > > > > >> > > > > >> > > > > >> > > > > [Non-text portions of this message have been removed] >> > > > > >> > > > >> > > >> > > >> > > >> > > >> > > >> > > [Non-text portions of this message have been removed] >> > > >> > >> > >> > >> >> [Non-text portions of this message have been removed] >> >> ------------------------------------ >> >> Yahoo! Groups Links >> >> >> > > [Non-text portions of this message have been removed]
2012-07-24 by Peter Mörck
Oh, nice :) Thanks for that. Right, now listen to Jed, he knows better ;) Sorry for the confusion but I was only looking at the old scanned schematics, and they're obviously full off mistakes... BR, Peter
----- Original Message ----- From: "Jed Jorgensen" <jed.jorgensen@gmail.com> To: <PolySix@yahoogroups.com> Sent: Tuesday, July 24, 2012 10:43 PM Subject: Re: [PolySix] Re: Polysix contact strip oops -- meant to post this too: http://www.oldcrows.net/~oldcrow/synth/korg/polysix/crowlm367/klm367a_img.gif On Tue, Jul 24, 2012 at 1:43 PM, Jed Jorgensen <jed.jorgensen@gmail.com>wrote: > Crow's schematic can be a big help: > > http://www.oldcrows.net/~oldcrow/synth/korg/polysix/crowlm367/klm367a_eagle_schem.gif > > I also track things using his 'see-through' board layout (from which the > clones were derived). It is the same as the original (except the battery). > > j > > > On Tue, Jul 24, 2012 at 1:35 PM, Peter M\ufffdrck > <peterm@sunsetselection.com>wrote: > >> ** >> >> >> Damnit! >> The 14042 below IC26 in the schematics is marked IC34, but I see now >> there's >> another IC34 down in the lower right. >> Ok, add another typo and give it credit for some more confusion... >> >> >> ----- Original Message ----- >> From: "Jed Jorgensen" <jed.jorgensen@gmail.com> >> To: <PolySix@yahoogroups.com> >> Sent: Tuesday, July 24, 2012 9:55 PM >> Subject: Re: [PolySix] Re: Polysix contact strip >> >> Is that a typo (34 vs 24)? >> >> IC26 pin 5 should go to IC24 pin 5. >> >> jed >> >> On Tue, Jul 24, 2012 at 12:21 PM, tonezone020 >> <swamp.gigs@googlemail.com>wrote: >> >> > ** >> >> > >> > >> > Hi Peter, >> > >> > I bridged IC26 pin 5 --> IC34 pin 5 and there's continuity to IC22 pin >> 11 >> > , however doing so knocked out the Bank A thru to Write switches and >> when >> > the I change patch switches, the sound played doesn't. >> > >> > Any pointers to where to look ? >> > >> > Thanks >> > >> > Tone >> > >> > >> > --- In PolySix@yahoogroups.com, Peter M\ufffdrck <peterm@...> wrote: >> > > >> > > Hi, >> > > >> > > Regarding IC26 pin 5 --> IC34 pin 5: >> > > >> > > Yes, they should be connected to eachother. >> > > But more importantly, do any of them have contact with pin 11 of the >> > 8048 (IC22) ? >> > > IC26 and IC34 are latches, controlled by pin 11 of the 8048. >> > > The fact that IC26 and IC34 have pins 5 connected to eachother >> > > doesn't >> > necessarily mean any of them will work, unless they in turn are >> connected >> > to the 8048 pin 11. >> > > So connection between IC22 pin 11 <--> IC26 pin 5 <--> IC34 pin 5 is >> > what you need. >> > > >> > > BR, >> > > Peter >> > > >> > > >> > > >> > > ----- Original Message ----- >> > > From: tonezone020 >> > > To: PolySix@yahoogroups.com >> > > Sent: Tuesday, July 24, 2012 11:59 AM >> > > Subject: [PolySix] Re: Polysix contact strip >> > > >> > > >> > > >> > > Erm, >> > > >> > > Correction - that should be IC24 p2, 1, 11, 10 that is connected to >> IC32 >> > p2, 1, 17, 16 >> > > >> > > Cheers, >> > > >> > > Tony >> > > >> > > --- In PolySix@yahoogroups.com, "tonezone020" <swamp.gigs@> wrote: >> > > > >> > > > Hi Don and Peter, >> > > > >> > > > Your messages have been very helpful consequently I've discovered >> > anomalies elsewhere... >> > > > >> > > > IC26 p5 doesn't connect to IC34 p5 - should I bridge this ? >> > > > >> > > > IC26 to IC32 connections are all fine. >> > > > >> > > > Also I think there's a mistake in the schematics. Rather than IC34 >> > connecting to IC32 it seems to be IC26 p2, 1, 11, 10 that is connected >> to >> > IC32 p2, 1, 17, 16 >> > > > >> > > > Regards, >> > > > >> > > > Tony >> > > > >> > > > >> > > > --- In PolySix@yahoogroups.com, "backshall1" <backshall1@> wrote: >> > > > > >> > > > > Yes, there is an error in the schematics. Pin 5 is +5v, not pin >> > > > > 4. >> > Pin 4 >> > > > > really does go to pin 12 on the 8048. I just checked a clone >> > > > > board >> > and an >> > > > > old original KLM-367. They are the same. >> > > > > >> > > > > Don B. >> > > > > >> > > > > >> > > > > >> > > > > _____ >> > > > > >> > > > > From: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com] On >> > Behalf Of >> > > > > Peter M\ufffdrck >> > > > > Sent: Monday, July 23, 2012 8:25 PM >> > > > > To: PolySix@yahoogroups.com >> > > > > Subject: Re: [PolySix] Re: Polysix contact strip >> > > > > >> > > > > >> > > > > >> > > > > >> > > > > >> > > > > You must be looking at the board layout drawing. >> > > > > The schematics are different and have no "layers". They just show >> > how it's >> > > > > connected without actual physical constraints. >> > > > > >> > > > > Anyway, I just looked and pins 1,4,10,13,14 of IC31 are tied to >> +5V >> > :) >> > > > > >> > > > > By the way, >> > > > > I assume there's an error in the schematics indicating pin 4 tied >> to >> > pin12 >> > > > > of the 8048, as it's also tied to +5V. >> > > > > Either that's pin 5 instead, or vice versa. >> > > > > >> > > > > IC31 is just a quad AND gate acting as a buffer. Each of the AND >> > gates has >> > > > > one of its inputs tied to +5V so whatever appeard on the other >> input >> > will >> > > > > also appear on the output of that gate. >> > > > > >> > > > > The traces under IC31 are usually attacked by the battery acid >> > though and it >> > > > > is good if you do continuity testing around that area. >> > > > > >> > > > > BR, >> > > > > Peter >> > > > > >> > > > > ----- Original Message ----- >> > > > > From: tonezone020 >> > > > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> >> > > > > Sent: Tuesday, July 24, 2012 1:45 AM >> > > > > Subject: [PolySix] Re: Polysix contact strip >> > > > > >> > > > > Hi, >> > > > > >> > > > > Looking at the schematics it's hard to tell - it doesn't seem >> > > > > like >> > there is >> > > > > one for the underside of the board ... >> > > > > >> > > > > Regards, >> > > > > >> > > > > Tony >> > > > > >> > > > > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> >> , >> > Peter >> > > > > M\ufffdrck <peterm@> wrote: >> > > > > > >> > > > > > Just compare with the schematics? >> > > > > > >> > > > > > BR, >> > > > > > Peter >> > > > > > >> > > > > > ----- Original Message ----- >> > > > > > From: tonezone020 >> > > > > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> >> > > > > > Sent: Tuesday, July 24, 2012 12:52 AM >> > > > > > Subject: [PolySix] Re: Polysix contact strip >> > > > > > >> > > > > > >> > > > > > >> > > > > > Hi, >> > > > > > >> > > > > > Thanks for your message. >> > > > > > >> > > > > > I managed to sort the strips out - they had stretched, but with >> a >> > bit of >> > > > > coaxing the keys are now working. >> > > > > > >> > > > > > Been slowly trying to fix the battery leak problem with a tiny >> bit >> > of >> > > > > success and Old Crow's advice from his site. >> > > > > > >> > > > > > I discovered pin numbers 13 and 14 on IC31 are connected. Do >> > > > > > you >> > know if >> > > > > this should be so? There seems to be a copper trace on the >> > > > > underneath >> > > > > circuitry. It also appears to be the same for IC30... >> > > > > > >> > > > > > Thanks, >> > > > > > >> > > > > > Tony >> > > > > > >> > > > > > --- In PolySix@yahoogroups.com <mailto: >> PolySix%40yahoogroups.com> >> > , >> > > > > bastebraak <bastebraak@> wrote: >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > > > Is the old one damaged or just not working well. I fixed the >> > contacts on >> > > > > my polysix with a paste i ordered online. >> > > > > > > >> > > > > > > >> > > > > > > Verzonden vanaf Samsung Mobiletonezone020 <swamp.gigs@> >> schreef: >> > > > > > > Hi All, >> > > > > > > >> > > > > > > Does anyone know where I can get a couple of 6 bubble contact >> > strips or >> > > > > alternatives for my synth, preferably in the Uk ? >> > > > > > > >> > > > > > > Many thanks in advance, >> > > > > > > >> > > > > > > Tony >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > > > ------------------------------------ >> > > > > > > >> > > > > > > Yahoo! Groups Links >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > > > [Non-text portions of this message have been removed] >> > > > > > > >> > > > > > >> > > > > > >> > > > > > >> > > > > > >> > > > > > >> > > > > > [Non-text portions of this message have been removed] >> > > > > > >> > > > > >> > > > > [Non-text portions of this message have been removed] >> > > > > >> > > > > >> > > > > >> > > > > >> > > > > >> > > > > [Non-text portions of this message have been removed] >> > > > > >> > > > >> > > >> > > >> > > >> > > >> > > >> > > [Non-text portions of this message have been removed] >> > > >> > >> > >> > >> >> [Non-text portions of this message have been removed] >> >> ------------------------------------ >> >> Yahoo! Groups Links >> >> >> > > [Non-text portions of this message have been removed] ------------------------------------ Yahoo! Groups Links
2012-07-24 by james meagher
I believe that this is the most clear, complete and up to date Polysix service manual on the web: http://www.synfo.nl/servicemanuals/Korg/POLYSIX_SERVICE_MANUAL.pdf Hope it helps! James On Tue, Jul 24, 2012 at 4:17 PM, Peter M�rck <peterm@sunsetselection.com>wrote: > ** > > > Oh, nice :) > Thanks for that. > > Right, now listen to Jed, he knows better ;) > Sorry for the confusion but I was only looking at the old scanned > schematics, and they're obviously full off mistakes... > > > BR, > Peter > > ----- Original Message ----- > From: "Jed Jorgensen" <jed.jorgensen@gmail.com> > To: <PolySix@yahoogroups.com> > Sent: Tuesday, July 24, 2012 10:43 PM > Subject: Re: [PolySix] Re: Polysix contact strip > > oops -- meant to post this too: > > http://www.oldcrows.net/~oldcrow/synth/korg/polysix/crowlm367/klm367a_img.gif > > On Tue, Jul 24, 2012 at 1:43 PM, Jed Jorgensen > <jed.jorgensen@gmail.com>wrote: > > > Crow's schematic can be a big help: > > > > > http://www.oldcrows.net/~oldcrow/synth/korg/polysix/crowlm367/klm367a_eagle_schem.gif > > > > I also track things using his 'see-through' board layout (from which the > > clones were derived). It is the same as the original (except the > battery). > > > > j > > > > > > On Tue, Jul 24, 2012 at 1:35 PM, Peter M�rck > > <peterm@sunsetselection.com>wrote: > > > >> ** > >> > >> > >> Damnit! > >> The 14042 below IC26 in the schematics is marked IC34, but I see now > >> there's > >> another IC34 down in the lower right. > >> Ok, add another typo and give it credit for some more confusion... > >> > >> > >> ----- Original Message ----- > >> From: "Jed Jorgensen" <jed.jorgensen@gmail.com> > >> To: <PolySix@yahoogroups.com> > >> Sent: Tuesday, July 24, 2012 9:55 PM > >> Subject: Re: [PolySix] Re: Polysix contact strip > >> > >> Is that a typo (34 vs 24)? > >> > >> IC26 pin 5 should go to IC24 pin 5. > >> > >> jed > >> > >> On Tue, Jul 24, 2012 at 12:21 PM, tonezone020 > >> <swamp.gigs@googlemail.com>wrote: > >> > >> > ** > >> > >> > > >> > > >> > Hi Peter, > >> > > >> > I bridged IC26 pin 5 --> IC34 pin 5 and there's continuity to IC22 pin > >> 11 > >> > , however doing so knocked out the Bank A thru to Write switches and > >> when > >> > the I change patch switches, the sound played doesn't. > >> > > >> > Any pointers to where to look ? > >> > > >> > Thanks > >> > > >> > Tone > >> > > >> > > >> > --- In PolySix@yahoogroups.com, Peter M�rck <peterm@...> wrote: > >> > > > >> > > Hi, > >> > > > >> > > Regarding IC26 pin 5 --> IC34 pin 5: > >> > > > >> > > Yes, they should be connected to eachother. > >> > > But more importantly, do any of them have contact with pin 11 of the > >> > 8048 (IC22) ? > >> > > IC26 and IC34 are latches, controlled by pin 11 of the 8048. > >> > > The fact that IC26 and IC34 have pins 5 connected to eachother > >> > > doesn't > >> > necessarily mean any of them will work, unless they in turn are > >> connected > >> > to the 8048 pin 11. > >> > > So connection between IC22 pin 11 <--> IC26 pin 5 <--> IC34 pin 5 is > >> > what you need. > >> > > > >> > > BR, > >> > > Peter > >> > > > >> > > > >> > > > >> > > ----- Original Message ----- > >> > > From: tonezone020 > >> > > To: PolySix@yahoogroups.com > >> > > Sent: Tuesday, July 24, 2012 11:59 AM > >> > > Subject: [PolySix] Re: Polysix contact strip > >> > > > >> > > > >> > > > >> > > Erm, > >> > > > >> > > Correction - that should be IC24 p2, 1, 11, 10 that is connected to > >> IC32 > >> > p2, 1, 17, 16 > >> > > > >> > > Cheers, > >> > > > >> > > Tony > >> > > > >> > > --- In PolySix@yahoogroups.com, "tonezone020" <swamp.gigs@> wrote: > >> > > > > >> > > > Hi Don and Peter, > >> > > > > >> > > > Your messages have been very helpful consequently I've discovered > >> > anomalies elsewhere... > >> > > > > >> > > > IC26 p5 doesn't connect to IC34 p5 - should I bridge this ? > >> > > > > >> > > > IC26 to IC32 connections are all fine. > >> > > > > >> > > > Also I think there's a mistake in the schematics. Rather than IC34 > >> > connecting to IC32 it seems to be IC26 p2, 1, 11, 10 that is connected > >> to > >> > IC32 p2, 1, 17, 16 > >> > > > > >> > > > Regards, > >> > > > > >> > > > Tony > >> > > > > >> > > > > >> > > > --- In PolySix@yahoogroups.com, "backshall1" <backshall1@> wrote: > >> > > > > > >> > > > > Yes, there is an error in the schematics. Pin 5 is +5v, not pin > >> > > > > 4. > >> > Pin 4 > >> > > > > really does go to pin 12 on the 8048. I just checked a clone > >> > > > > board > >> > and an > >> > > > > old original KLM-367. They are the same. > >> > > > > > >> > > > > Don B. > >> > > > > > >> > > > > > >> > > > > > >> > > > > _____ > >> > > > > > >> > > > > From: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com] > On > >> > Behalf Of > >> > > > > Peter M�rck > >> > > > > Sent: Monday, July 23, 2012 8:25 PM > >> > > > > To: PolySix@yahoogroups.com > >> > > > > Subject: Re: [PolySix] Re: Polysix contact strip > >> > > > > > >> > > > > > >> > > > > > >> > > > > > >> > > > > > >> > > > > You must be looking at the board layout drawing. > >> > > > > The schematics are different and have no "layers". They just > show > >> > how it's > >> > > > > connected without actual physical constraints. > >> > > > > > >> > > > > Anyway, I just looked and pins 1,4,10,13,14 of IC31 are tied to > >> +5V > >> > :) > >> > > > > > >> > > > > By the way, > >> > > > > I assume there's an error in the schematics indicating pin 4 > tied > >> to > >> > pin12 > >> > > > > of the 8048, as it's also tied to +5V. > >> > > > > Either that's pin 5 instead, or vice versa. > >> > > > > > >> > > > > IC31 is just a quad AND gate acting as a buffer. Each of the AND > >> > gates has > >> > > > > one of its inputs tied to +5V so whatever appeard on the other > >> input > >> > will > >> > > > > also appear on the output of that gate. > >> > > > > > >> > > > > The traces under IC31 are usually attacked by the battery acid > >> > though and it > >> > > > > is good if you do continuity testing around that area. > >> > > > > > >> > > > > BR, > >> > > > > Peter > >> > > > > > >> > > > > ----- Original Message ----- > >> > > > > From: tonezone020 > >> > > > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > >> > > > > Sent: Tuesday, July 24, 2012 1:45 AM > >> > > > > Subject: [PolySix] Re: Polysix contact strip > >> > > > > > >> > > > > Hi, > >> > > > > > >> > > > > Looking at the schematics it's hard to tell - it doesn't seem > >> > > > > like > >> > there is > >> > > > > one for the underside of the board ... > >> > > > > > >> > > > > Regards, > >> > > > > > >> > > > > Tony > >> > > > > > >> > > > > --- In PolySix@yahoogroups.com <mailto: > PolySix%40yahoogroups.com> > >> , > >> > Peter > >> > > > > M�rck <peterm@> wrote: > >> > > > > > > >> > > > > > Just compare with the schematics? > >> > > > > > > >> > > > > > BR, > >> > > > > > Peter > >> > > > > > > >> > > > > > ----- Original Message ----- > >> > > > > > From: tonezone020 > >> > > > > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com > > > >> > > > > > Sent: Tuesday, July 24, 2012 12:52 AM > >> > > > > > Subject: [PolySix] Re: Polysix contact strip > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > > Hi, > >> > > > > > > >> > > > > > Thanks for your message. > >> > > > > > > >> > > > > > I managed to sort the strips out - they had stretched, but > with > >> a > >> > bit of > >> > > > > coaxing the keys are now working. > >> > > > > > > >> > > > > > Been slowly trying to fix the battery leak problem with a tiny > >> bit > >> > of > >> > > > > success and Old Crow's advice from his site. > >> > > > > > > >> > > > > > I discovered pin numbers 13 and 14 on IC31 are connected. Do > >> > > > > > you > >> > know if > >> > > > > this should be so? There seems to be a copper trace on the > >> > > > > underneath > >> > > > > circuitry. It also appears to be the same for IC30... > >> > > > > > > >> > > > > > Thanks, > >> > > > > > > >> > > > > > Tony > >> > > > > > > >> > > > > > --- In PolySix@yahoogroups.com <mailto: > >> PolySix%40yahoogroups.com> > >> > , > >> > > > > bastebraak <bastebraak@> wrote: > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > > Is the old one damaged or just not working well. I fixed the > >> > contacts on > >> > > > > my polysix with a paste i ordered online. > >> > > > > > > > >> > > > > > > > >> > > > > > > Verzonden vanaf Samsung Mobiletonezone020 <swamp.gigs@> > >> schreef: > >> > > > > > > Hi All, > >> > > > > > > > >> > > > > > > Does anyone know where I can get a couple of 6 bubble > contact > >> > strips or > >> > > > > alternatives for my synth, preferably in the Uk ? > >> > > > > > > > >> > > > > > > Many thanks in advance, > >> > > > > > > > >> > > > > > > Tony > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > > ------------------------------------ > >> > > > > > > > >> > > > > > > Yahoo! Groups Links > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > > [Non-text portions of this message have been removed] > >> > > > > > > > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > > [Non-text portions of this message have been removed] > >> > > > > > > >> > > > > > >> > > > > [Non-text portions of this message have been removed] > >> > > > > > >> > > > > > >> > > > > > >> > > > > > >> > > > > > >> > > > > [Non-text portions of this message have been removed] > >> > > > > > >> > > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> > > [Non-text portions of this message have been removed] > >> > > > >> > > >> > > >> > > >> > >> [Non-text portions of this message have been removed] > >> > >> ------------------------------------ > >> > >> Yahoo! Groups Links > >> > >> > >> > > > > > > [Non-text portions of this message have been removed] > > ------------------------------------ > > Yahoo! Groups Links > > > -- C'est La Guerre Moving Pictures Inc. 364 Home Street Winnipeg, Manitoba R3G 1X4 (204) 918 9317 [Non-text portions of this message have been removed]
