Discussion about the Korg PolySix synthesizer

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]
> > >> > > > >
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> > >> > >
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> > >> > >
> > >> >
> > >> >
> > >> >
> > >>
> > >> [Non-text portions of this message have been removed]
> > >>
> > >> ------------------------------------
> > >>
> > >> Yahoo! Groups Links
> > >>
> > >>
> > >>
> > >
> > >
> >
> >
> > [Non-text portions of this message have been removed]
> >
>
>  
>


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