2012-07-24 by Jed Jorgensen
Well...I don't know if I 'know better'. I just have some other tools. I'm not that great at troubleshooting, honestly. j On Tue, Jul 24, 2012 at 2:17 PM, Peter M�rck <peterm@sunsetselection.com>wrote: > ** > > > Oh, nice :) > Thanks for that. > > Right, now listen to Jed, he knows better ;) > Sorry for the confusion but I was only looking at the old scanned > schematics, and they're obviously full off mistakes... > > > BR, > Peter > > ----- Original Message ----- > From: "Jed Jorgensen" <jed.jorgensen@gmail.com> > To: <PolySix@yahoogroups.com> > Sent: Tuesday, July 24, 2012 10:43 PM > Subject: Re: [PolySix] Re: Polysix contact strip > > oops -- meant to post this too: > > http://www.oldcrows.net/~oldcrow/synth/korg/polysix/crowlm367/klm367a_img.gif > > On Tue, Jul 24, 2012 at 1:43 PM, Jed Jorgensen > <jed.jorgensen@gmail.com>wrote: > > > Crow's schematic can be a big help: > > > > > http://www.oldcrows.net/~oldcrow/synth/korg/polysix/crowlm367/klm367a_eagle_schem.gif > > > > I also track things using his 'see-through' board layout (from which the > > clones were derived). It is the same as the original (except the > battery). > > > > j > > > > > > On Tue, Jul 24, 2012 at 1:35 PM, Peter M�rck > > <peterm@sunsetselection.com>wrote: > > > >> ** > > >> > >> > >> Damnit! > >> The 14042 below IC26 in the schematics is marked IC34, but I see now > >> there's > >> another IC34 down in the lower right. > >> Ok, add another typo and give it credit for some more confusion... > >> > >> > >> ----- Original Message ----- > >> From: "Jed Jorgensen" <jed.jorgensen@gmail.com> > >> To: <PolySix@yahoogroups.com> > >> Sent: Tuesday, July 24, 2012 9:55 PM > >> Subject: Re: [PolySix] Re: Polysix contact strip > >> > >> Is that a typo (34 vs 24)? > >> > >> IC26 pin 5 should go to IC24 pin 5. > >> > >> jed > >> > >> On Tue, Jul 24, 2012 at 12:21 PM, tonezone020 > >> <swamp.gigs@googlemail.com>wrote: > >> > >> > ** > >> > >> > > >> > > >> > Hi Peter, > >> > > >> > I bridged IC26 pin 5 --> IC34 pin 5 and there's continuity to IC22 pin > >> 11 > >> > , however doing so knocked out the Bank A thru to Write switches and > >> when > >> > the I change patch switches, the sound played doesn't. > >> > > >> > Any pointers to where to look ? > >> > > >> > Thanks > >> > > >> > Tone > >> > > >> > > >> > --- In PolySix@yahoogroups.com, Peter M�rck <peterm@...> wrote: > >> > > > >> > > Hi, > >> > > > >> > > Regarding IC26 pin 5 --> IC34 pin 5: > >> > > > >> > > Yes, they should be connected to eachother. > >> > > But more importantly, do any of them have contact with pin 11 of the > >> > 8048 (IC22) ? > >> > > IC26 and IC34 are latches, controlled by pin 11 of the 8048. > >> > > The fact that IC26 and IC34 have pins 5 connected to eachother > >> > > doesn't > >> > necessarily mean any of them will work, unless they in turn are > >> connected > >> > to the 8048 pin 11. > >> > > So connection between IC22 pin 11 <--> IC26 pin 5 <--> IC34 pin 5 is > >> > what you need. > >> > > > >> > > BR, > >> > > Peter > >> > > > >> > > > >> > > > >> > > ----- Original Message ----- > >> > > From: tonezone020 > >> > > To: PolySix@yahoogroups.com > >> > > Sent: Tuesday, July 24, 2012 11:59 AM > >> > > Subject: [PolySix] Re: Polysix contact strip > >> > > > >> > > > >> > > > >> > > Erm, > >> > > > >> > > Correction - that should be IC24 p2, 1, 11, 10 that is connected to > >> IC32 > >> > p2, 1, 17, 16 > >> > > > >> > > Cheers, > >> > > > >> > > Tony > >> > > > >> > > --- In PolySix@yahoogroups.com, "tonezone020" <swamp.gigs@> wrote: > >> > > > > >> > > > Hi Don and Peter, > >> > > > > >> > > > Your messages have been very helpful consequently I've discovered > >> > anomalies elsewhere... > >> > > > > >> > > > IC26 p5 doesn't connect to IC34 p5 - should I bridge this ? > >> > > > > >> > > > IC26 to IC32 connections are all fine. > >> > > > > >> > > > Also I think there's a mistake in the schematics. Rather than IC34 > >> > connecting to IC32 it seems to be IC26 p2, 1, 11, 10 that is connected > >> to > >> > IC32 p2, 1, 17, 16 > >> > > > > >> > > > Regards, > >> > > > > >> > > > Tony > >> > > > > >> > > > > >> > > > --- In PolySix@yahoogroups.com, "backshall1" <backshall1@> wrote: > >> > > > > > >> > > > > Yes, there is an error in the schematics. Pin 5 is +5v, not pin > >> > > > > 4. > >> > Pin 4 > >> > > > > really does go to pin 12 on the 8048. I just checked a clone > >> > > > > board > >> > and an > >> > > > > old original KLM-367. They are the same. > >> > > > > > >> > > > > Don B. > >> > > > > > >> > > > > > >> > > > > > >> > > > > _____ > >> > > > > > >> > > > > From: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com] > On > >> > Behalf Of > >> > > > > Peter M�rck > >> > > > > Sent: Monday, July 23, 2012 8:25 PM > >> > > > > To: PolySix@yahoogroups.com > >> > > > > Subject: Re: [PolySix] Re: Polysix contact strip > >> > > > > > >> > > > > > >> > > > > > >> > > > > > >> > > > > > >> > > > > You must be looking at the board layout drawing. > >> > > > > The schematics are different and have no "layers". They just > show > >> > how it's > >> > > > > connected without actual physical constraints. > >> > > > > > >> > > > > Anyway, I just looked and pins 1,4,10,13,14 of IC31 are tied to > >> +5V > >> > :) > >> > > > > > >> > > > > By the way, > >> > > > > I assume there's an error in the schematics indicating pin 4 > tied > >> to > >> > pin12 > >> > > > > of the 8048, as it's also tied to +5V. > >> > > > > Either that's pin 5 instead, or vice versa. > >> > > > > > >> > > > > IC31 is just a quad AND gate acting as a buffer. Each of the AND > >> > gates has > >> > > > > one of its inputs tied to +5V so whatever appeard on the other > >> input > >> > will > >> > > > > also appear on the output of that gate. > >> > > > > > >> > > > > The traces under IC31 are usually attacked by the battery acid > >> > though and it > >> > > > > is good if you do continuity testing around that area. > >> > > > > > >> > > > > BR, > >> > > > > Peter > >> > > > > > >> > > > > ----- Original Message ----- > >> > > > > From: tonezone020 > >> > > > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > >> > > > > Sent: Tuesday, July 24, 2012 1:45 AM > >> > > > > Subject: [PolySix] Re: Polysix contact strip > >> > > > > > >> > > > > Hi, > >> > > > > > >> > > > > Looking at the schematics it's hard to tell - it doesn't seem > >> > > > > like > >> > there is > >> > > > > one for the underside of the board ... > >> > > > > > >> > > > > Regards, > >> > > > > > >> > > > > Tony > >> > > > > > >> > > > > --- In PolySix@yahoogroups.com <mailto: > PolySix%40yahoogroups.com> > >> , > >> > Peter > >> > > > > M�rck <peterm@> wrote: > >> > > > > > > >> > > > > > Just compare with the schematics? > >> > > > > > > >> > > > > > BR, > >> > > > > > Peter > >> > > > > > > >> > > > > > ----- Original Message ----- > >> > > > > > From: tonezone020 > >> > > > > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com > > > >> > > > > > Sent: Tuesday, July 24, 2012 12:52 AM > >> > > > > > Subject: [PolySix] Re: Polysix contact strip > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > > Hi, > >> > > > > > > >> > > > > > Thanks for your message. > >> > > > > > > >> > > > > > I managed to sort the strips out - they had stretched, but > with > >> a > >> > bit of > >> > > > > coaxing the keys are now working. > >> > > > > > > >> > > > > > Been slowly trying to fix the battery leak problem with a tiny > >> bit > >> > of > >> > > > > success and Old Crow's advice from his site. > >> > > > > > > >> > > > > > I discovered pin numbers 13 and 14 on IC31 are connected. Do > >> > > > > > you > >> > know if > >> > > > > this should be so? There seems to be a copper trace on the > >> > > > > underneath > >> > > > > circuitry. It also appears to be the same for IC30... > >> > > > > > > >> > > > > > Thanks, > >> > > > > > > >> > > > > > Tony > >> > > > > > > >> > > > > > --- In PolySix@yahoogroups.com <mailto: > >> PolySix%40yahoogroups.com> > >> > , > >> > > > > bastebraak <bastebraak@> wrote: > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > > Is the old one damaged or just not working well. I fixed the > >> > contacts on > >> > > > > my polysix with a paste i ordered online. > >> > > > > > > > >> > > > > > > > >> > > > > > > Verzonden vanaf Samsung Mobiletonezone020 <swamp.gigs@> > >> schreef: > >> > > > > > > Hi All, > >> > > > > > > > >> > > > > > > Does anyone know where I can get a couple of 6 bubble > contact > >> > strips or > >> > > > > alternatives for my synth, preferably in the Uk ? > >> > > > > > > > >> > > > > > > Many thanks in advance, > >> > > > > > > > >> > > > > > > Tony > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > > ------------------------------------ > >> > > > > > > > >> > > > > > > Yahoo! Groups Links > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > > [Non-text portions of this message have been removed] > >> > > > > > > > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > > [Non-text portions of this message have been removed] > >> > > > > > > >> > > > > > >> > > > > [Non-text portions of this message have been removed] > >> > > > > > >> > > > > > >> > > > > > >> > > > > > >> > > > > > >> > > > > [Non-text portions of this message have been removed] > >> > > > > > >> > > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> > > [Non-text portions of this message have been removed] > >> > > > >> > > >> > > >> > > >> > >> [Non-text portions of this message have been removed] > >> > >> ------------------------------------ > >> > >> Yahoo! Groups Links > >> > >> > >> > > > > > > [Non-text portions of this message have been removed] > > ------------------------------------ > > Yahoo! Groups Links > > > [Non-text portions of this message have been removed]
2012-07-24 by tonezone020
Hi, I'd been following Old Crows instructions but didn't spot those two diagrams Thanks for that, especially the see thru. Re IC24 IC26 and IC34 - all pins 5s are linked. The buttons are back except Bank D,Patch 4 and 8 - probably new tacts ? Patches no longer storing at the moment. Found dry joint on IC30 Pin 7... I'll follow the +5 thru and then test again. Best, Tone --- In PolySix@yahoogroups.com, Jed Jorgensen <jed.jorgensen@...> wrote:
> > oops -- meant to post this too: > http://www.oldcrows.net/~oldcrow/synth/korg/polysix/crowlm367/klm367a_img.gif > > > On Tue, Jul 24, 2012 at 1:43 PM, Jed Jorgensen <jed.jorgensen@...>wrote: > > > Crow's schematic can be a big help: > > > > http://www.oldcrows.net/~oldcrow/synth/korg/polysix/crowlm367/klm367a_eagle_schem.gif > > > > I also track things using his 'see-through' board layout (from which the > > clones were derived). It is the same as the original (except the battery). > > > > j > > > > > > On Tue, Jul 24, 2012 at 1:35 PM, Peter Mörck <peterm@...>wrote: > > > >> ** > >> > >> > >> Damnit! > >> The 14042 below IC26 in the schematics is marked IC34, but I see now > >> there's > >> another IC34 down in the lower right. > >> Ok, add another typo and give it credit for some more confusion... > >> > >> > >> ----- Original Message ----- > >> From: "Jed Jorgensen" <jed.jorgensen@...> > >> To: <PolySix@yahoogroups.com> > >> Sent: Tuesday, July 24, 2012 9:55 PM > >> Subject: Re: [PolySix] Re: Polysix contact strip > >> > >> Is that a typo (34 vs 24)? > >> > >> IC26 pin 5 should go to IC24 pin 5. > >> > >> jed > >> > >> On Tue, Jul 24, 2012 at 12:21 PM, tonezone020 > >> <swamp.gigs@...>wrote: > >> > >> > ** > >> > >> > > >> > > >> > Hi Peter, > >> > > >> > I bridged IC26 pin 5 --> IC34 pin 5 and there's continuity to IC22 pin > >> 11 > >> > , however doing so knocked out the Bank A thru to Write switches and > >> when > >> > the I change patch switches, the sound played doesn't. > >> > > >> > Any pointers to where to look ? > >> > > >> > Thanks > >> > > >> > Tone > >> > > >> > > >> > --- In PolySix@yahoogroups.com, Peter Mörck <peterm@> wrote: > >> > > > >> > > Hi, > >> > > > >> > > Regarding IC26 pin 5 --> IC34 pin 5: > >> > > > >> > > Yes, they should be connected to eachother. > >> > > But more importantly, do any of them have contact with pin 11 of the > >> > 8048 (IC22) ? > >> > > IC26 and IC34 are latches, controlled by pin 11 of the 8048. > >> > > The fact that IC26 and IC34 have pins 5 connected to eachother doesn't > >> > necessarily mean any of them will work, unless they in turn are > >> connected > >> > to the 8048 pin 11. > >> > > So connection between IC22 pin 11 <--> IC26 pin 5 <--> IC34 pin 5 is > >> > what you need. > >> > > > >> > > BR, > >> > > Peter > >> > > > >> > > > >> > > > >> > > ----- Original Message ----- > >> > > From: tonezone020 > >> > > To: PolySix@yahoogroups.com > >> > > Sent: Tuesday, July 24, 2012 11:59 AM > >> > > Subject: [PolySix] Re: Polysix contact strip > >> > > > >> > > > >> > > > >> > > Erm, > >> > > > >> > > Correction - that should be IC24 p2, 1, 11, 10 that is connected to > >> IC32 > >> > p2, 1, 17, 16 > >> > > > >> > > Cheers, > >> > > > >> > > Tony > >> > > > >> > > --- In PolySix@yahoogroups.com, "tonezone020" <swamp.gigs@> wrote: > >> > > > > >> > > > Hi Don and Peter, > >> > > > > >> > > > Your messages have been very helpful consequently I've discovered > >> > anomalies elsewhere... > >> > > > > >> > > > IC26 p5 doesn't connect to IC34 p5 - should I bridge this ? > >> > > > > >> > > > IC26 to IC32 connections are all fine. > >> > > > > >> > > > Also I think there's a mistake in the schematics. Rather than IC34 > >> > connecting to IC32 it seems to be IC26 p2, 1, 11, 10 that is connected > >> to > >> > IC32 p2, 1, 17, 16 > >> > > > > >> > > > Regards, > >> > > > > >> > > > Tony > >> > > > > >> > > > > >> > > > --- In PolySix@yahoogroups.com, "backshall1" <backshall1@> wrote: > >> > > > > > >> > > > > Yes, there is an error in the schematics. Pin 5 is +5v, not pin 4. > >> > Pin 4 > >> > > > > really does go to pin 12 on the 8048. I just checked a clone board > >> > and an > >> > > > > old original KLM-367. They are the same. > >> > > > > > >> > > > > Don B. > >> > > > > > >> > > > > > >> > > > > > >> > > > > _____ > >> > > > > > >> > > > > From: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com] On > >> > Behalf Of > >> > > > > Peter Mörck > >> > > > > Sent: Monday, July 23, 2012 8:25 PM > >> > > > > To: PolySix@yahoogroups.com > >> > > > > Subject: Re: [PolySix] Re: Polysix contact strip > >> > > > > > >> > > > > > >> > > > > > >> > > > > > >> > > > > > >> > > > > You must be looking at the board layout drawing. > >> > > > > The schematics are different and have no "layers". They just show > >> > how it's > >> > > > > connected without actual physical constraints. > >> > > > > > >> > > > > Anyway, I just looked and pins 1,4,10,13,14 of IC31 are tied to > >> +5V > >> > :) > >> > > > > > >> > > > > By the way, > >> > > > > I assume there's an error in the schematics indicating pin 4 tied > >> to > >> > pin12 > >> > > > > of the 8048, as it's also tied to +5V. > >> > > > > Either that's pin 5 instead, or vice versa. > >> > > > > > >> > > > > IC31 is just a quad AND gate acting as a buffer. Each of the AND > >> > gates has > >> > > > > one of its inputs tied to +5V so whatever appeard on the other > >> input > >> > will > >> > > > > also appear on the output of that gate. > >> > > > > > >> > > > > The traces under IC31 are usually attacked by the battery acid > >> > though and it > >> > > > > is good if you do continuity testing around that area. > >> > > > > > >> > > > > BR, > >> > > > > Peter > >> > > > > > >> > > > > ----- Original Message ----- > >> > > > > From: tonezone020 > >> > > > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > >> > > > > Sent: Tuesday, July 24, 2012 1:45 AM > >> > > > > Subject: [PolySix] Re: Polysix contact strip > >> > > > > > >> > > > > Hi, > >> > > > > > >> > > > > Looking at the schematics it's hard to tell - it doesn't seem like > >> > there is > >> > > > > one for the underside of the board ... > >> > > > > > >> > > > > Regards, > >> > > > > > >> > > > > Tony > >> > > > > > >> > > > > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > >> , > >> > Peter > >> > > > > Mörck <peterm@> wrote: > >> > > > > > > >> > > > > > Just compare with the schematics? > >> > > > > > > >> > > > > > BR, > >> > > > > > Peter > >> > > > > > > >> > > > > > ----- Original Message ----- > >> > > > > > From: tonezone020 > >> > > > > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > >> > > > > > Sent: Tuesday, July 24, 2012 12:52 AM > >> > > > > > Subject: [PolySix] Re: Polysix contact strip > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > > Hi, > >> > > > > > > >> > > > > > Thanks for your message. > >> > > > > > > >> > > > > > I managed to sort the strips out - they had stretched, but with > >> a > >> > bit of > >> > > > > coaxing the keys are now working. > >> > > > > > > >> > > > > > Been slowly trying to fix the battery leak problem with a tiny > >> bit > >> > of > >> > > > > success and Old Crow's advice from his site. > >> > > > > > > >> > > > > > I discovered pin numbers 13 and 14 on IC31 are connected. Do you > >> > know if > >> > > > > this should be so? There seems to be a copper trace on the > >> > > > > underneath > >> > > > > circuitry. It also appears to be the same for IC30... > >> > > > > > > >> > > > > > Thanks, > >> > > > > > > >> > > > > > Tony > >> > > > > > > >> > > > > > --- In PolySix@yahoogroups.com <mailto: > >> PolySix%40yahoogroups.com> > >> > , > >> > > > > bastebraak <bastebraak@> wrote: > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > > Is the old one damaged or just not working well. I fixed the > >> > contacts on > >> > > > > my polysix with a paste i ordered online. > >> > > > > > > > >> > > > > > > > >> > > > > > > Verzonden vanaf Samsung Mobiletonezone020 <swamp.gigs@> > >> schreef: > >> > > > > > > Hi All, > >> > > > > > > > >> > > > > > > Does anyone know where I can get a couple of 6 bubble contact > >> > strips or > >> > > > > alternatives for my synth, preferably in the Uk ? > >> > > > > > > > >> > > > > > > Many thanks in advance, > >> > > > > > > > >> > > > > > > Tony > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > > ------------------------------------ > >> > > > > > > > >> > > > > > > Yahoo! Groups Links > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > > [Non-text portions of this message have been removed] > >> > > > > > > > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > > [Non-text portions of this message have been removed] > >> > > > > > > >> > > > > > >> > > > > [Non-text portions of this message have been removed] > >> > > > > > >> > > > > > >> > > > > > >> > > > > > >> > > > > > >> > > > > [Non-text portions of this message have been removed] > >> > > > > > >> > > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> > > [Non-text portions of this message have been removed] > >> > > > >> > > >> > > >> > > >> > >> [Non-text portions of this message have been removed] > >> > >> ------------------------------------ > >> > >> Yahoo! Groups Links > >> > >> > >> > > > > > > > [Non-text portions of this message have been removed] >
2012-07-24 by Jed Jorgensen
I don't believe IC34 should be directly connected to the others. Double check the schematics for that. J On Tue, Jul 24, 2012 at 2:26 PM, tonezone020 <swamp.gigs@googlemail.com>wrote: > ** > > > Hi, > > I'd been following Old Crows instructions but didn't spot those two > diagrams Thanks for that, especially the see thru. > > Re IC24 IC26 and IC34 - all pins 5s are linked. > > The buttons are back except Bank D,Patch 4 and 8 - probably new tacts ? > > Patches no longer storing at the moment. > > Found dry joint on IC30 Pin 7... > > I'll follow the +5 thru and then test again. > > Best, > > Tone > > > --- In PolySix@yahoogroups.com, Jed Jorgensen <jed.jorgensen@...> wrote: > > > > oops -- meant to post this too: > > > http://www.oldcrows.net/~oldcrow/synth/korg/polysix/crowlm367/klm367a_img.gif > > > > > > On Tue, Jul 24, 2012 at 1:43 PM, Jed Jorgensen <jed.jorgensen@...>wrote: > > > > > > Crow's schematic can be a big help: > > > > > > > http://www.oldcrows.net/~oldcrow/synth/korg/polysix/crowlm367/klm367a_eagle_schem.gif > > > > > > I also track things using his 'see-through' board layout (from which > the > > > clones were derived). It is the same as the original (except the > battery). > > > > > > j > > > > > > > > > On Tue, Jul 24, 2012 at 1:35 PM, Peter M�rck <peterm@...>wrote: > > > > > >> ** > > > >> > > >> > > >> Damnit! > > >> The 14042 below IC26 in the schematics is marked IC34, but I see now > > >> there's > > >> another IC34 down in the lower right. > > >> Ok, add another typo and give it credit for some more confusion... > > >> > > >> > > >> ----- Original Message ----- > > >> From: "Jed Jorgensen" <jed.jorgensen@...> > > >> To: <PolySix@yahoogroups.com> > > >> Sent: Tuesday, July 24, 2012 9:55 PM > > >> Subject: Re: [PolySix] Re: Polysix contact strip > > >> > > >> Is that a typo (34 vs 24)? > > >> > > >> IC26 pin 5 should go to IC24 pin 5. > > >> > > >> jed > > >> > > >> On Tue, Jul 24, 2012 at 12:21 PM, tonezone020 > > >> <swamp.gigs@...>wrote: > > > >> > > >> > ** > > >> > > >> > > > >> > > > >> > Hi Peter, > > >> > > > >> > I bridged IC26 pin 5 --> IC34 pin 5 and there's continuity to IC22 > pin > > >> 11 > > >> > , however doing so knocked out the Bank A thru to Write switches and > > >> when > > >> > the I change patch switches, the sound played doesn't. > > >> > > > >> > Any pointers to where to look ? > > >> > > > >> > Thanks > > >> > > > >> > Tone > > >> > > > >> > > > >> > --- In PolySix@yahoogroups.com, Peter M�rck <peterm@> wrote: > > >> > > > > >> > > Hi, > > >> > > > > >> > > Regarding IC26 pin 5 --> IC34 pin 5: > > >> > > > > >> > > Yes, they should be connected to eachother. > > >> > > But more importantly, do any of them have contact with pin 11 of > the > > >> > 8048 (IC22) ? > > >> > > IC26 and IC34 are latches, controlled by pin 11 of the 8048. > > >> > > The fact that IC26 and IC34 have pins 5 connected to eachother > doesn't > > >> > necessarily mean any of them will work, unless they in turn are > > >> connected > > >> > to the 8048 pin 11. > > >> > > So connection between IC22 pin 11 <--> IC26 pin 5 <--> IC34 pin 5 > is > > >> > what you need. > > >> > > > > >> > > BR, > > >> > > Peter > > >> > > > > >> > > > > >> > > > > >> > > ----- Original Message ----- > > >> > > From: tonezone020 > > >> > > To: PolySix@yahoogroups.com > > >> > > Sent: Tuesday, July 24, 2012 11:59 AM > > >> > > Subject: [PolySix] Re: Polysix contact strip > > >> > > > > >> > > > > >> > > > > >> > > Erm, > > >> > > > > >> > > Correction - that should be IC24 p2, 1, 11, 10 that is connected > to > > >> IC32 > > >> > p2, 1, 17, 16 > > >> > > > > >> > > Cheers, > > >> > > > > >> > > Tony > > >> > > > > >> > > --- In PolySix@yahoogroups.com, "tonezone020" <swamp.gigs@> > wrote: > > >> > > > > > >> > > > Hi Don and Peter, > > >> > > > > > >> > > > Your messages have been very helpful consequently I've > discovered > > >> > anomalies elsewhere... > > >> > > > > > >> > > > IC26 p5 doesn't connect to IC34 p5 - should I bridge this ? > > >> > > > > > >> > > > IC26 to IC32 connections are all fine. > > >> > > > > > >> > > > Also I think there's a mistake in the schematics. Rather than > IC34 > > >> > connecting to IC32 it seems to be IC26 p2, 1, 11, 10 that is > connected > > >> to > > >> > IC32 p2, 1, 17, 16 > > >> > > > > > >> > > > Regards, > > >> > > > > > >> > > > Tony > > >> > > > > > >> > > > > > >> > > > --- In PolySix@yahoogroups.com, "backshall1" <backshall1@> > wrote: > > >> > > > > > > >> > > > > Yes, there is an error in the schematics. Pin 5 is +5v, not > pin 4. > > >> > Pin 4 > > >> > > > > really does go to pin 12 on the 8048. I just checked a clone > board > > >> > and an > > >> > > > > old original KLM-367. They are the same. > > >> > > > > > > >> > > > > Don B. > > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > _____ > > >> > > > > > > >> > > > > From: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com] > On > > >> > Behalf Of > > >> > > > > Peter M�rck > > >> > > > > Sent: Monday, July 23, 2012 8:25 PM > > >> > > > > To: PolySix@yahoogroups.com > > >> > > > > Subject: Re: [PolySix] Re: Polysix contact strip > > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > You must be looking at the board layout drawing. > > >> > > > > The schematics are different and have no "layers". They just > show > > >> > how it's > > >> > > > > connected without actual physical constraints. > > >> > > > > > > >> > > > > Anyway, I just looked and pins 1,4,10,13,14 of IC31 are tied > to > > >> +5V > > >> > :) > > >> > > > > > > >> > > > > By the way, > > >> > > > > I assume there's an error in the schematics indicating pin 4 > tied > > >> to > > >> > pin12 > > >> > > > > of the 8048, as it's also tied to +5V. > > >> > > > > Either that's pin 5 instead, or vice versa. > > >> > > > > > > >> > > > > IC31 is just a quad AND gate acting as a buffer. Each of the > AND > > >> > gates has > > >> > > > > one of its inputs tied to +5V so whatever appeard on the other > > >> input > > >> > will > > >> > > > > also appear on the output of that gate. > > >> > > > > > > >> > > > > The traces under IC31 are usually attacked by the battery acid > > >> > though and it > > >> > > > > is good if you do continuity testing around that area. > > >> > > > > > > >> > > > > BR, > > >> > > > > Peter > > >> > > > > > > >> > > > > ----- Original Message ----- > > >> > > > > From: tonezone020 > > >> > > > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com > > > > >> > > > > Sent: Tuesday, July 24, 2012 1:45 AM > > >> > > > > Subject: [PolySix] Re: Polysix contact strip > > >> > > > > > > >> > > > > Hi, > > >> > > > > > > >> > > > > Looking at the schematics it's hard to tell - it doesn't seem > like > > >> > there is > > >> > > > > one for the underside of the board ... > > >> > > > > > > >> > > > > Regards, > > >> > > > > > > >> > > > > Tony > > >> > > > > > > >> > > > > --- In PolySix@yahoogroups.com <mailto: > PolySix%40yahoogroups.com> > > >> , > > >> > Peter > > >> > > > > M�rck <peterm@> wrote: > > >> > > > > > > > >> > > > > > Just compare with the schematics? > > >> > > > > > > > >> > > > > > BR, > > >> > > > > > Peter > > >> > > > > > > > >> > > > > > ----- Original Message ----- > > >> > > > > > From: tonezone020 > > >> > > > > > To: PolySix@yahoogroups.com <mailto: > PolySix%40yahoogroups.com> > > >> > > > > > Sent: Tuesday, July 24, 2012 12:52 AM > > >> > > > > > Subject: [PolySix] Re: Polysix contact strip > > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > Hi, > > >> > > > > > > > >> > > > > > Thanks for your message. > > >> > > > > > > > >> > > > > > I managed to sort the strips out - they had stretched, but > with > > >> a > > >> > bit of > > >> > > > > coaxing the keys are now working. > > >> > > > > > > > >> > > > > > Been slowly trying to fix the battery leak problem with a > tiny > > >> bit > > >> > of > > >> > > > > success and Old Crow's advice from his site. > > >> > > > > > > > >> > > > > > I discovered pin numbers 13 and 14 on IC31 are connected. > Do you > > >> > know if > > >> > > > > this should be so? There seems to be a copper trace on the > > >> > > > > underneath > > >> > > > > circuitry. It also appears to be the same for IC30... > > >> > > > > > > > >> > > > > > Thanks, > > >> > > > > > > > >> > > > > > Tony > > >> > > > > > > > >> > > > > > --- In PolySix@yahoogroups.com <mailto: > > >> PolySix%40yahoogroups.com> > > >> > , > > >> > > > > bastebraak <bastebraak@> wrote: > > >> > > > > > > > > >> > > > > > > > > >> > > > > > > > > >> > > > > > > Is the old one damaged or just not working well. I fixed > the > > >> > contacts on > > >> > > > > my polysix with a paste i ordered online. > > >> > > > > > > > > >> > > > > > > > > >> > > > > > > Verzonden vanaf Samsung Mobiletonezone020 <swamp.gigs@> > > >> schreef: > > >> > > > > > > Hi All, > > >> > > > > > > > > >> > > > > > > Does anyone know where I can get a couple of 6 bubble > contact > > >> > strips or > > >> > > > > alternatives for my synth, preferably in the Uk ? > > >> > > > > > > > > >> > > > > > > Many thanks in advance, > > >> > > > > > > > > >> > > > > > > Tony > > >> > > > > > > > > >> > > > > > > > > >> > > > > > > > > >> > > > > > > ------------------------------------ > > >> > > > > > > > > >> > > > > > > Yahoo! Groups Links > > >> > > > > > > > > >> > > > > > > > > >> > > > > > > > > >> > > > > > > > > >> > > > > > > > > >> > > > > > > [Non-text portions of this message have been removed] > > >> > > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > [Non-text portions of this message have been removed] > > >> > > > > > > > >> > > > > > > >> > > > > [Non-text portions of this message have been removed] > > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > [Non-text portions of this message have been removed] > > >> > > > > > > >> > > > > > >> > > > > >> > > > > >> > > > > >> > > > > >> > > > > >> > > [Non-text portions of this message have been removed] > > >> > > > > >> > > > >> > > > >> > > > >> > > >> [Non-text portions of this message have been removed] > > >> > > >> ------------------------------------ > > >> > > >> Yahoo! Groups Links > > >> > > >> > > >> > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > [Non-text portions of this message have been removed]
2012-07-24 by Jed Jorgensen
Specifically IC34 pin 5 should not be connected to IC26 & IC24 pin 5. On Tue, Jul 24, 2012 at 2:29 PM, Jed Jorgensen <jed.jorgensen@gmail.com>wrote: > I don't believe IC34 should be directly connected to the others. Double > check the schematics for that. > > J > > > On Tue, Jul 24, 2012 at 2:26 PM, tonezone020 <swamp.gigs@googlemail.com>wrote: > >> ** >> >> >> Hi, >> >> I'd been following Old Crows instructions but didn't spot those two >> diagrams Thanks for that, especially the see thru. >> >> Re IC24 IC26 and IC34 - all pins 5s are linked. >> >> The buttons are back except Bank D,Patch 4 and 8 - probably new tacts ? >> >> Patches no longer storing at the moment. >> >> Found dry joint on IC30 Pin 7... >> >> I'll follow the +5 thru and then test again. >> >> Best, >> >> Tone >> >> >> --- In PolySix@yahoogroups.com, Jed Jorgensen <jed.jorgensen@...> wrote: >> > >> > oops -- meant to post this too: >> > >> http://www.oldcrows.net/~oldcrow/synth/korg/polysix/crowlm367/klm367a_img.gif >> > >> > >> > On Tue, Jul 24, 2012 at 1:43 PM, Jed Jorgensen <jed.jorgensen@ >> ...>wrote: >> >> > >> > > Crow's schematic can be a big help: >> > > >> > > >> http://www.oldcrows.net/~oldcrow/synth/korg/polysix/crowlm367/klm367a_eagle_schem.gif >> > > >> > > I also track things using his 'see-through' board layout (from which >> the >> > > clones were derived). It is the same as the original (except the >> battery). >> > > >> > > j >> > > >> > > >> > > On Tue, Jul 24, 2012 at 1:35 PM, Peter M�rck <peterm@...>wrote: >> > > >> > >> ** >> >> > >> >> > >> >> > >> Damnit! >> > >> The 14042 below IC26 in the schematics is marked IC34, but I see now >> > >> there's >> > >> another IC34 down in the lower right. >> > >> Ok, add another typo and give it credit for some more confusion... >> > >> >> > >> >> > >> ----- Original Message ----- >> > >> From: "Jed Jorgensen" <jed.jorgensen@...> >> > >> To: <PolySix@yahoogroups.com> >> > >> Sent: Tuesday, July 24, 2012 9:55 PM >> > >> Subject: Re: [PolySix] Re: Polysix contact strip >> > >> >> > >> Is that a typo (34 vs 24)? >> > >> >> > >> IC26 pin 5 should go to IC24 pin 5. >> > >> >> > >> jed >> > >> >> > >> On Tue, Jul 24, 2012 at 12:21 PM, tonezone020 >> > >> <swamp.gigs@...>wrote: >> >> > >> >> > >> > ** >> > >> >> > >> > >> > >> > >> > >> > Hi Peter, >> > >> > >> > >> > I bridged IC26 pin 5 --> IC34 pin 5 and there's continuity to IC22 >> pin >> > >> 11 >> > >> > , however doing so knocked out the Bank A thru to Write switches >> and >> > >> when >> > >> > the I change patch switches, the sound played doesn't. >> > >> > >> > >> > Any pointers to where to look ? >> > >> > >> > >> > Thanks >> > >> > >> > >> > Tone >> > >> > >> > >> > >> > >> > --- In PolySix@yahoogroups.com, Peter M�rck <peterm@> wrote: >> > >> > > >> > >> > > Hi, >> > >> > > >> > >> > > Regarding IC26 pin 5 --> IC34 pin 5: >> > >> > > >> > >> > > Yes, they should be connected to eachother. >> > >> > > But more importantly, do any of them have contact with pin 11 of >> the >> > >> > 8048 (IC22) ? >> > >> > > IC26 and IC34 are latches, controlled by pin 11 of the 8048. >> > >> > > The fact that IC26 and IC34 have pins 5 connected to eachother >> doesn't >> > >> > necessarily mean any of them will work, unless they in turn are >> > >> connected >> > >> > to the 8048 pin 11. >> > >> > > So connection between IC22 pin 11 <--> IC26 pin 5 <--> IC34 pin >> 5 is >> > >> > what you need. >> > >> > > >> > >> > > BR, >> > >> > > Peter >> > >> > > >> > >> > > >> > >> > > >> > >> > > ----- Original Message ----- >> > >> > > From: tonezone020 >> > >> > > To: PolySix@yahoogroups.com >> > >> > > Sent: Tuesday, July 24, 2012 11:59 AM >> > >> > > Subject: [PolySix] Re: Polysix contact strip >> > >> > > >> > >> > > >> > >> > > >> > >> > > Erm, >> > >> > > >> > >> > > Correction - that should be IC24 p2, 1, 11, 10 that is connected >> to >> > >> IC32 >> > >> > p2, 1, 17, 16 >> > >> > > >> > >> > > Cheers, >> > >> > > >> > >> > > Tony >> > >> > > >> > >> > > --- In PolySix@yahoogroups.com, "tonezone020" <swamp.gigs@> >> wrote: >> > >> > > > >> > >> > > > Hi Don and Peter, >> > >> > > > >> > >> > > > Your messages have been very helpful consequently I've >> discovered >> > >> > anomalies elsewhere... >> > >> > > > >> > >> > > > IC26 p5 doesn't connect to IC34 p5 - should I bridge this ? >> > >> > > > >> > >> > > > IC26 to IC32 connections are all fine. >> > >> > > > >> > >> > > > Also I think there's a mistake in the schematics. Rather than >> IC34 >> > >> > connecting to IC32 it seems to be IC26 p2, 1, 11, 10 that is >> connected >> > >> to >> > >> > IC32 p2, 1, 17, 16 >> > >> > > > >> > >> > > > Regards, >> > >> > > > >> > >> > > > Tony >> > >> > > > >> > >> > > > >> > >> > > > --- In PolySix@yahoogroups.com, "backshall1" <backshall1@> >> wrote: >> > >> > > > > >> > >> > > > > Yes, there is an error in the schematics. Pin 5 is +5v, not >> pin 4. >> > >> > Pin 4 >> > >> > > > > really does go to pin 12 on the 8048. I just checked a clone >> board >> > >> > and an >> > >> > > > > old original KLM-367. They are the same. >> > >> > > > > >> > >> > > > > Don B. >> > >> > > > > >> > >> > > > > >> > >> > > > > >> > >> > > > > _____ >> > >> > > > > >> > >> > > > > From: PolySix@yahoogroups.com [mailto: >> PolySix@yahoogroups.com] On >> > >> > Behalf Of >> > >> > > > > Peter M�rck >> > >> > > > > Sent: Monday, July 23, 2012 8:25 PM >> > >> > > > > To: PolySix@yahoogroups.com >> > >> > > > > Subject: Re: [PolySix] Re: Polysix contact strip >> > >> > > > > >> > >> > > > > >> > >> > > > > >> > >> > > > > >> > >> > > > > >> > >> > > > > You must be looking at the board layout drawing. >> > >> > > > > The schematics are different and have no "layers". They just >> show >> > >> > how it's >> > >> > > > > connected without actual physical constraints. >> > >> > > > > >> > >> > > > > Anyway, I just looked and pins 1,4,10,13,14 of IC31 are tied >> to >> > >> +5V >> > >> > :) >> > >> > > > > >> > >> > > > > By the way, >> > >> > > > > I assume there's an error in the schematics indicating pin 4 >> tied >> > >> to >> > >> > pin12 >> > >> > > > > of the 8048, as it's also tied to +5V. >> > >> > > > > Either that's pin 5 instead, or vice versa. >> > >> > > > > >> > >> > > > > IC31 is just a quad AND gate acting as a buffer. Each of the >> AND >> > >> > gates has >> > >> > > > > one of its inputs tied to +5V so whatever appeard on the >> other >> > >> input >> > >> > will >> > >> > > > > also appear on the output of that gate. >> > >> > > > > >> > >> > > > > The traces under IC31 are usually attacked by the battery >> acid >> > >> > though and it >> > >> > > > > is good if you do continuity testing around that area. >> > >> > > > > >> > >> > > > > BR, >> > >> > > > > Peter >> > >> > > > > >> > >> > > > > ----- Original Message ----- >> > >> > > > > From: tonezone020 >> > >> > > > > To: PolySix@yahoogroups.com <mailto: >> PolySix%40yahoogroups.com> >> > >> > > > > Sent: Tuesday, July 24, 2012 1:45 AM >> > >> > > > > Subject: [PolySix] Re: Polysix contact strip >> > >> > > > > >> > >> > > > > Hi, >> > >> > > > > >> > >> > > > > Looking at the schematics it's hard to tell - it doesn't >> seem like >> > >> > there is >> > >> > > > > one for the underside of the board ... >> > >> > > > > >> > >> > > > > Regards, >> > >> > > > > >> > >> > > > > Tony >> > >> > > > > >> > >> > > > > --- In PolySix@yahoogroups.com <mailto: >> PolySix%40yahoogroups.com> >> > >> , >> > >> > Peter >> > >> > > > > M�rck <peterm@> wrote: >> > >> > > > > > >> > >> > > > > > Just compare with the schematics? >> > >> > > > > > >> > >> > > > > > BR, >> > >> > > > > > Peter >> > >> > > > > > >> > >> > > > > > ----- Original Message ----- >> > >> > > > > > From: tonezone020 >> > >> > > > > > To: PolySix@yahoogroups.com <mailto: >> PolySix%40yahoogroups.com> >> > >> > > > > > Sent: Tuesday, July 24, 2012 12:52 AM >> > >> > > > > > Subject: [PolySix] Re: Polysix contact strip >> > >> > > > > > >> > >> > > > > > >> > >> > > > > > >> > >> > > > > > Hi, >> > >> > > > > > >> > >> > > > > > Thanks for your message. >> > >> > > > > > >> > >> > > > > > I managed to sort the strips out - they had stretched, but >> with >> > >> a >> > >> > bit of >> > >> > > > > coaxing the keys are now working. >> > >> > > > > > >> > >> > > > > > Been slowly trying to fix the battery leak problem with a >> tiny >> > >> bit >> > >> > of >> > >> > > > > success and Old Crow's advice from his site. >> > >> > > > > > >> > >> > > > > > I discovered pin numbers 13 and 14 on IC31 are connected. >> Do you >> > >> > know if >> > >> > > > > this should be so? There seems to be a copper trace on the >> > >> > > > > underneath >> > >> > > > > circuitry. It also appears to be the same for IC30... >> > >> > > > > > >> > >> > > > > > Thanks, >> > >> > > > > > >> > >> > > > > > Tony >> > >> > > > > > >> > >> > > > > > --- In PolySix@yahoogroups.com <mailto: >> > >> PolySix%40yahoogroups.com> >> > >> > , >> > >> > > > > bastebraak <bastebraak@> wrote: >> > >> > > > > > > >> > >> > > > > > > >> > >> > > > > > > >> > >> > > > > > > Is the old one damaged or just not working well. I fixed >> the >> > >> > contacts on >> > >> > > > > my polysix with a paste i ordered online. >> > >> > > > > > > >> > >> > > > > > > >> > >> > > > > > > Verzonden vanaf Samsung Mobiletonezone020 <swamp.gigs@> >> > >> schreef: >> > >> > > > > > > Hi All, >> > >> > > > > > > >> > >> > > > > > > Does anyone know where I can get a couple of 6 bubble >> contact >> > >> > strips or >> > >> > > > > alternatives for my synth, preferably in the Uk ? >> > >> > > > > > > >> > >> > > > > > > Many thanks in advance, >> > >> > > > > > > >> > >> > > > > > > Tony >> > >> > > > > > > >> > >> > > > > > > >> > >> > > > > > > >> > >> > > > > > > ------------------------------------ >> > >> > > > > > > >> > >> > > > > > > Yahoo! Groups Links >> > >> > > > > > > >> > >> > > > > > > >> > >> > > > > > > >> > >> > > > > > > >> > >> > > > > > > >> > >> > > > > > > [Non-text portions of this message have been removed] >> > >> > > > > > > >> > >> > > > > > >> > >> > > > > > >> > >> > > > > > >> > >> > > > > > >> > >> > > > > > >> > >> > > > > > [Non-text portions of this message have been removed] >> > >> > > > > > >> > >> > > > > >> > >> > > > > [Non-text portions of this message have been removed] >> > >> > > > > >> > >> > > > > >> > >> > > > > >> > >> > > > > >> > >> > > > > >> > >> > > > > [Non-text portions of this message have been removed] >> > >> > > > > >> > >> > > > >> > >> > > >> > >> > > >> > >> > > >> > >> > > >> > >> > > >> > >> > > [Non-text portions of this message have been removed] >> > >> > > >> > >> > >> > >> > >> > >> > >> > >> >> > >> [Non-text portions of this message have been removed] >> > >> >> > >> ------------------------------------ >> > >> >> > >> Yahoo! Groups Links >> > >> >> > >> >> > >> >> > > >> > > >> > >> > >> > [Non-text portions of this message have been removed] >> > >> >> >> > > [Non-text portions of this message have been removed]
2012-07-24 by Peter Mörck
It may be, but it still has the same errors on KLM-367 we have just been discussing :) Thanks anyway. Looks like a good scan. BR, Peter
----- Original Message ----- From: "james meagher" <w.james.meagher@gmail.com> To: <PolySix@yahoogroups.com> Sent: Tuesday, July 24, 2012 11:22 PM Subject: Re: [PolySix] Re: Polysix contact strip I believe that this is the most clear, complete and up to date Polysix service manual on the web: http://www.synfo.nl/servicemanuals/Korg/POLYSIX_SERVICE_MANUAL.pdf Hope it helps! James On Tue, Jul 24, 2012 at 4:17 PM, Peter M\ufffdrck <peterm@sunsetselection.com>wrote: > ** > > > Oh, nice :) > Thanks for that. > > Right, now listen to Jed, he knows better ;) > Sorry for the confusion but I was only looking at the old scanned > schematics, and they're obviously full off mistakes... > > > BR, > Peter > > ----- Original Message ----- > From: "Jed Jorgensen" <jed.jorgensen@gmail.com> > To: <PolySix@yahoogroups.com> > Sent: Tuesday, July 24, 2012 10:43 PM > Subject: Re: [PolySix] Re: Polysix contact strip > > oops -- meant to post this too: > > http://www.oldcrows.net/~oldcrow/synth/korg/polysix/crowlm367/klm367a_img.gif > > On Tue, Jul 24, 2012 at 1:43 PM, Jed Jorgensen > <jed.jorgensen@gmail.com>wrote: > > > Crow's schematic can be a big help: > > > > > http://www.oldcrows.net/~oldcrow/synth/korg/polysix/crowlm367/klm367a_eagle_schem.gif > > > > I also track things using his 'see-through' board layout (from which the > > clones were derived). It is the same as the original (except the > battery). > > > > j > > > > > > On Tue, Jul 24, 2012 at 1:35 PM, Peter M\ufffdrck > > <peterm@sunsetselection.com>wrote: > > > >> ** > >> > >> > >> Damnit! > >> The 14042 below IC26 in the schematics is marked IC34, but I see now > >> there's > >> another IC34 down in the lower right. > >> Ok, add another typo and give it credit for some more confusion... > >> > >> > >> ----- Original Message ----- > >> From: "Jed Jorgensen" <jed.jorgensen@gmail.com> > >> To: <PolySix@yahoogroups.com> > >> Sent: Tuesday, July 24, 2012 9:55 PM > >> Subject: Re: [PolySix] Re: Polysix contact strip > >> > >> Is that a typo (34 vs 24)? > >> > >> IC26 pin 5 should go to IC24 pin 5. > >> > >> jed > >> > >> On Tue, Jul 24, 2012 at 12:21 PM, tonezone020 > >> <swamp.gigs@googlemail.com>wrote: > >> > >> > ** > >> > >> > > >> > > >> > Hi Peter, > >> > > >> > I bridged IC26 pin 5 --> IC34 pin 5 and there's continuity to IC22 > >> > pin > >> 11 > >> > , however doing so knocked out the Bank A thru to Write switches and > >> when > >> > the I change patch switches, the sound played doesn't. > >> > > >> > Any pointers to where to look ? > >> > > >> > Thanks > >> > > >> > Tone > >> > > >> > > >> > --- In PolySix@yahoogroups.com, Peter M\ufffdrck <peterm@...> wrote: > >> > > > >> > > Hi, > >> > > > >> > > Regarding IC26 pin 5 --> IC34 pin 5: > >> > > > >> > > Yes, they should be connected to eachother. > >> > > But more importantly, do any of them have contact with pin 11 of > >> > > the > >> > 8048 (IC22) ? > >> > > IC26 and IC34 are latches, controlled by pin 11 of the 8048. > >> > > The fact that IC26 and IC34 have pins 5 connected to eachother > >> > > doesn't > >> > necessarily mean any of them will work, unless they in turn are > >> connected > >> > to the 8048 pin 11. > >> > > So connection between IC22 pin 11 <--> IC26 pin 5 <--> IC34 pin 5 > >> > > is > >> > what you need. > >> > > > >> > > BR, > >> > > Peter > >> > > > >> > > > >> > > > >> > > ----- Original Message ----- > >> > > From: tonezone020 > >> > > To: PolySix@yahoogroups.com > >> > > Sent: Tuesday, July 24, 2012 11:59 AM > >> > > Subject: [PolySix] Re: Polysix contact strip > >> > > > >> > > > >> > > > >> > > Erm, > >> > > > >> > > Correction - that should be IC24 p2, 1, 11, 10 that is connected to > >> IC32 > >> > p2, 1, 17, 16 > >> > > > >> > > Cheers, > >> > > > >> > > Tony > >> > > > >> > > --- In PolySix@yahoogroups.com, "tonezone020" <swamp.gigs@> wrote: > >> > > > > >> > > > Hi Don and Peter, > >> > > > > >> > > > Your messages have been very helpful consequently I've discovered > >> > anomalies elsewhere... > >> > > > > >> > > > IC26 p5 doesn't connect to IC34 p5 - should I bridge this ? > >> > > > > >> > > > IC26 to IC32 connections are all fine. > >> > > > > >> > > > Also I think there's a mistake in the schematics. Rather than > >> > > > IC34 > >> > connecting to IC32 it seems to be IC26 p2, 1, 11, 10 that is > >> > connected > >> to > >> > IC32 p2, 1, 17, 16 > >> > > > > >> > > > Regards, > >> > > > > >> > > > Tony > >> > > > > >> > > > > >> > > > --- In PolySix@yahoogroups.com, "backshall1" <backshall1@> wrote: > >> > > > > > >> > > > > Yes, there is an error in the schematics. Pin 5 is +5v, not pin > >> > > > > 4. > >> > Pin 4 > >> > > > > really does go to pin 12 on the 8048. I just checked a clone > >> > > > > board > >> > and an > >> > > > > old original KLM-367. They are the same. > >> > > > > > >> > > > > Don B. > >> > > > > > >> > > > > > >> > > > > > >> > > > > _____ > >> > > > > > >> > > > > From: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com] > On > >> > Behalf Of > >> > > > > Peter M\ufffdrck > >> > > > > Sent: Monday, July 23, 2012 8:25 PM > >> > > > > To: PolySix@yahoogroups.com > >> > > > > Subject: Re: [PolySix] Re: Polysix contact strip > >> > > > > > >> > > > > > >> > > > > > >> > > > > > >> > > > > > >> > > > > You must be looking at the board layout drawing. > >> > > > > The schematics are different and have no "layers". They just > show > >> > how it's > >> > > > > connected without actual physical constraints. > >> > > > > > >> > > > > Anyway, I just looked and pins 1,4,10,13,14 of IC31 are tied to > >> +5V > >> > :) > >> > > > > > >> > > > > By the way, > >> > > > > I assume there's an error in the schematics indicating pin 4 > tied > >> to > >> > pin12 > >> > > > > of the 8048, as it's also tied to +5V. > >> > > > > Either that's pin 5 instead, or vice versa. > >> > > > > > >> > > > > IC31 is just a quad AND gate acting as a buffer. Each of the > >> > > > > AND > >> > gates has > >> > > > > one of its inputs tied to +5V so whatever appeard on the other > >> input > >> > will > >> > > > > also appear on the output of that gate. > >> > > > > > >> > > > > The traces under IC31 are usually attacked by the battery acid > >> > though and it > >> > > > > is good if you do continuity testing around that area. > >> > > > > > >> > > > > BR, > >> > > > > Peter > >> > > > > > >> > > > > ----- Original Message ----- > >> > > > > From: tonezone020 > >> > > > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > >> > > > > Sent: Tuesday, July 24, 2012 1:45 AM > >> > > > > Subject: [PolySix] Re: Polysix contact strip > >> > > > > > >> > > > > Hi, > >> > > > > > >> > > > > Looking at the schematics it's hard to tell - it doesn't seem > >> > > > > like > >> > there is > >> > > > > one for the underside of the board ... > >> > > > > > >> > > > > Regards, > >> > > > > > >> > > > > Tony > >> > > > > > >> > > > > --- In PolySix@yahoogroups.com <mailto: > PolySix%40yahoogroups.com> > >> , > >> > Peter > >> > > > > M\ufffdrck <peterm@> wrote: > >> > > > > > > >> > > > > > Just compare with the schematics? > >> > > > > > > >> > > > > > BR, > >> > > > > > Peter > >> > > > > > > >> > > > > > ----- Original Message ----- > >> > > > > > From: tonezone020 > >> > > > > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com > > > >> > > > > > Sent: Tuesday, July 24, 2012 12:52 AM > >> > > > > > Subject: [PolySix] Re: Polysix contact strip > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > > Hi, > >> > > > > > > >> > > > > > Thanks for your message. > >> > > > > > > >> > > > > > I managed to sort the strips out - they had stretched, but > with > >> a > >> > bit of > >> > > > > coaxing the keys are now working. > >> > > > > > > >> > > > > > Been slowly trying to fix the battery leak problem with a > >> > > > > > tiny > >> bit > >> > of > >> > > > > success and Old Crow's advice from his site. > >> > > > > > > >> > > > > > I discovered pin numbers 13 and 14 on IC31 are connected. Do > >> > > > > > you > >> > know if > >> > > > > this should be so? There seems to be a copper trace on the > >> > > > > underneath > >> > > > > circuitry. It also appears to be the same for IC30... > >> > > > > > > >> > > > > > Thanks, > >> > > > > > > >> > > > > > Tony > >> > > > > > > >> > > > > > --- In PolySix@yahoogroups.com <mailto: > >> PolySix%40yahoogroups.com> > >> > , > >> > > > > bastebraak <bastebraak@> wrote: > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > > Is the old one damaged or just not working well. I fixed > >> > > > > > > the > >> > contacts on > >> > > > > my polysix with a paste i ordered online. > >> > > > > > > > >> > > > > > > > >> > > > > > > Verzonden vanaf Samsung Mobiletonezone020 <swamp.gigs@> > >> schreef: > >> > > > > > > Hi All, > >> > > > > > > > >> > > > > > > Does anyone know where I can get a couple of 6 bubble > contact > >> > strips or > >> > > > > alternatives for my synth, preferably in the Uk ? > >> > > > > > > > >> > > > > > > Many thanks in advance, > >> > > > > > > > >> > > > > > > Tony > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > > ------------------------------------ > >> > > > > > > > >> > > > > > > Yahoo! Groups Links > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > > [Non-text portions of this message have been removed] > >> > > > > > > > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > > [Non-text portions of this message have been removed] > >> > > > > > > >> > > > > > >> > > > > [Non-text portions of this message have been removed] > >> > > > > > >> > > > > > >> > > > > > >> > > > > > >> > > > > > >> > > > > [Non-text portions of this message have been removed] > >> > > > > > >> > > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> > > [Non-text portions of this message have been removed] > >> > > > >> > > >> > > >> > > >> > >> [Non-text portions of this message have been removed] > >> > >> ------------------------------------ > >> > >> Yahoo! Groups Links > >> > >> > >> > > > > > > [Non-text portions of this message have been removed] > > ------------------------------------ > > Yahoo! Groups Links > > > -- C'est La Guerre Moving Pictures Inc. 364 Home Street Winnipeg, Manitoba R3G 1X4 (204) 918 9317 [Non-text portions of this message have been removed] ------------------------------------ Yahoo! Groups Links
2012-07-25 by tonezone020
Hi, Yes, I think the top IC34 could be IC24 re the scan. At the moment a lot of the synth seems to be working. The main problem area seems to be in saving patch changes. If I save any EG changes I can recall it. Sub Osc and Octave store too. Any other changes - MG, VCO, VCF, Effects and Key Assign Mode work but don't get stored. Any pointers as to what might be happening there ? Regards... --- In PolySix@yahoogroups.com, Peter Mörck <peterm@...> wrote:
> > It may be, but it still has the same errors on KLM-367 we have just been > discussing :) > Thanks anyway. Looks like a good scan. > > BR, > Peter > > ----- Original Message ----- > From: "james meagher" <w.james.meagher@...> > To: <PolySix@yahoogroups.com> > Sent: Tuesday, July 24, 2012 11:22 PM > Subject: Re: [PolySix] Re: Polysix contact strip > > > I believe that this is the most clear, complete and up to date Polysix > service manual on the web: > http://www.synfo.nl/servicemanuals/Korg/POLYSIX_SERVICE_MANUAL.pdf > > Hope it helps! > James > > > > On Tue, Jul 24, 2012 at 4:17 PM, Peter Mörck > <peterm@...>wrote: > > > ** > > > > > > Oh, nice :) > > Thanks for that. > > > > Right, now listen to Jed, he knows better ;) > > Sorry for the confusion but I was only looking at the old scanned > > schematics, and they're obviously full off mistakes... > > > > > > BR, > > Peter > > > > ----- Original Message ----- > > From: "Jed Jorgensen" <jed.jorgensen@...> > > To: <PolySix@yahoogroups.com> > > Sent: Tuesday, July 24, 2012 10:43 PM > > Subject: Re: [PolySix] Re: Polysix contact strip > > > > oops -- meant to post this too: > > > > http://www.oldcrows.net/~oldcrow/synth/korg/polysix/crowlm367/klm367a_img.gif > > > > On Tue, Jul 24, 2012 at 1:43 PM, Jed Jorgensen > > <jed.jorgensen@...>wrote: > > > > > Crow's schematic can be a big help: > > > > > > > > http://www.oldcrows.net/~oldcrow/synth/korg/polysix/crowlm367/klm367a_eagle_schem.gif > > > > > > I also track things using his 'see-through' board layout (from which the > > > clones were derived). It is the same as the original (except the > > battery). > > > > > > j > > > > > > > > > On Tue, Jul 24, 2012 at 1:35 PM, Peter Mörck > > > <peterm@...>wrote: > > > > > >> ** > > >> > > >> > > >> Damnit! > > >> The 14042 below IC26 in the schematics is marked IC34, but I see now > > >> there's > > >> another IC34 down in the lower right. > > >> Ok, add another typo and give it credit for some more confusion... > > >> > > >> > > >> ----- Original Message ----- > > >> From: "Jed Jorgensen" <jed.jorgensen@...> > > >> To: <PolySix@yahoogroups.com> > > >> Sent: Tuesday, July 24, 2012 9:55 PM > > >> Subject: Re: [PolySix] Re: Polysix contact strip > > >> > > >> Is that a typo (34 vs 24)? > > >> > > >> IC26 pin 5 should go to IC24 pin 5. > > >> > > >> jed > > >> > > >> On Tue, Jul 24, 2012 at 12:21 PM, tonezone020 > > >> <swamp.gigs@...>wrote: > > >> > > >> > ** > > >> > > >> > > > >> > > > >> > Hi Peter, > > >> > > > >> > I bridged IC26 pin 5 --> IC34 pin 5 and there's continuity to IC22 > > >> > pin > > >> 11 > > >> > , however doing so knocked out the Bank A thru to Write switches and > > >> when > > >> > the I change patch switches, the sound played doesn't. > > >> > > > >> > Any pointers to where to look ? > > >> > > > >> > Thanks > > >> > > > >> > Tone > > >> > > > >> > > > >> > --- In PolySix@yahoogroups.com, Peter Mörck <peterm@> wrote: > > >> > > > > >> > > Hi, > > >> > > > > >> > > Regarding IC26 pin 5 --> IC34 pin 5: > > >> > > > > >> > > Yes, they should be connected to eachother. > > >> > > But more importantly, do any of them have contact with pin 11 of > > >> > > the > > >> > 8048 (IC22) ? > > >> > > IC26 and IC34 are latches, controlled by pin 11 of the 8048. > > >> > > The fact that IC26 and IC34 have pins 5 connected to eachother > > >> > > doesn't > > >> > necessarily mean any of them will work, unless they in turn are > > >> connected > > >> > to the 8048 pin 11. > > >> > > So connection between IC22 pin 11 <--> IC26 pin 5 <--> IC34 pin 5 > > >> > > is > > >> > what you need. > > >> > > > > >> > > BR, > > >> > > Peter > > >> > > > > >> > > > > >> > > > > >> > > ----- Original Message ----- > > >> > > From: tonezone020 > > >> > > To: PolySix@yahoogroups.com > > >> > > Sent: Tuesday, July 24, 2012 11:59 AM > > >> > > Subject: [PolySix] Re: Polysix contact strip > > >> > > > > >> > > > > >> > > > > >> > > Erm, > > >> > > > > >> > > Correction - that should be IC24 p2, 1, 11, 10 that is connected to > > >> IC32 > > >> > p2, 1, 17, 16 > > >> > > > > >> > > Cheers, > > >> > > > > >> > > Tony > > >> > > > > >> > > --- In PolySix@yahoogroups.com, "tonezone020" <swamp.gigs@> wrote: > > >> > > > > > >> > > > Hi Don and Peter, > > >> > > > > > >> > > > Your messages have been very helpful consequently I've discovered > > >> > anomalies elsewhere... > > >> > > > > > >> > > > IC26 p5 doesn't connect to IC34 p5 - should I bridge this ? > > >> > > > > > >> > > > IC26 to IC32 connections are all fine. > > >> > > > > > >> > > > Also I think there's a mistake in the schematics. Rather than > > >> > > > IC34 > > >> > connecting to IC32 it seems to be IC26 p2, 1, 11, 10 that is > > >> > connected > > >> to > > >> > IC32 p2, 1, 17, 16 > > >> > > > > > >> > > > Regards, > > >> > > > > > >> > > > Tony > > >> > > > > > >> > > > > > >> > > > --- In PolySix@yahoogroups.com, "backshall1" <backshall1@> wrote: > > >> > > > > > > >> > > > > Yes, there is an error in the schematics. Pin 5 is +5v, not pin > > >> > > > > 4. > > >> > Pin 4 > > >> > > > > really does go to pin 12 on the 8048. I just checked a clone > > >> > > > > board > > >> > and an > > >> > > > > old original KLM-367. They are the same. > > >> > > > > > > >> > > > > Don B. > > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > _____ > > >> > > > > > > >> > > > > From: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com] > > On > > >> > Behalf Of > > >> > > > > Peter Mörck > > >> > > > > Sent: Monday, July 23, 2012 8:25 PM > > >> > > > > To: PolySix@yahoogroups.com > > >> > > > > Subject: Re: [PolySix] Re: Polysix contact strip > > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > You must be looking at the board layout drawing. > > >> > > > > The schematics are different and have no "layers". They just > > show > > >> > how it's > > >> > > > > connected without actual physical constraints. > > >> > > > > > > >> > > > > Anyway, I just looked and pins 1,4,10,13,14 of IC31 are tied to > > >> +5V > > >> > :) > > >> > > > > > > >> > > > > By the way, > > >> > > > > I assume there's an error in the schematics indicating pin 4 > > tied > > >> to > > >> > pin12 > > >> > > > > of the 8048, as it's also tied to +5V. > > >> > > > > Either that's pin 5 instead, or vice versa. > > >> > > > > > > >> > > > > IC31 is just a quad AND gate acting as a buffer. Each of the > > >> > > > > AND > > >> > gates has > > >> > > > > one of its inputs tied to +5V so whatever appeard on the other > > >> input > > >> > will > > >> > > > > also appear on the output of that gate. > > >> > > > > > > >> > > > > The traces under IC31 are usually attacked by the battery acid > > >> > though and it > > >> > > > > is good if you do continuity testing around that area. > > >> > > > > > > >> > > > > BR, > > >> > > > > Peter > > >> > > > > > > >> > > > > ----- Original Message ----- > > >> > > > > From: tonezone020 > > >> > > > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > > >> > > > > Sent: Tuesday, July 24, 2012 1:45 AM > > >> > > > > Subject: [PolySix] Re: Polysix contact strip > > >> > > > > > > >> > > > > Hi, > > >> > > > > > > >> > > > > Looking at the schematics it's hard to tell - it doesn't seem > > >> > > > > like > > >> > there is > > >> > > > > one for the underside of the board ... > > >> > > > > > > >> > > > > Regards, > > >> > > > > > > >> > > > > Tony > > >> > > > > > > >> > > > > --- In PolySix@yahoogroups.com <mailto: > > PolySix%40yahoogroups.com> > > >> , > > >> > Peter > > >> > > > > Mörck <peterm@> wrote: > > >> > > > > > > > >> > > > > > Just compare with the schematics? > > >> > > > > > > > >> > > > > > BR, > > >> > > > > > Peter > > >> > > > > > > > >> > > > > > ----- Original Message ----- > > >> > > > > > From: tonezone020 > > >> > > > > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com > > > > > >> > > > > > Sent: Tuesday, July 24, 2012 12:52 AM > > >> > > > > > Subject: [PolySix] Re: Polysix contact strip > > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > Hi, > > >> > > > > > > > >> > > > > > Thanks for your message. > > >> > > > > > > > >> > > > > > I managed to sort the strips out - they had stretched, but > > with > > >> a > > >> > bit of > > >> > > > > coaxing the keys are now working. > > >> > > > > > > > >> > > > > > Been slowly trying to fix the battery leak problem with a > > >> > > > > > tiny > > >> bit > > >> > of > > >> > > > > success and Old Crow's advice from his site. > > >> > > > > > > > >> > > > > > I discovered pin numbers 13 and 14 on IC31 are connected. Do > > >> > > > > > you > > >> > know if > > >> > > > > this should be so? There seems to be a copper trace on the > > >> > > > > underneath > > >> > > > > circuitry. It also appears to be the same for IC30... > > >> > > > > > > > >> > > > > > Thanks, > > >> > > > > > > > >> > > > > > Tony > > >> > > > > > > > >> > > > > > --- In PolySix@yahoogroups.com <mailto: > > >> PolySix%40yahoogroups.com> > > >> > , > > >> > > > > bastebraak <bastebraak@> wrote: > > >> > > > > > > > > >> > > > > > > > > >> > > > > > > > > >> > > > > > > Is the old one damaged or just not working well. I fixed > > >> > > > > > > the > > >> > contacts on > > >> > > > > my polysix with a paste i ordered online. > > >> > > > > > > > > >> > > > > > > > > >> > > > > > > Verzonden vanaf Samsung Mobiletonezone020 <swamp.gigs@> > > >> schreef: > > >> > > > > > > Hi All, > > >> > > > > > > > > >> > > > > > > Does anyone know where I can get a couple of 6 bubble > > contact > > >> > strips or > > >> > > > > alternatives for my synth, preferably in the Uk ? > > >> > > > > > > > > >> > > > > > > Many thanks in advance, > > >> > > > > > > > > >> > > > > > > Tony > > >> > > > > > > > > >> > > > > > > > > >> > > > > > > > > >> > > > > > > ------------------------------------ > > >> > > > > > > > > >> > > > > > > Yahoo! Groups Links > > >> > > > > > > > > >> > > > > > > > > >> > > > > > > > > >> > > > > > > > > >> > > > > > > > > >> > > > > > > [Non-text portions of this message have been removed] > > >> > > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > [Non-text portions of this message have been removed] > > >> > > > > > > > >> > > > > > > >> > > > > [Non-text portions of this message have been removed] > > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > [Non-text portions of this message have been removed] > > >> > > > > > > >> > > > > > >> > > > > >> > > > > >> > > > > >> > > > > >> > > > > >> > > [Non-text portions of this message have been removed] > > >> > > > > >> > > > >> > > > >> > > > >> > > >> [Non-text portions of this message have been removed] > > >> > > >> ------------------------------------ > > >> > > >> Yahoo! Groups Links > > >> > > >> > > >> > > > > > > > > > > [Non-text portions of this message have been removed] > > > > ------------------------------------ > > > > Yahoo! Groups Links > > > > > > > > > > -- > C'est La Guerre Moving Pictures Inc. > 364 Home Street > Winnipeg, Manitoba > R3G 1X4 > (204) 918 9317 > > > [Non-text portions of this message have been removed] > > > > ------------------------------------ > > Yahoo! Groups Links >
2012-07-25 by backshall1
Okay, I pulled out my paper copy of the schematic which has all the errors Ive noticed so far. I should have done this earlier instead of relying on the pdf file to answer questions. 1) On IC30,31, pin 5 in connected to +5v, not pin 4. 2) IC30 ground pin is pin 7, not pin 1. 3) The 14042 below IC26 is IC24, not IC34. 4) The capacitor connected between R28 and pin 6 of IC3 is C5, not C4. 5) The diode on pin 9 of IC29 is D13, not D12. 6) The diode on pin 15 of IC29 is D14, not D13. 7) The signal from pin 7 of IC14 is MG Level, not MG SPeed. 8) Capacitor C33 is connected to the collector of Q5, not the other side of R98. Those are the errors I have marked in red. There may be more changes on this sheet that I failed to highlight in red so they are not immediately visible. Don B. _____
From: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com] On Behalf Of tonezone020 Sent: Tuesday, July 24, 2012 9:01 PM To: PolySix@yahoogroups.com Subject: [PolySix] Re: Polysix contact strip Hi, Yes, I think the top IC34 could be IC24 re the scan. At the moment a lot of the synth seems to be working. The main problem area seems to be in saving patch changes. If I save any EG changes I can recall it. Sub Osc and Octave store too. Any other changes - MG, VCO, VCF, Effects and Key Assign Mode work but don't get stored. Any pointers as to what might be happening there ? Regards... --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> , Peter Mörck <peterm@...> wrote: > > It may be, but it still has the same errors on KLM-367 we have just been > discussing :) > Thanks anyway. Looks like a good scan. > > BR, > Peter > > ----- Original Message ----- > From: "james meagher" <w.james.meagher@...> > To: <PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > > Sent: Tuesday, July 24, 2012 11:22 PM > Subject: Re: [PolySix] Re: Polysix contact strip > > > I believe that this is the most clear, complete and up to date Polysix > service manual on the web: > http://www.synfo.nl/servicemanuals/Korg/POLYSIX_SERVICE_MANUAL.pdf > > Hope it helps! > James > > > > On Tue, Jul 24, 2012 at 4:17 PM, Peter Mörck > <peterm@...>wrote: > > > ** > > > > > > Oh, nice :) > > Thanks for that. > > > > Right, now listen to Jed, he knows better ;) > > Sorry for the confusion but I was only looking at the old scanned > > schematics, and they're obviously full off mistakes... > > > > > > BR, > > Peter > > > > ----- Original Message ----- > > From: "Jed Jorgensen" <jed.jorgensen@...> > > To: <PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > > > Sent: Tuesday, July 24, 2012 10:43 PM > > Subject: Re: [PolySix] Re: Polysix contact strip > > > > oops -- meant to post this too: > > > > http://www.oldcrows.net/~oldcrow/synth/korg/polysix/crowlm367/klm367a_img.gi f > > > > On Tue, Jul 24, 2012 at 1:43 PM, Jed Jorgensen > > <jed.jorgensen@...>wrote: > > > > > Crow's schematic can be a big help: > > > > > > > > http://www.oldcrows.net/~oldcrow/synth/korg/polysix/crowlm367/klm367a_eagle_ schem.gif > > > > > > I also track things using his 'see-through' board layout (from which the > > > clones were derived). It is the same as the original (except the > > battery). > > > > > > j > > > > > > > > > On Tue, Jul 24, 2012 at 1:35 PM, Peter Mörck > > > <peterm@...>wrote: > > > > > >> ** > > >> > > >> > > >> Damnit! > > >> The 14042 below IC26 in the schematics is marked IC34, but I see now > > >> there's > > >> another IC34 down in the lower right. > > >> Ok, add another typo and give it credit for some more confusion... > > >> > > >> > > >> ----- Original Message ----- > > >> From: "Jed Jorgensen" <jed.jorgensen@...> > > >> To: <PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > > > >> Sent: Tuesday, July 24, 2012 9:55 PM > > >> Subject: Re: [PolySix] Re: Polysix contact strip > > >> > > >> Is that a typo (34 vs 24)? > > >> > > >> IC26 pin 5 should go to IC24 pin 5. > > >> > > >> jed > > >> > > >> On Tue, Jul 24, 2012 at 12:21 PM, tonezone020 > > >> <swamp.gigs@...>wrote: > > >> > > >> > ** > > >> > > >> > > > >> > > > >> > Hi Peter, > > >> > > > >> > I bridged IC26 pin 5 --> IC34 pin 5 and there's continuity to IC22 > > >> > pin > > >> 11 > > >> > , however doing so knocked out the Bank A thru to Write switches and > > >> when > > >> > the I change patch switches, the sound played doesn't. > > >> > > > >> > Any pointers to where to look ? > > >> > > > >> > Thanks > > >> > > > >> > Tone > > >> > > > >> > > > >> > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> , Peter Mörck <peterm@> wrote: > > >> > > > > >> > > Hi, > > >> > > > > >> > > Regarding IC26 pin 5 --> IC34 pin 5: > > >> > > > > >> > > Yes, they should be connected to eachother. > > >> > > But more importantly, do any of them have contact with pin 11 of > > >> > > the > > >> > 8048 (IC22) ? > > >> > > IC26 and IC34 are latches, controlled by pin 11 of the 8048. > > >> > > The fact that IC26 and IC34 have pins 5 connected to eachother > > >> > > doesn't > > >> > necessarily mean any of them will work, unless they in turn are > > >> connected > > >> > to the 8048 pin 11. > > >> > > So connection between IC22 pin 11 <--> IC26 pin 5 <--> IC34 pin 5 > > >> > > is > > >> > what you need. > > >> > > > > >> > > BR, > > >> > > Peter > > >> > > > > >> > > > > >> > > > > >> > > ----- Original Message ----- > > >> > > From: tonezone020 > > >> > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > > >> > > Sent: Tuesday, July 24, 2012 11:59 AM > > >> > > Subject: [PolySix] Re: Polysix contact strip > > >> > > > > >> > > > > >> > > > > >> > > Erm, > > >> > > > > >> > > Correction - that should be IC24 p2, 1, 11, 10 that is connected to > > >> IC32 > > >> > p2, 1, 17, 16 > > >> > > > > >> > > Cheers, > > >> > > > > >> > > Tony > > >> > > > > >> > > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> , "tonezone020" <swamp.gigs@> wrote: > > >> > > > > > >> > > > Hi Don and Peter, > > >> > > > > > >> > > > Your messages have been very helpful consequently I've discovered > > >> > anomalies elsewhere... > > >> > > > > > >> > > > IC26 p5 doesn't connect to IC34 p5 - should I bridge this ? > > >> > > > > > >> > > > IC26 to IC32 connections are all fine. > > >> > > > > > >> > > > Also I think there's a mistake in the schematics. Rather than > > >> > > > IC34 > > >> > connecting to IC32 it seems to be IC26 p2, 1, 11, 10 that is > > >> > connected > > >> to > > >> > IC32 p2, 1, 17, 16 > > >> > > > > > >> > > > Regards, > > >> > > > > > >> > > > Tony > > >> > > > > > >> > > > > > >> > > > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> , "backshall1" <backshall1@> wrote: > > >> > > > > > > >> > > > > Yes, there is an error in the schematics. Pin 5 is +5v, not pin > > >> > > > > 4. > > >> > Pin 4 > > >> > > > > really does go to pin 12 on the 8048. I just checked a clone > > >> > > > > board > > >> > and an > > >> > > > > old original KLM-367. They are the same. > > >> > > > > > > >> > > > > Don B. > > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > _____ > > >> > > > > > > >> > > > > From: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> [mailto:PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> ] > > On > > >> > Behalf Of > > >> > > > > Peter Mörck > > >> > > > > Sent: Monday, July 23, 2012 8:25 PM > > >> > > > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > > >> > > > > Subject: Re: [PolySix] Re: Polysix contact strip > > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > You must be looking at the board layout drawing. > > >> > > > > The schematics are different and have no "layers". They just > > show > > >> > how it's > > >> > > > > connected without actual physical constraints. > > >> > > > > > > >> > > > > Anyway, I just looked and pins 1,4,10,13,14 of IC31 are tied to > > >> +5V > > >> > :) > > >> > > > > > > >> > > > > By the way, > > >> > > > > I assume there's an error in the schematics indicating pin 4 > > tied > > >> to > > >> > pin12 > > >> > > > > of the 8048, as it's also tied to +5V. > > >> > > > > Either that's pin 5 instead, or vice versa. > > >> > > > > > > >> > > > > IC31 is just a quad AND gate acting as a buffer. Each of the > > >> > > > > AND > > >> > gates has > > >> > > > > one of its inputs tied to +5V so whatever appeard on the other > > >> input > > >> > will > > >> > > > > also appear on the output of that gate. > > >> > > > > > > >> > > > > The traces under IC31 are usually attacked by the battery acid > > >> > though and it > > >> > > > > is good if you do continuity testing around that area. > > >> > > > > > > >> > > > > BR, > > >> > > > > Peter > > >> > > > > > > >> > > > > ----- Original Message ----- > > >> > > > > From: tonezone020 > > >> > > > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> <mailto:PolySix%40yahoogroups.com> > > >> > > > > Sent: Tuesday, July 24, 2012 1:45 AM > > >> > > > > Subject: [PolySix] Re: Polysix contact strip > > >> > > > > > > >> > > > > Hi, > > >> > > > > > > >> > > > > Looking at the schematics it's hard to tell - it doesn't seem > > >> > > > > like > > >> > there is > > >> > > > > one for the underside of the board ... > > >> > > > > > > >> > > > > Regards, > > >> > > > > > > >> > > > > Tony > > >> > > > > > > >> > > > > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> <mailto: > > PolySix%40yahoogroups.com> > > >> , > > >> > Peter > > >> > > > > Mörck <peterm@> wrote: > > >> > > > > > > > >> > > > > > Just compare with the schematics? > > >> > > > > > > > >> > > > > > BR, > > >> > > > > > Peter > > >> > > > > > > > >> > > > > > ----- Original Message ----- > > >> > > > > > From: tonezone020 > > >> > > > > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> <mailto:PolySix%40yahoogroups.com > > > > > >> > > > > > Sent: Tuesday, July 24, 2012 12:52 AM > > >> > > > > > Subject: [PolySix] Re: Polysix contact strip > > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > Hi, > > >> > > > > > > > >> > > > > > Thanks for your message. > > >> > > > > > > > >> > > > > > I managed to sort the strips out - they had stretched, but > > with > > >> a > > >> > bit of > > >> > > > > coaxing the keys are now working. > > >> > > > > > > > >> > > > > > Been slowly trying to fix the battery leak problem with a > > >> > > > > > tiny > > >> bit > > >> > of > > >> > > > > success and Old Crow's advice from his site. > > >> > > > > > > > >> > > > > > I discovered pin numbers 13 and 14 on IC31 are connected. Do > > >> > > > > > you > > >> > know if > > >> > > > > this should be so? There seems to be a copper trace on the > > >> > > > > underneath > > >> > > > > circuitry. It also appears to be the same for IC30... > > >> > > > > > > > >> > > > > > Thanks, > > >> > > > > > > > >> > > > > > Tony > > >> > > > > > > > >> > > > > > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> <mailto: > > >> PolySix%40yahoogroups.com> > > >> > , > > >> > > > > bastebraak <bastebraak@> wrote: > > >> > > > > > > > > >> > > > > > > > > >> > > > > > > > > >> > > > > > > Is the old one damaged or just not working well. I fixed > > >> > > > > > > the > > >> > contacts on > > >> > > > > my polysix with a paste i ordered online. > > >> > > > > > > > > >> > > > > > > > > >> > > > > > > Verzonden vanaf Samsung Mobiletonezone020 <swamp.gigs@> > > >> schreef: > > >> > > > > > > Hi All, > > >> > > > > > > > > >> > > > > > > Does anyone know where I can get a couple of 6 bubble > > contact > > >> > strips or > > >> > > > > alternatives for my synth, preferably in the Uk ? > > >> > > > > > > > > >> > > > > > > Many thanks in advance, > > >> > > > > > > > > >> > > > > > > Tony > > >> > > > > > > > > >> > > > > > > > > >> > > > > > > > > >> > > > > > > ------------------------------------ > > >> > > > > > > > > >> > > > > > > Yahoo! Groups Links > > >> > > > > > > > > >> > > > > > > > > >> > > > > > > > > >> > > > > > > > > >> > > > > > > > > >> > > > > > > [Non-text portions of this message have been removed] > > >> > > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > [Non-text portions of this message have been removed] > > >> > > > > > > > >> > > > > > > >> > > > > [Non-text portions of this message have been removed] > > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > [Non-text portions of this message have been removed] > > >> > > > > > > >> > > > > > >> > > > > >> > > > > >> > > > > >> > > > > >> > > > > >> > > [Non-text portions of this message have been removed] > > >> > > > > >> > > > >> > > > >> > > > >> > > >> [Non-text portions of this message have been removed] > > >> > > >> ------------------------------------ > > >> > > >> Yahoo! Groups Links > > >> > > >> > > >> > > > > > > > > > > [Non-text portions of this message have been removed] > > > > ------------------------------------ > > > > Yahoo! Groups Links > > > > > > > > > > -- > C'est La Guerre Moving Pictures Inc. > 364 Home Street > Winnipeg, Manitoba > R3G 1X4 > (204) 918 9317 > > > [Non-text portions of this message have been removed] > > > > ------------------------------------ > > Yahoo! Groups Links > [Non-text portions of this message have been removed]
2012-07-25 by w.james.meagher@gmail.com
Thanks Don, I was just thinking of posting if anyone had compiled a list of all the mistakes in the P6 SM ... but you beat me to it! Thanks a lot for this. I'm about to dig into my P6, but I don't have a ton of tech experience so mistakes in the SM can really set me back a while before I realize the source of the confusion. Cheers, James Sent from my iPhone On 2012-07-24, at 8:45 PM, "backshall1" <backshall1@bellsouth.net> wrote: > Okay, I pulled out my paper copy of the schematic which has all the errors > I’ve noticed so far. I should have done this earlier instead of relying on > the pdf file to answer questions. > > 1) On IC30,31, pin 5 in connected to +5v, not pin 4. > > 2) IC30 ground pin is pin 7, not pin 1. > > 3) The 14042 below IC26 is IC24, not IC34. > > 4) The capacitor connected between R28 and pin 6 of IC3 is C5, not C4. > > 5) The diode on pin 9 of IC29 is D13, not D12. > > 6) The diode on pin 15 of IC29 is D14, not D13. > > 7) The signal from pin 7 of IC14 is MG Level, not MG SPeed. > > 8) Capacitor C33 is connected to the collector of Q5, not the other side of > R98. > > Those are the errors I have marked in red. There may be more changes on this > sheet that I failed to highlight in red so they are not immediately visible. > > Don B. > > _____ > > From: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com] On Behalf Of > tonezone020 > Sent: Tuesday, July 24, 2012 9:01 PM > To: PolySix@yahoogroups.com > Subject: [PolySix] Re: Polysix contact strip > > Hi, > > Yes, I think the top IC34 could be IC24 re the scan. > > At the moment a lot of the synth seems to be working. The main problem area > seems to be in saving patch changes. If I save any EG changes I can recall > it. Sub Osc and Octave store too. > > Any other changes - MG, VCO, VCF, Effects and Key Assign Mode work but don't > get stored. > > Any pointers as to what might be happening there ? > > Regards... > > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> , Peter > Mörck <peterm@...> wrote: > > > > It may be, but it still has the same errors on KLM-367 we have just been > > discussing :) > > Thanks anyway. Looks like a good scan. > > > > BR, > > Peter > > > > ----- Original Message ----- > > From: "james meagher" <w.james.meagher@...> > > To: <PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > > > Sent: Tuesday, July 24, 2012 11:22 PM > > Subject: Re: [PolySix] Re: Polysix contact strip > > > > > > I believe that this is the most clear, complete and up to date Polysix > > service manual on the web: > > http://www.synfo.nl/servicemanuals/Korg/POLYSIX_SERVICE_MANUAL.pdf > > > > Hope it helps! > > James > > > > > > > > On Tue, Jul 24, 2012 at 4:17 PM, Peter Mörck > > <peterm@...>wrote: > > > > > ** > > > > > > > > > Oh, nice :) > > > Thanks for that. > > > > > > Right, now listen to Jed, he knows better ;) > > > Sorry for the confusion but I was only looking at the old scanned > > > schematics, and they're obviously full off mistakes... > > > > > > > > > BR, > > > Peter > > > > > > ----- Original Message ----- > > > From: "Jed Jorgensen" <jed.jorgensen@...> > > > To: <PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > > > > Sent: Tuesday, July 24, 2012 10:43 PM > > > Subject: Re: [PolySix] Re: Polysix contact strip > > > > > > oops -- meant to post this too: > > > > > > > http://www.oldcrows.net/~oldcrow/synth/korg/polysix/crowlm367/klm367a_img.gi > f > > > > > > On Tue, Jul 24, 2012 at 1:43 PM, Jed Jorgensen > > > <jed.jorgensen@...>wrote: > > > > > > > Crow's schematic can be a big help: > > > > > > > > > > > > http://www.oldcrows.net/~oldcrow/synth/korg/polysix/crowlm367/klm367a_eagle_ > schem.gif > > > > > > > > I also track things using his 'see-through' board layout (from which > the > > > > clones were derived). It is the same as the original (except the > > > battery). > > > > > > > > j > > > > > > > > > > > > On Tue, Jul 24, 2012 at 1:35 PM, Peter Mörck > > > > <peterm@...>wrote: > > > > > > > >> ** > > > >> > > > >> > > > >> Damnit! > > > >> The 14042 below IC26 in the schematics is marked IC34, but I see now > > > >> there's > > > >> another IC34 down in the lower right. > > > >> Ok, add another typo and give it credit for some more confusion... > > > >> > > > >> > > > >> ----- Original Message ----- > > > >> From: "Jed Jorgensen" <jed.jorgensen@...> > > > >> To: <PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > > > > >> Sent: Tuesday, July 24, 2012 9:55 PM > > > >> Subject: Re: [PolySix] Re: Polysix contact strip > > > >> > > > >> Is that a typo (34 vs 24)? > > > >> > > > >> IC26 pin 5 should go to IC24 pin 5. > > > >> > > > >> jed > > > >> > > > >> On Tue, Jul 24, 2012 at 12:21 PM, tonezone020 > > > >> <swamp.gigs@...>wrote: > > > >> > > > >> > ** > > > >> > > > >> > > > > >> > > > > >> > Hi Peter, > > > >> > > > > >> > I bridged IC26 pin 5 --> IC34 pin 5 and there's continuity to IC22 > > > >> > pin > > > >> 11 > > > >> > , however doing so knocked out the Bank A thru to Write switches > and > > > >> when > > > >> > the I change patch switches, the sound played doesn't. > > > >> > > > > >> > Any pointers to where to look ? > > > >> > > > > >> > Thanks > > > >> > > > > >> > Tone > > > >> > > > > >> > > > > >> > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> , > Peter Mörck <peterm@> wrote: > > > >> > > > > > >> > > Hi, > > > >> > > > > > >> > > Regarding IC26 pin 5 --> IC34 pin 5: > > > >> > > > > > >> > > Yes, they should be connected to eachother. > > > >> > > But more importantly, do any of them have contact with pin 11 of > > > >> > > the > > > >> > 8048 (IC22) ? > > > >> > > IC26 and IC34 are latches, controlled by pin 11 of the 8048. > > > >> > > The fact that IC26 and IC34 have pins 5 connected to eachother > > > >> > > doesn't > > > >> > necessarily mean any of them will work, unless they in turn are > > > >> connected > > > >> > to the 8048 pin 11. > > > >> > > So connection between IC22 pin 11 <--> IC26 pin 5 <--> IC34 pin 5 > > > > >> > > is > > > >> > what you need. > > > >> > > > > > >> > > BR, > > > >> > > Peter > > > >> > > > > > >> > > > > > >> > > > > > >> > > ----- Original Message ----- > > > >> > > From: tonezone020 > > > >> > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > > > >> > > Sent: Tuesday, July 24, 2012 11:59 AM > > > >> > > Subject: [PolySix] Re: Polysix contact strip > > > >> > > > > > >> > > > > > >> > > > > > >> > > Erm, > > > >> > > > > > >> > > Correction - that should be IC24 p2, 1, 11, 10 that is connected > to > > > >> IC32 > > > >> > p2, 1, 17, 16 > > > >> > > > > > >> > > Cheers, > > > >> > > > > > >> > > Tony > > > >> > > > > > >> > > --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > , "tonezone020" <swamp.gigs@> wrote: > > > >> > > > > > > >> > > > Hi Don and Peter, > > > >> > > > > > > >> > > > Your messages have been very helpful consequently I've > discovered > > > >> > anomalies elsewhere... > > > >> > > > > > > >> > > > IC26 p5 doesn't connect to IC34 p5 - should I bridge this ? > > > >> > > > > > > >> > > > IC26 to IC32 connections are all fine. > > > >> > > > > > > >> > > > Also I think there's a mistake in the schematics. Rather than > > > >> > > > IC34 > > > >> > connecting to IC32 it seems to be IC26 p2, 1, 11, 10 that is > > > >> > connected > > > >> to > > > >> > IC32 p2, 1, 17, 16 > > > >> > > > > > > >> > > > Regards, > > > >> > > > > > > >> > > > Tony > > > >> > > > > > > >> > > > > > > >> > > > --- In PolySix@yahoogroups.com > <mailto:PolySix%40yahoogroups.com> , "backshall1" <backshall1@> wrote: > > > >> > > > > > > > >> > > > > Yes, there is an error in the schematics. Pin 5 is +5v, not > pin > > > >> > > > > 4. > > > >> > Pin 4 > > > >> > > > > really does go to pin 12 on the 8048. I just checked a clone > > > >> > > > > board > > > >> > and an > > > >> > > > > old original KLM-367. They are the same. > > > >> > > > > > > > >> > > > > Don B. > > > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > _____ > > > >> > > > > > > > >> > > > > From: PolySix@yahoogroups.com > <mailto:PolySix%40yahoogroups.com> [mailto:PolySix@yahoogroups.com > <mailto:PolySix%40yahoogroups.com> ] > > > On > > > >> > Behalf Of > > > >> > > > > Peter Mörck > > > >> > > > > Sent: Monday, July 23, 2012 8:25 PM > > > >> > > > > To: PolySix@yahoogroups.com > <mailto:PolySix%40yahoogroups.com> > > > >> > > > > Subject: Re: [PolySix] Re: Polysix contact strip > > > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > You must be looking at the board layout drawing. > > > >> > > > > The schematics are different and have no "layers". They just > > > show > > > >> > how it's > > > >> > > > > connected without actual physical constraints. > > > >> > > > > > > > >> > > > > Anyway, I just looked and pins 1,4,10,13,14 of IC31 are tied > to > > > >> +5V > > > >> > :) > > > >> > > > > > > > >> > > > > By the way, > > > >> > > > > I assume there's an error in the schematics indicating pin 4 > > > tied > > > >> to > > > >> > pin12 > > > >> > > > > of the 8048, as it's also tied to +5V. > > > >> > > > > Either that's pin 5 instead, or vice versa. > > > >> > > > > > > > >> > > > > IC31 is just a quad AND gate acting as a buffer. Each of the > > > >> > > > > AND > > > >> > gates has > > > >> > > > > one of its inputs tied to +5V so whatever appeard on the > other > > > >> input > > > >> > will > > > >> > > > > also appear on the output of that gate. > > > >> > > > > > > > >> > > > > The traces under IC31 are usually attacked by the battery > acid > > > >> > though and it > > > >> > > > > is good if you do continuity testing around that area. > > > >> > > > > > > > >> > > > > BR, > > > >> > > > > Peter > > > >> > > > > > > > >> > > > > ----- Original Message ----- > > > >> > > > > From: tonezone020 > > > >> > > > > To: PolySix@yahoogroups.com > <mailto:PolySix%40yahoogroups.com> <mailto:PolySix%40yahoogroups.com> > > > >> > > > > Sent: Tuesday, July 24, 2012 1:45 AM > > > >> > > > > Subject: [PolySix] Re: Polysix contact strip > > > >> > > > > > > > >> > > > > Hi, > > > >> > > > > > > > >> > > > > Looking at the schemat > [Non-text portions of this message have been removed]
2012-07-25 by peterm
hi, If a setting works, as in you can create a sound and it works as expected, but somewhere between saving and recalling the patch something goes wrong, I bet you have problems with memory access. IC32 is the memory. Check for continuity between the IC22 pins 12-15 pins to IC32 pins 11-14 respectively. Those are the 4 databits. Also, check for continuity between pins 1,2,10,11 of both IC24+IC26 to IC32 pins 1,2,3,4,6,7,16,17 respectively. You have to look at the schematics to see which pins should connect to which. Also, check for continuity between IC22 pin 21 to IC32 pin 5. As well as IC22 pin 22 to IC32 pin 15. Those are the address bits. There's some more logic around the memory control lines but at least start with those :) BR, Peter ----------------------------------------
From: "tonezone020" <swamp.gigs@googlemail.com>
Sent: Wednesday, July 25, 2012 3:28 AM
To: PolySix@yahoogroups.com
Subject: [PolySix] Re: Polysix contact strip
Hi,
Yes, I think the top IC34 could be IC24 re the scan.
At the moment a lot of the synth seems to be working. The main problem area seems to be in saving patch changes. If I save any EG changes I can recall it. Sub Osc and Octave store too.
Any other changes - MG, VCO, VCF, Effects and Key Assign Mode work but don't get stored.
Any pointers as to what might be happening there ?
Regards...
--- In PolySix@yahoogroups.com, Peter Mörck <peterm@...> wrote:
>
> It may be, but it still has the same errors on KLM-367 we have just been
> discussing :)
> Thanks anyway. Looks like a good scan.
>
> BR,
> Peter
>
> ----- Original Message -----
> From: "james meagher" <w.james.meagher@...>
> To: <PolySix@yahoogroups.com>
> Sent: Tuesday, July 24, 2012 11:22 PM
> Subject: Re: [PolySix] Re: Polysix contact strip
>
>
> I believe that this is the most clear, complete and up to date Polysix
> service manual on the web:
> http://www.synfo.nl/servicemanuals/Korg/POLYSIX_SERVICE_MANUAL.pdf
>
> Hope it helps!
> James
>
>
>
> On Tue, Jul 24, 2012 at 4:17 PM, Peter Mörck
> <peterm@...>wrote:
>
> > **
> >
> >
> > Oh, nice :)
> > Thanks for that.
> >
> > Right, now listen to Jed, he knows better ;)
> > Sorry for the confusion but I was only looking at the old scanned
> > schematics, and they're obviously full off mistakes...
> >
> >
> > BR,
> > Peter
> >
> > ----- Original Message -----
> > From: "Jed Jorgensen" <jed.jorgensen@...>
> > To: <PolySix@yahoogroups.com>
> > Sent: Tuesday, July 24, 2012 10:43 PM
> > Subject: Re: [PolySix] Re: Polysix contact strip
> >
> > oops -- meant to post this too:
> >
> > http://www.oldcrows.net/~oldcrow/synth/korg/polysix/crowlm367/klm367a_img.gif
> >
> > On Tue, Jul 24, 2012 at 1:43 PM, Jed Jorgensen
> > <jed.jorgensen@...>wrote:
> >
> > > Crow's schematic can be a big help:
> > >
> > >
> > http://www.oldcrows.net/~oldcrow/synth/korg/polysix/crowlm367/klm367a_eagle_schem.gif
> > >
> > > I also track things using his 'see-through' board layout (from which the
> > > clones were derived). It is the same as the original (except the
> > battery).
> > >
> > > j
> > >
> > >
> > > On Tue, Jul 24, 2012 at 1:35 PM, Peter Mörck
> > > <peterm@...>wrote:
> > >
> > >> **
> > >>
> > >>
> > >> Damnit!
> > >> The 14042 below IC26 in the schematics is marked IC34, but I see now
> > >> there's
> > >> another IC34 down in the lower right.
> > >> Ok, add another typo and give it credit for some more confusion...
> > >>
> > >>
> > >> ----- Original Message -----
> > >> From: "Jed Jorgensen" <jed.jorgensen@...>
> > >> To: <PolySix@yahoogroups.com>
> > >> Sent: Tuesday, July 24, 2012 9:55 PM
> > >> Subject: Re: [PolySix] Re: Polysix contact strip
> > >>
> > >> Is that a typo (34 vs 24)?
> > >>
> > >> IC26 pin 5 should go to IC24 pin 5.
> > >>
> > >> jed
> > >>
> > >> On Tue, Jul 24, 2012 at 12:21 PM, tonezone020
> > >> <swamp.gigs@...>wrote:
> > >>
> > >> > **
> > >>
> > >> >
> > >> >
> > >> > Hi Peter,
> > >> >
> > >> > I bridged IC26 pin 5 --> IC34 pin 5 and there's continuity to IC22
> > >> > pin
> > >> 11
> > >> > , however doing so knocked out the Bank A thru to Write switches and
> > >> when
> > >> > the I change patch switches, the sound played doesn't.
> > >> >
> > >> > Any pointers to where to look ?
> > >> >
> > >> > Thanks
> > >> >
> > >> > Tone
> > >> >
> > >> >
> > >> > --- In PolySix@yahoogroups.com, Peter Mörck <peterm@> wrote:
> > >> > >
> > >> > > Hi,
> > >> > >
> > >> > > Regarding IC26 pin 5 --> IC34 pin 5:
> > >> > >
> > >> > > Yes, they should be connected to eachother.
> > >> > > But more importantly, do any of them have contact with pin 11 of
> > >> > > the
> > >> > 8048 (IC22) ?
> > >> > > IC26 and IC34 are latches, controlled by pin 11 of the 8048.
> > >> > > The fact that IC26 and IC34 have pins 5 connected to eachother
> > >> > > doesn't
> > >> > necessarily mean any of them will work, unless they in turn are
> > >> connected
> > >> > to the 8048 pin 11.
> > >> > > So connection between IC22 pin 11 <--> IC26 pin 5 <--> IC34 pin 5
> > >> > > is
> > >> > what you need.
> > >> > >
> > >> > > BR,
> > >> > > Peter
> > >> > >
> > >> > >
> > >> > >
> > >> > > ----- Original Message -----
> > >> > > From: tonezone020
> > >> > > To: PolySix@yahoogroups.com
> > >> > > Sent: Tuesday, July 24, 2012 11:59 AM
> > >> > > Subject: [PolySix] Re: Polysix contact strip
> > >> > >
> > >> > >
> > >> > >
> > >> > > Erm,
> > >> > >
> > >> > > Correction - that should be IC24 p2, 1, 11, 10 that is connected to
> > >> IC32
> > >> > p2, 1, 17, 16
> > >> > >
> > >> > > Cheers,
> > >> > >
> > >> > > Tony
> > >> > >
> > >> > > --- In PolySix@yahoogroups.com, "tonezone020" <swamp.gigs@> wrote:
> > >> > > >
> > >> > > > Hi Don and Peter,
> > >> > > >
> > >> > > > Your messages have been very helpful consequently I've discovered
> > >> > anomalies elsewhere...
> > >> > > >
> > >> > > > IC26 p5 doesn't connect to IC34 p5 - should I bridge this ?
> > >> > > >
> > >> > > > IC26 to IC32 connections are all fine.
> > >> > > >
> > >> > > > Also I think there's a mistake in the schematics. Rather than
> > >> > > > IC34
> > >> > connecting to IC32 it seems to be IC26 p2, 1, 11, 10 that is
> > >> > connected
> > >> to
> > >> > IC32 p2, 1, 17, 16
> > >> > > >
> > >> > > > Regards,
> > >> > > >
> > >> > > > Tony
> > >> > > >
> > >> > > >
> > >> > > > --- In PolySix@yahoogroups.com, "backshall1" <backshall1@> wrote:
> > >> > > > >
> > >> > > > > Yes, there is an error in the schematics. Pin 5 is +5v, not pin
> > >> > > > > 4.
> > >> > Pin 4
> > >> > > > > really does go to pin 12 on the 8048. I just checked a clone
> > >> > > > > board
> > >> > and an
> > >> > > > > old original KLM-367. They are the same.
> > >> > > > >
> > >> > > > > Don B.
> > >> > > > >
> > >> > > > >
> > >> > > > >
> > >> > > > > _____
> > >> > > > >
> > >> > > > > From: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com]
> > On
> > >> > Behalf Of
> > >> > > > > Peter Mörck
> > >> > > > > Sent: Monday, July 23, 2012 8:25 PM
> > >> > > > > To: PolySix@yahoogroups.com
> > >> > > > > Subject: Re: [PolySix] Re: Polysix contact strip
> > >> > > > >
> > >> > > > >
> > >> > > > >
> > >> > > > >
> > >> > > > >
> > >> > > > > You must be looking at the board layout drawing.
> > >> > > > > The schematics are different and have no "layers". They just
> > show
> > >> > how it's
> > >> > > > > connected without actual physical constraints.
> > >> > > > >
> > >> > > > > Anyway, I just looked and pins 1,4,10,13,14 of IC31 are tied to
> > >> +5V
> > >> > :)
> > >> > > > >
> > >> > > > > By the way,
> > >> > > > > I assume there's an error in the schematics indicating pin 4
> > tied
> > >> to
> > >> > pin12
> > >> > > > > of the 8048, as it's also tied to +5V.
> > >> > > > > Either that's pin 5 instead, or vice versa.
> > >> > > > >
> > >> > > > > IC31 is just a quad AND gate acting as a buffer. Each of the
> > >> > > > > AND
> > >> > gates has
> > >> > > > > one of its inputs tied to +5V so whatever appeard on the other
> > >> input
> > >> > will
> > >> > > > > also appear on the output of that gate.
> > >> > > > >
> > >> > > > > The traces under IC31 are usually attacked by the battery acid
> > >> > though and it
> > >> > > > > is good if you do continuity testing around that area.
> > >> > > > >
> > >> > > > > BR,
> > >> > > > > Peter
> > >> > > > >
> > >> > > > > ----- Original Message -----
> > >> > > > > From: tonezone020
> > >> > > > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com>
> > >> > > > > Sent: Tuesday, July 24, 2012 1:45 AM
> > >> > > > > Subject: [PolySix] Re: Polysix contact strip
> > >> > > > >
> > >> > > > > Hi,
> > >> > > > >
> > >> > > > > Looking at the schematics it's hard to tell - it doesn't seem
> > >> > > > > like
> > >> > there is
> > >> > > > > one for the underside of the board ...
> > >> > > > >
> > >> > > > > Regards,
> > >> > > > >
> > >> > > > > Tony
> > >> > > > >
> > >> > > > > --- In PolySix@yahoogroups.com <mailto:
> > PolySix%40yahoogroups.com>
> > >> ,
> > >> > Peter
> > >> > > > > Mörck <peterm@> wrote:
> > >> > > > > >
> > >> > > > > > Just compare with the schematics?
> > >> > > > > >
> > >> > > > > > BR,
> > >> > > > > > Peter
> > >> > > > > >
> > >> > > > > > ----- Original Message -----
> > >> > > > > > From: tonezone020
> > >> > > > > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com
> > >
> > >> > > > > > Sent: Tuesday, July 24, 2012 12:52 AM
> > >> > > > > > Subject: [PolySix] Re: Polysix contact strip
> > >> > > > > >
> > >> > > > > >
> > >> > > > > >
> > >> > > > > > Hi,
> > >> > > > > >
> > >> > > > > > Thanks for your message.
> > >> > > > > >
> > >> > > > > > I managed to sort the strips out - they had stretched, but
> > with
> > >> a
> > >> > bit of
> > >> > > > > coaxing the keys are now working.
> > >> > > > > >
> > >> > > > > > Been slowly trying to fix the battery leak problem with a
> > >> > > > > > tiny
> > >> bit
> > >> > of
> > >> > > > > success and Old Crow's advice from his site.
> > >> > > > > >
> > >> > > > > > I discovered pin numbers 13 and 14 on IC31 are connected. Do
> > >> > > > > > you
> > >> > know if
> > >> > > > > this should be so? There seems to be a copper trace on the
> > >> > > > > underneath
> > >> > > > > circuitry. It also appears to be the same for IC30...
> > >> > > > > >
> > >> > > > > > Thanks,
> > >> > > > > >
> > >> > > > > > Tony
> > >> > > > > >
> > >> > > > > > --- In PolySix@yahoogroups.com <mailto:
> > >> PolySix%40yahoogroups.com>
> > >> > ,
> > >> > > > > bastebraak <bastebraak@> wrote:
> > >> > > > > > >
> > >> > > > > > >
> > >> > > > > > >
> > >> > > > > > > Is the old one damaged or just not working well. I fixed
> > >> > > > > > > the
> > >> > contacts on
> > >> > > > > my polysix with a paste i ordered online.
> > >> > > > > > >
> > >> > > > > > >
> > >> > > > > > > Verzonden vanaf Samsung Mobiletonezone020 <swamp.gigs@>
> > >> schreef:
> > >> > > > > > > Hi All,
> > >> > > > > > >
> > >> > > > > > > Does anyone know where I can get a couple of 6 bubble
> > contact
> > >> > strips or
> > >> > > > > alternatives for my synth, preferably in the Uk ?
> > >> > > > > > >
> > >> > > > > > > Many thanks in advance,
> > >> > > > > > >
> > >> > > > > > > Tony
> > >> > > > > > >
> > >> > > > > > >
> > >> > > > > > >
> > >> > > > > > > ------------------------------------
> > >> > > > > > >
> > >> > > > > > > Yahoo! Groups Links
> > >> > > > > > >
> > >> > > > > > >
> > >> > > > > > >
> > >> > > > > > >
> > >> > > > > > >
> > >> > > > > > > [Non-text portions of this message have been removed]
> > >> > > > > > >
> > >> > > > > >
> > >> > > > > >
> > >> > > > > >
> > >> > > > > >
> > >> > > > > >
> > >> > > > > > [Non-text portions of this message have been removed]
> > >> > > > > >
> > >> > > > >
> > >> > > > > [Non-text portions of this message have been removed]
> > >> > > > >
> > >> > > > >
> > >> > > > >
> > >> > > > >
> > >> > > > >
> > >> > > > > [Non-text portions of this message have been removed]
> > >> > > > >
> > >> > > >
> > >> > >
> > >> > >
> > >> > >
> > >> > >
> > >> > >
> > >> > > [Non-text portions of this message have been removed]
> > >> > >
> > >> >
> > >> >
> > >> >
> > >>
> > >> [Non-text portions of this message have been removed]
> > >>
> > >> ------------------------------------
> > >>
> > >> Yahoo! Groups Links
> > >>
> > >>
> > >>
> > >
> > >
> >
> > [Non-text portions of this message have been removed]
> >
> > ------------------------------------
> >
> > Yahoo! Groups Links
> >
> >
> >
>
>
>
> --
> C'est La Guerre Moving Pictures Inc.
> 364 Home Street
> Winnipeg, Manitoba
> R3G 1X4
> (204) 918 9317
>
>
> [Non-text portions of this message have been removed]
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
[Non-text portions of this message have been removed]2012-07-25 by tonezone020
Hi, Followed those thru and all are good. One thing I noticed re saving MG parameters is in fact they do save, but are recalled at a higher value. Is this a calibration problem ? Thanks --- In PolySix@yahoogroups.com, "peterm" <peterm@...> wrote:
> > hi, > > If a setting works, as in you can create a sound and it works as expected, but somewhere between saving and recalling the patch something goes wrong, I bet you have problems with memory access. > IC32 is the memory. > > Check for continuity between the IC22 pins 12-15 pins to IC32 pins 11-14 respectively. > Those are the 4 databits. > > Also, check for continuity between pins 1,2,10,11 of both IC24+IC26 to IC32 pins 1,2,3,4,6,7,16,17 respectively. > You have to look at the schematics to see which pins should connect to which. > Also, check for continuity between IC22 pin 21 to IC32 pin 5. > As well as IC22 pin 22 to IC32 pin 15. > Those are the address bits. > > There's some more logic around the memory control lines but at least start with those :) > > BR, > Peter > > ---------------------------------------- > From: "tonezone020" <swamp.gigs@...> > Sent: Wednesday, July 25, 2012 3:28 AM > To: PolySix@yahoogroups.com > Subject: [PolySix] Re: Polysix contact strip > > > > Hi, > > Yes, I think the top IC34 could be IC24 re the scan. > > At the moment a lot of the synth seems to be working. The main problem area seems to be in saving patch changes. If I save any EG changes I can recall it. Sub Osc and Octave store too. > > Any other changes - MG, VCO, VCF, Effects and Key Assign Mode work but don't get stored. > > Any pointers as to what might be happening there ? > > Regards... > > --- In PolySix@yahoogroups.com, Peter M�rck <peterm@> wrote: > > > > It may be, but it still has the same errors on KLM-367 we have just been > > discussing :) > > Thanks anyway. Looks like a good scan. > > > > BR, > > Peter > > > > ----- Original Message ----- > > From: "james meagher" <w.james.meagher@> > > To: <PolySix@yahoogroups.com> > > Sent: Tuesday, July 24, 2012 11:22 PM > > Subject: Re: [PolySix] Re: Polysix contact strip > > > > > > I believe that this is the most clear, complete and up to date Polysix > > service manual on the web: > > http://www.synfo.nl/servicemanuals/Korg/POLYSIX_SERVICE_MANUAL.pdf > > > > Hope it helps! > > James > > > > > > > > On Tue, Jul 24, 2012 at 4:17 PM, Peter M�rck > > <peterm@>wrote: > > > > > ** > > > > > > > > > Oh, nice :) > > > Thanks for that. > > > > > > Right, now listen to Jed, he knows better ;) > > > Sorry for the confusion but I was only looking at the old scanned > > > schematics, and they're obviously full off mistakes... > > > > > > > > > BR, > > > Peter > > > > > > ----- Original Message ----- > > > From: "Jed Jorgensen" <jed.jorgensen@> > > > To: <PolySix@yahoogroups.com> > > > Sent: Tuesday, July 24, 2012 10:43 PM > > > Subject: Re: [PolySix] Re: Polysix contact strip > > > > > > oops -- meant to post this too: > > > > > > http://www.oldcrows.net/~oldcrow/synth/korg/polysix/crowlm367/klm367a_img.gif > > > > > > On Tue, Jul 24, 2012 at 1:43 PM, Jed Jorgensen > > > <jed.jorgensen@>wrote: > > > > > > > Crow's schematic can be a big help: > > > > > > > > > > > http://www.oldcrows.net/~oldcrow/synth/korg/polysix/crowlm367/klm367a_eagle_schem.gif > > > > > > > > I also track things using his 'see-through' board layout (from which the > > > > clones were derived). It is the same as the original (except the > > > battery). > > > > > > > > j > > > > > > > > > > > > On Tue, Jul 24, 2012 at 1:35 PM, Peter M�rck > > > > <peterm@>wrote: > > > > > > > >> ** > > > >> > > > >> > > > >> Damnit! > > > >> The 14042 below IC26 in the schematics is marked IC34, but I see now > > > >> there's > > > >> another IC34 down in the lower right. > > > >> Ok, add another typo and give it credit for some more confusion... > > > >> > > > >> > > > >> ----- Original Message ----- > > > >> From: "Jed Jorgensen" <jed.jorgensen@> > > > >> To: <PolySix@yahoogroups.com> > > > >> Sent: Tuesday, July 24, 2012 9:55 PM > > > >> Subject: Re: [PolySix] Re: Polysix contact strip > > > >> > > > >> Is that a typo (34 vs 24)? > > > >> > > > >> IC26 pin 5 should go to IC24 pin 5. > > > >> > > > >> jed > > > >> > > > >> On Tue, Jul 24, 2012 at 12:21 PM, tonezone020 > > > >> <swamp.gigs@>wrote: > > > >> > > > >> > ** > > > >> > > > >> > > > > >> > > > > >> > Hi Peter, > > > >> > > > > >> > I bridged IC26 pin 5 --> IC34 pin 5 and there's continuity to IC22 > > > >> > pin > > > >> 11 > > > >> > , however doing so knocked out the Bank A thru to Write switches and > > > >> when > > > >> > the I change patch switches, the sound played doesn't. > > > >> > > > > >> > Any pointers to where to look ? > > > >> > > > > >> > Thanks > > > >> > > > > >> > Tone > > > >> > > > > >> > > > > >> > --- In PolySix@yahoogroups.com, Peter M�rck <peterm@> wrote: > > > >> > > > > > >> > > Hi, > > > >> > > > > > >> > > Regarding IC26 pin 5 --> IC34 pin 5: > > > >> > > > > > >> > > Yes, they should be connected to eachother. > > > >> > > But more importantly, do any of them have contact with pin 11 of > > > >> > > the > > > >> > 8048 (IC22) ? > > > >> > > IC26 and IC34 are latches, controlled by pin 11 of the 8048. > > > >> > > The fact that IC26 and IC34 have pins 5 connected to eachother > > > >> > > doesn't > > > >> > necessarily mean any of them will work, unless they in turn are > > > >> connected > > > >> > to the 8048 pin 11. > > > >> > > So connection between IC22 pin 11 <--> IC26 pin 5 <--> IC34 pin 5 > > > >> > > is > > > >> > what you need. > > > >> > > > > > >> > > BR, > > > >> > > Peter > > > >> > > > > > >> > > > > > >> > > > > > >> > > ----- Original Message ----- > > > >> > > From: tonezone020 > > > >> > > To: PolySix@yahoogroups.com > > > >> > > Sent: Tuesday, July 24, 2012 11:59 AM > > > >> > > Subject: [PolySix] Re: Polysix contact strip > > > >> > > > > > >> > > > > > >> > > > > > >> > > Erm, > > > >> > > > > > >> > > Correction - that should be IC24 p2, 1, 11, 10 that is connected to > > > >> IC32 > > > >> > p2, 1, 17, 16 > > > >> > > > > > >> > > Cheers, > > > >> > > > > > >> > > Tony > > > >> > > > > > >> > > --- In PolySix@yahoogroups.com, "tonezone020" <swamp.gigs@> wrote: > > > >> > > > > > > >> > > > Hi Don and Peter, > > > >> > > > > > > >> > > > Your messages have been very helpful consequently I've discovered > > > >> > anomalies elsewhere... > > > >> > > > > > > >> > > > IC26 p5 doesn't connect to IC34 p5 - should I bridge this ? > > > >> > > > > > > >> > > > IC26 to IC32 connections are all fine. > > > >> > > > > > > >> > > > Also I think there's a mistake in the schematics. Rather than > > > >> > > > IC34 > > > >> > connecting to IC32 it seems to be IC26 p2, 1, 11, 10 that is > > > >> > connected > > > >> to > > > >> > IC32 p2, 1, 17, 16 > > > >> > > > > > > >> > > > Regards, > > > >> > > > > > > >> > > > Tony > > > >> > > > > > > >> > > > > > > >> > > > --- In PolySix@yahoogroups.com, "backshall1" <backshall1@> wrote: > > > >> > > > > > > > >> > > > > Yes, there is an error in the schematics. Pin 5 is +5v, not pin > > > >> > > > > 4. > > > >> > Pin 4 > > > >> > > > > really does go to pin 12 on the 8048. I just checked a clone > > > >> > > > > board > > > >> > and an > > > >> > > > > old original KLM-367. They are the same. > > > >> > > > > > > > >> > > > > Don B. > > > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > _____ > > > >> > > > > > > > >> > > > > From: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com] > > > On > > > >> > Behalf Of > > > >> > > > > Peter M�rck > > > >> > > > > Sent: Monday, July 23, 2012 8:25 PM > > > >> > > > > To: PolySix@yahoogroups.com > > > >> > > > > Subject: Re: [PolySix] Re: Polysix contact strip > > > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > You must be looking at the board layout drawing. > > > >> > > > > The schematics are different and have no "layers". They just > > > show > > > >> > how it's > > > >> > > > > connected without actual physical constraints. > > > >> > > > > > > > >> > > > > Anyway, I just looked and pins 1,4,10,13,14 of IC31 are tied to > > > >> +5V > > > >> > :) > > > >> > > > > > > > >> > > > > By the way, > > > >> > > > > I assume there's an error in the schematics indicating pin 4 > > > tied > > > >> to > > > >> > pin12 > > > >> > > > > of the 8048, as it's also tied to +5V. > > > >> > > > > Either that's pin 5 instead, or vice versa. > > > >> > > > > > > > >> > > > > IC31 is just a quad AND gate acting as a buffer. Each of the > > > >> > > > > AND > > > >> > gates has > > > >> > > > > one of its inputs tied to +5V so whatever appeard on the other > > > >> input > > > >> > will > > > >> > > > > also appear on the output of that gate. > > > >> > > > > > > > >> > > > > The traces under IC31 are usually attacked by the battery acid > > > >> > though and it > > > >> > > > > is good if you do continuity testing around that area. > > > >> > > > > > > > >> > > > > BR, > > > >> > > > > Peter > > > >> > > > > > > > >> > > > > ----- Original Message ----- > > > >> > > > > From: tonezone020 > > > >> > > > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > > > >> > > > > Sent: Tuesday, July 24, 2012 1:45 AM > > > >> > > > > Subject: [PolySix] Re: Polysix contact strip > > > >> > > > > > > > >> > > > > Hi, > > > >> > > > > > > > >> > > > > Looking at the schematics it's hard to tell - it doesn't seem > > > >> > > > > like > > > >> > there is > > > >> > > > > one for the underside of the board ... > > > >> > > > > > > > >> > > > > Regards, > > > >> > > > > > > > >> > > > > Tony > > > >> > > > > > > > >> > > > > --- In PolySix@yahoogroups.com <mailto: > > > PolySix%40yahoogroups.com> > > > >> , > > > >> > Peter > > > >> > > > > M�rck <peterm@> wrote: > > > >> > > > > > > > > >> > > > > > Just compare with the schematics? > > > >> > > > > > > > > >> > > > > > BR, > > > >> > > > > > Peter > > > >> > > > > > > > > >> > > > > > ----- Original Message ----- > > > >> > > > > > From: tonezone020 > > > >> > > > > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com > > > > > > > >> > > > > > Sent: Tuesday, July 24, 2012 12:52 AM > > > >> > > > > > Subject: [PolySix] Re: Polysix contact strip > > > >> > > > > > > > > >> > > > > > > > > >> > > > > > > > > >> > > > > > Hi, > > > >> > > > > > > > > >> > > > > > Thanks for your message. > > > >> > > > > > > > > >> > > > > > I managed to sort the strips out - they had stretched, but > > > with > > > >> a > > > >> > bit of > > > >> > > > > coaxing the keys are now working. > > > >> > > > > > > > > >> > > > > > Been slowly trying to fix the battery leak problem with a > > > >> > > > > > tiny > > > >> bit > > > >> > of > > > >> > > > > success and Old Crow's advice from his site. > > > >> > > > > > > > > >> > > > > > I discovered pin numbers 13 and 14 on IC31 are connected. Do > > > >> > > > > > you > > > >> > know if > > > >> > > > > this should be so? There seems to be a copper trace on the > > > >> > > > > underneath > > > >> > > > > circuitry. It also appears to be the same for IC30... > > > >> > > > > > > > > >> > > > > > Thanks, > > > >> > > > > > > > > >> > > > > > Tony > > > >> > > > > > > > > >> > > > > > --- In PolySix@yahoogroups.com <mailto: > > > >> PolySix%40yahoogroups.com> > > > >> > , > > > >> > > > > bastebraak <bastebraak@> wrote: > > > >> > > > > > > > > > >> > > > > > > > > > >> > > > > > > > > > >> > > > > > > Is the old one damaged or just not working well. I fixed > > > >> > > > > > > the > > > >> > contacts on > > > >> > > > > my polysix with a paste i ordered online. > > > >> > > > > > > > > > >> > > > > > > > > > >> > > > > > > Verzonden vanaf Samsung Mobiletonezone020 <swamp.gigs@> > > > >> schreef: > > > >> > > > > > > Hi All, > > > >> > > > > > > > > > >> > > > > > > Does anyone know where I can get a couple of 6 bubble > > > contact > > > >> > strips or > > > >> > > > > alternatives for my synth, preferably in the Uk ? > > > >> > > > > > > > > > >> > > > > > > Many thanks in advance, > > > >> > > > > > > > > > >> > > > > > > Tony > > > >> > > > > > > > > > >> > > > > > > > > > >> > > > > > > > > > >> > > > > > > ------------------------------------ > > > >> > > > > > > > > > >> > > > > > > Yahoo! Groups Links > > > >> > > > > > > > > > >> > > > > > > > > > >> > > > > > > > > > >> > > > > > > > > > >> > > > > > > > > > >> > > > > > > [Non-text portions of this message have been removed] > > > >> > > > > > > > > > >> > > > > > > > > >> > > > > > > > > >> > > > > > > > > >> > > > > > > > > >> > > > > > > > > >> > > > > > [Non-text portions of this message have been removed] > > > >> > > > > > > > > >> > > > > > > > >> > > > > [Non-text portions of this message have been removed] > > > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > [Non-text portions of this message have been removed] > > > >> > > > > > > > >> > > > > > > >> > > > > > >> > > > > > >> > > > > > >> > > > > > >> > > > > > >> > > [Non-text portions of this message have been removed] > > > >> > > > > > >> > > > > >> > > > > >> > > > > >> > > > >> [Non-text portions of this message have been removed] > > > >> > > > >> ------------------------------------ > > > >> > > > >> Yahoo! Groups Links > > > >> > > > >> > > > >> > > > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > ------------------------------------ > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > > > > -- > > C'est La Guerre Moving Pictures Inc. > > 364 Home Street > > Winnipeg, Manitoba > > R3G 1X4 > > (204) 918 9317 > > > > > > [Non-text portions of this message have been removed] > > > > > > > > ------------------------------------ > > > > Yahoo! Groups Links > > > > > > > [Non-text portions of this message have been removed] >
2013-02-16 by klosmon
I'm currently repairing a battery-damaged CPU board, and I've just about got everything working again -- except for the LFO bleedthrough into the VCO modulation circuit. I've repaired over three dozen of these things the past few years, and come across this problem repeatedly. I was able to solve it several times in the past by cutting the circuit board trace at CNO6-2 and at the outside end of R9, and joining them with a jumper (taking care to move C43 back into the circuit). This bypassed the parts of the circuit board that caused the LFO signal to bleed into the modulation circuit even when the mod wheel was fully down. In the case of this board, however, that procedure isn't helping -- there's still LFO modulation audible on the VCO (and visible on the scope at R9). I though it might be something from the other LFO mod path from the front panel mod switch (through ICs 1 and 2, finally through R11), but grounding that signal doesn't stop the mod effect. And, it's only appearing at the VCO mod circuit; no sign of it at the VCF or VCA. Thinking it might be something on the front panel, I swapped in a working CPU board, and the problem went away; obviously the fault is in the first CPU board. My eyes are starting to blur going over these schematics; has anyone here dealt with this problem successfully? If so, I'd love to hear about it. Thanks. ~GMM
2013-02-16 by Johannes Hausensteiner
Hi, What happens if you ground the signal CN06-2? I am not sure what you mean by "it is visible at R9". Does this mean that you can see the LFO wave at R9 (outside end) with the mod wheel turned down completely? What happens when you short the mod wheel wiper to GND? What happens when you remove KLM-369 / R16? Try cleaning the PCB. Check again that the cuts you made to the PCB traces completely separate. Good luck! Johannes
On 2013-02-16 07:30, klosmon wrote: > I'm currently repairing a battery-damaged CPU board, and I've just about > got everything working again -- except for the LFO bleedthrough into the > VCO modulation circuit. > > I've repaired over three dozen of these things the past few years, and > come across this problem repeatedly. > I was able to solve it several times in the past by cutting the circuit > board trace at CNO6-2 and at the outside end of R9, and joining them > with a jumper (taking care to move C43 back into the circuit). This > bypassed the parts of the circuit board that caused the LFO signal to > bleed into the modulation circuit even when the mod wheel was fully down. > > In the case of this board, however, that procedure isn't helping -- > there's still LFO modulation audible on the VCO (and visible on the > scope at R9). I though it might be something from the other LFO mod > path from the front panel mod switch (through ICs 1 and 2, finally > through R11), but grounding that signal doesn't stop the mod effect. > And, it's only appearing at the VCO mod circuit; no sign of it at the > VCF or VCA. > > Thinking it might be something on the front panel, I swapped in a > working CPU board, and the problem went away; obviously the fault is in > the first CPU board. > > My eyes are starting to blur going over these schematics; has anyone > here dealt with this problem successfully? > If so, I'd love to hear about it. > > Thanks. > ~GMM > > > ------------------------------------ > > Yahoo! Groups Links > > > >
2013-02-16 by Terje Winther
The problem is usually at the CPU board, and is caused by battery- leakage damage, just as you describe. There are lots of board traces that run across the board and through via-holes, and often I find that there is faults at the via-holes, and also where baord traces cross board sides through IC legs. Sometimes far from where the battery is. I just had a P6 in with the same problem. Swapped out some 40xx logic chips and repaired/strapped the traces, and the problem went away. I often find several 40xx chips failing to pass (some of) the digital control signals, and this can cause all kinds of strange behaviour from major failures to tiny details. Den 16. feb.. 2013 kl. 07.30 skrev klosmon: > I'm currently repairing a battery-damaged CPU board, and I've just > about > got everything working again -- except for the LFO bleedthrough into > the > VCO modulation circuit. > > I've repaired over three dozen of these things the past few years, and > come across this problem repeatedly. > I was able to solve it several times in the past by cutting the > circuit > board trace at CNO6-2 and at the outside end of R9, and joining them > with a jumper (taking care to move C43 back into the circuit). This > bypassed the parts of the circuit board that caused the LFO signal to > bleed into the modulation circuit even when the mod wheel was fully > down. > > In the case of this board, however, that procedure isn't helping -- > there's still LFO modulation audible on the VCO (and visible on the > scope at R9). I though it might be something from the other LFO mod > path from the front panel mod switch (through ICs 1 and 2, finally > through R11), but grounding that signal doesn't stop the mod effect. > And, it's only appearing at the VCO mod circuit; no sign of it at the > VCF or VCA. > > Thinking it might be something on the front panel, I swapped in a > working CPU board, and the problem went away; obviously the fault is > in > the first CPU board. > > My eyes are starting to blur going over these schematics; has anyone > here dealt with this problem successfully? > If so, I'd love to hear about it. > > Thanks. > ~GMM > Terje Winther terje.winther@wintherstormer.no http://www.wintherstormer.no/ [Non-text portions of this message have been removed]
2013-02-16 by backshall1
I've had a couple where I had to remove the connector header from the board, clean the bottom of the header and the board, then solder it back on. That was a real pain but it fixed the problem when doing the jumper didn't help. Apparently there was some leakage from pin 1 to pin 2 of CN06 underneath the header. Don Backshall _____
From: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com] On Behalf Of klosmon Sent: Saturday, February 16, 2013 1:31 AM To: PolySix@yahoogroups.com Subject: [PolySix] LFO problems again I'm currently repairing a battery-damaged CPU board, and I've just about got everything working again -- except for the LFO bleedthrough into the VCO modulation circuit. I've repaired over three dozen of these things the past few years, and come across this problem repeatedly. I was able to solve it several times in the past by cutting the circuit board trace at CNO6-2 and at the outside end of R9, and joining them with a jumper (taking care to move C43 back into the circuit). This bypassed the parts of the circuit board that caused the LFO signal to bleed into the modulation circuit even when the mod wheel was fully down. In the case of this board, however, that procedure isn't helping -- there's still LFO modulation audible on the VCO (and visible on the scope at R9). I though it might be something from the other LFO mod path from the front panel mod switch (through ICs 1 and 2, finally through R11), but grounding that signal doesn't stop the mod effect. And, it's only appearing at the VCO mod circuit; no sign of it at the VCF or VCA. Thinking it might be something on the front panel, I swapped in a working CPU board, and the problem went away; obviously the fault is in the first CPU board. My eyes are starting to blur going over these schematics; has anyone here dealt with this problem successfully? If so, I'd love to hear about it. Thanks. ~GMM [Non-text portions of this message have been removed]
2013-02-16 by klosmon
Hi, Johannes -- Replies inline. On 2/15/2013 10:49 PM, Johannes Hausensteiner wrote: > > Hi, > > What happens if you ground the signal CN06-2? > Shorting the signal at CNo6-2 defeats the mod signal. > > I am not sure what you mean by "it is visible at R9". Does this mean > that you can see the LFO wave at R9 (outside end) with the mod wheel > turned down completely? > Yes -- with the mod wheel down, LFO is showing up at the VCO mod opamp (but no where else). > > What happens when you short the mod wheel wiper to GND? > Nothing, unfortunately. > > What happens when you remove KLM-369 / R16? > No help. As stated previously, I swapped in a working CPU board and there was no problem; this would indicate to me that the front panel is OK, and the problem is on the CPU board. > > Try cleaning the PCB. > Yah, cleaned it with 99% alcohol. > > Check again that the cuts you made to the PCB traces completely > separate. > Did that; also disconnected the 1 and 2 wires from CN06 entirely and hardwired them to LFO out at R25 and VCO mod in at R9 -- no help. Will keep slogging on - might just have to disconnect the mod wheel on this one. Thanks. ~G > > Good luck! > > Johannes > > On 2013-02-16 07:30, klosmon wrote: > > I'm currently repairing a battery-damaged CPU board, and I've just about > > got everything working again -- except for the LFO bleedthrough into the > > VCO modulation circuit. > > > > I've repaired over three dozen of these things the past few years, and > > come across this problem repeatedly. > > I was able to solve it several times in the past by cutting the circuit > > board trace at CNO6-2 and at the outside end of R9, and joining them > > with a jumper (taking care to move C43 back into the circuit). This > > bypassed the parts of the circuit board that caused the LFO signal to > > bleed into the modulation circuit even when the mod wheel was fully > down. > > > > In the case of this board, however, that procedure isn't helping -- > > there's still LFO modulation audible on the VCO (and visible on the > > scope at R9). I though it might be something from the other LFO mod > > path from the front panel mod switch (through ICs 1 and 2, finally > > through R11), but grounding that signal doesn't stop the mod effect. > > And, it's only appearing at the VCO mod circuit; no sign of it at the > > VCF or VCA. > > > > Thinking it might be something on the front panel, I swapped in a > > working CPU board, and the problem went away; obviously the fault is in > > the first CPU board. > > > > My eyes are starting to blur going over these schematics; has anyone > > here dealt with this problem successfully? > > If so, I'd love to hear about it. > > > > Thanks. > > ~GMM > > > > > > ------------------------------------ > > > > Yahoo! Groups Links > > > > > > > > > > [Non-text portions of this message have been removed]
2013-02-16 by klosmon
Thanks -- will keep checking. ~G
On 2/16/2013 12:10 AM, Terje Winther wrote: > The problem is usually at the CPU board, and is caused by battery- > leakage damage, just as you describe. > There are lots of board traces that run across the board and through > via-holes, and often I find that there is faults at the via-holes, and > also where baord traces cross board sides through IC legs. Sometimes > far from where the battery is. > I just had a P6 in with the same problem. Swapped out some 40xx logic > chips and repaired/strapped the traces, and the problem went away. > I often find several 40xx chips failing to pass (some of) the digital > control signals, and this can cause all kinds of strange behaviour > from major failures to tiny details. > > > > Den 16. feb.. 2013 kl. 07.30 skrev klosmon: > >> I'm currently repairing a battery-damaged CPU board, and I've just >> about >> got everything working again -- except for the LFO bleedthrough into >> the >> VCO modulation circuit. >> >> I've repaired over three dozen of these things the past few years, and >> come across this problem repeatedly. >> I was able to solve it several times in the past by cutting the >> circuit >> board trace at CNO6-2 and at the outside end of R9, and joining them >> with a jumper (taking care to move C43 back into the circuit). This >> bypassed the parts of the circuit board that caused the LFO signal to >> bleed into the modulation circuit even when the mod wheel was fully >> down. >> >> In the case of this board, however, that procedure isn't helping -- >> there's still LFO modulation audible on the VCO (and visible on the >> scope at R9). I though it might be something from the other LFO mod >> path from the front panel mod switch (through ICs 1 and 2, finally >> through R11), but grounding that signal doesn't stop the mod effect. >> And, it's only appearing at the VCO mod circuit; no sign of it at the >> VCF or VCA. >> >> Thinking it might be something on the front panel, I swapped in a >> working CPU board, and the problem went away; obviously the fault is >> in >> the first CPU board. >> >> My eyes are starting to blur going over these schematics; has anyone >> here dealt with this problem successfully? >> If so, I'd love to hear about it. >> >> Thanks. >> ~GMM >> >
2013-02-16 by klosmon
On 2/16/2013 5:31 AM, backshall1 wrote: > > I've had a couple where I had to remove the connector header from the > board, > clean the bottom of the header and the board, then solder it back on. That > was a real pain but it fixed the problem when doing the jumper didn't > help. > Apparently there was some leakage from pin 1 to pin 2 of CN06 > underneath the > header. > > Don Backshall > On this unit, CN06 (and the area underneath) was so badly corroded that I removed it entirely and hardwired the data and address lines. The wires for Mod and LFO are wired directly to the board at R9 and R25; the traces from the CN06 area have been cut completely to remove any possible influence. ~G > > > _____ > > From: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > [mailto:PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com>] On > Behalf Of > klosmon > Sent: Saturday, February 16, 2013 1:31 AM > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > Subject: [PolySix] LFO problems again > > I'm currently repairing a battery-damaged CPU board, and I've just about > got everything working again -- except for the LFO bleedthrough into the > VCO modulation circuit. > > I've repaired over three dozen of these things the past few years, and > come across this problem repeatedly. > I was able to solve it several times in the past by cutting the circuit > board trace at CNO6-2 and at the outside end of R9, and joining them > with a jumper (taking care to move C43 back into the circuit). This > bypassed the parts of the circuit board that caused the LFO signal to > bleed into the modulation circuit even when the mod wheel was fully down. > > In the case of this board, however, that procedure isn't helping -- > there's still LFO modulation audible on the VCO (and visible on the > scope at R9). I though it might be something from the other LFO mod > path from the front panel mod switch (through ICs 1 and 2, finally > through R11), but grounding that signal doesn't stop the mod effect. > And, it's only appearing at the VCO mod circuit; no sign of it at the > VCF or VCA. > > Thinking it might be something on the front panel, I swapped in a > working CPU board, and the problem went away; obviously the fault is in > the first CPU board. > > My eyes are starting to blur going over these schematics; has anyone > here dealt with this problem successfully? > If so, I'd love to hear about it. > > Thanks. > ~GMM > > [Non-text portions of this message have been removed] > > [Non-text portions of this message have been removed]
2013-02-16 by backshall1
Man, there's a good candidate for a clone board. Are you sure you want to continue with this thing? Has the old trace been cut away at both ends, so it doesn't come near R9 anymore? Has IC8 been removed, the area cleaned, and replaced with a new socket and chip? You really are running out of possibilities here. Don B. _____
From: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com] On Behalf Of klosmon Sent: Saturday, February 16, 2013 12:38 PM To: PolySix@yahoogroups.com Subject: Re: [PolySix] LFO problems again On 2/16/2013 5:31 AM, backshall1 wrote: > > I've had a couple where I had to remove the connector header from the > board, > clean the bottom of the header and the board, then solder it back on. That > was a real pain but it fixed the problem when doing the jumper didn't > help. > Apparently there was some leakage from pin 1 to pin 2 of CN06 > underneath the > header. > > Don Backshall > On this unit, CN06 (and the area underneath) was so badly corroded that I removed it entirely and hardwired the data and address lines. The wires for Mod and LFO are wired directly to the board at R9 and R25; the traces from the CN06 area have been cut completely to remove any possible influence. ~G > > > _____ > > From: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > [mailto:PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> ] On > Behalf Of > klosmon > Sent: Saturday, February 16, 2013 1:31 AM > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > Subject: [PolySix] LFO problems again > > I'm currently repairing a battery-damaged CPU board, and I've just about > got everything working again -- except for the LFO bleedthrough into the > VCO modulation circuit. > > I've repaired over three dozen of these things the past few years, and > come across this problem repeatedly. > I was able to solve it several times in the past by cutting the circuit > board trace at CNO6-2 and at the outside end of R9, and joining them > with a jumper (taking care to move C43 back into the circuit). This > bypassed the parts of the circuit board that caused the LFO signal to > bleed into the modulation circuit even when the mod wheel was fully down. > > In the case of this board, however, that procedure isn't helping -- > there's still LFO modulation audible on the VCO (and visible on the > scope at R9). I though it might be something from the other LFO mod > path from the front panel mod switch (through ICs 1 and 2, finally > through R11), but grounding that signal doesn't stop the mod effect. > And, it's only appearing at the VCO mod circuit; no sign of it at the > VCF or VCA. > > Thinking it might be something on the front panel, I swapped in a > working CPU board, and the problem went away; obviously the fault is in > the first CPU board. > > My eyes are starting to blur going over these schematics; has anyone > here dealt with this problem successfully? > If so, I'd love to hear about it. > > Thanks. > ~GMM > > [Non-text portions of this message have been removed] > > [Non-text portions of this message have been removed] [Non-text portions of this message have been removed]
2013-02-16 by klosmon
On 2/16/2013 10:37 AM, backshall1 wrote: > > Man, there's a good candidate for a clone board. > Yah, but the customer doesn't want it. > > Are you sure you want to > continue with this thing? Has the old trace been cut away at both ends, so > it doesn't come near R9 anymore? > Yes. > Has IC8 been removed, the area cleaned, and > replaced with a new socket and chip? > Haven't tried that yet -- I'm putting the whole thing aside until Monday, at which point I'll start over & see what I missed. > > You really are running out of > possibilities here. > Yeah, bailing is starting to look attractive. Thanks. ~G > > Don B. > > _____ > > From: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > [mailto:PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com>] On > Behalf Of > klosmon > Sent: Saturday, February 16, 2013 12:38 PM > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > Subject: Re: [PolySix] LFO problems again > > On 2/16/2013 5:31 AM, backshall1 wrote: > > > > I've had a couple where I had to remove the connector header from the > > board, > > clean the bottom of the header and the board, then solder it back > on. That > > was a real pain but it fixed the problem when doing the jumper didn't > > help. > > Apparently there was some leakage from pin 1 to pin 2 of CN06 > > underneath the > > header. > > > > Don Backshall > > > On this unit, CN06 (and the area underneath) was so badly corroded that > I removed it entirely and hardwired the data and address lines. The > wires for Mod and LFO are wired directly to the board at R9 and R25; > the traces from the CN06 area have been cut completely to remove any > possible influence. > > ~G > > > > > > _____ > > > > From: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > > [mailto:PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> ] On > > Behalf Of > > klosmon > > Sent: Saturday, February 16, 2013 1:31 AM > > To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> > > Subject: [PolySix] LFO problems again > > > > I'm currently repairing a battery-damaged CPU board, and I've just about > > got everything working again -- except for the LFO bleedthrough into the > > VCO modulation circuit. > > > > I've repaired over three dozen of these things the past few years, and > > come across this problem repeatedly. > > I was able to solve it several times in the past by cutting the circuit > > board trace at CNO6-2 and at the outside end of R9, and joining them > > with a jumper (taking care to move C43 back into the circuit). This > > bypassed the parts of the circuit board that caused the LFO signal to > > bleed into the modulation circuit even when the mod wheel was fully > down. > > > > In the case of this board, however, that procedure isn't helping -- > > there's still LFO modulation audible on the VCO (and visible on the > > scope at R9). I though it might be something from the other LFO mod > > path from the front panel mod switch (through ICs 1 and 2, finally > > through R11), but grounding that signal doesn't stop the mod effect. > > And, it's only appearing at the VCO mod circuit; no sign of it at the > > VCF or VCA. > > > > Thinking it might be something on the front panel, I swapped in a > > working CPU board, and the problem went away; obviously the fault is in > > the first CPU board. > > > > My eyes are starting to blur going over these schematics; has anyone > > here dealt with this problem successfully? > > If so, I'd love to hear about it. > > > > Thanks. > > ~GMM > > > > [Non-text portions of this message have been removed] > > > > > > [Non-text portions of this message have been removed] > > [Non-text portions of this message have been removed] > > [Non-text portions of this message have been removed]
2013-02-17 by Malte Rogacki
If I may add to this: I recently had a similar problem, but the culprit wasn't the connector on KLM367; the problem was the connector on KLM369. Cleaning that one got rid of the bleedthrough. The LFO signal from the KLM367 to the control panel and the wheels and the return signal from the wheel are on adjacent pins in this connector. At 8:31 Uhr -0500 16.02.2013, backshall1 wrote:
> I've had a couple where I had to remove the connector header from the board, > clean the bottom of the header and the board, then solder it back on. That > was a real pain but it fixed the problem when doing the jumper didn't help. > Apparently there was some leakage from pin 1 to pin 2 of CN06 underneath the > header.