Discussion about the Korg PolySix synthesizer

Thanks Stefan
I'll check it according to your suggestion.
I'll forward the results.
Best regards
Jos\ufffd
Portugal


----- Original Message ----- 
From: "Stefan Rinass" <st@rinass.de>
To: <PolySix@yahoogroups.com>
Sent: Friday, March 12, 2004 12:48 AM
Subject: Re: [PolySix] Re: Poly 61 in troubles....


> Hi Jos\ufffd,
>
> i mean the Oscillator which is connected to the 8048/8049 CPU directly
> (not the Oscillator Board). It must look like that:
>
> www.phasereffect.com/img/osc1.jpg   (Picture was taken from Oldcrows,
> sorry, i don\ufffdt have a Photo of my KLM\ufffds nor a Camera at the moment).
>
> My opinion is: If the "PS61" message is really -not- generated by the
> CPU, then it could be possible that the CPU doesn\ufffdt work cause of this
> component.
>
> Stef
>
>
> Jos\ufffd Pereira wrote:
>
> >Hi Stefan
> >Thanks for your answer.
> >Please write in english.
> >Automatic translators aren't very good, eheheh...I prefer to deal with my
> >english!
> >Best regards
> >Jos\ufffd
> >portugal
> >
> >
> >----- Original Message ----- 
> >From: "Stefan Rinass" <st@rinass.de>
> >To: <PolySix@yahoogroups.com>
> >Sent: Tuesday, March 09, 2004 11:17 PM
> >Subject: Re: [PolySix] Re: Poly 61 in troubles....
> >
> >
> >
> >
> >>Hi Jos\ufffd,
> >>i try it in your language (thx to google :)
> >>
> >>Eu signifiquei a unidade, que fornece o processador central com o pulso
> >>de disparo (normalmente uma unidade preta). Este componente \ufffd necess\ufffdrio
> >>de modo que o processador trabalhe.  \ufffd poss\ufffdvel, isso que \ufffd soldado
> >>completamente perto no processador central.
> >>
> >>I hope you can understand what i mean :)
> >>
> >>Greetings
> >>
> >>Stef
> >>
> >>Jos\ufffd Pereira wrote:
> >>
> >>
> >>
> >>>Thanks Stefan
> >>>I also replaced the oscilator board KLM-508 with one from my second
> >>>Poly61...No good results...
> >>>Best regards
> >>>Jos\ufffd
> >>>Portugal
> >>>
> >>>
> >>>
> >>>----- Original Message ----- 
> >>>From: "Stefan Rinass" <st@rinass.de>
> >>>To: <PolySix@yahoogroups.com>
> >>>Sent: Tuesday, March 09, 2004 10:36 AM
> >>>Subject: Re: [PolySix] Re: Poly 61 in troubles....
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>>Hi Jos\ufffd
> >>>>
> >>>>I don\ufffdt know the Poly-61 and how he is organzied, but maybe the
> >>>>"PS61"-Messsage is not generated by the CPU Chip, so -maybe- the CPU
> >>>>itself doesn\ufffdt work cause of a bad connected (overall defect/missing
> >>>>"ground-line") main Oscillator (which feeds the main CPU)
> >>>>
> >>>>Pure speculations.
> >>>>
> >>>>Greetings
> >>>>
> >>>>Stef
> >>>>
> >>>>
> >>>>Jos\ufffd Pereira wrote:
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>>Hi Gil
> >>>>>Yes, I did.
> >>>>>The CPU chips are assembled in sockets. I even replaced the chips...
> >>>>>Thanks and best regards
> >>>>>Jos\ufffd
> >>>>>Portugal
> >>>>>
> >>>>>----- Original Message ----- 
> >>>>>From: "gil_we" <gil_we@yahoo.com>
> >>>>>To: <PolySix@yahoogroups.com>
> >>>>>Sent: Monday, March 08, 2004 8:45 PM
> >>>>>Subject: [PolySix] Re: Poly 61 in troubles....
> >>>>>
> >>>>>
> >>>>>I don't know the P61 but does it have sockets for ICs ?
> >>>>>If so have you tried to tighten them in their places ?
> >>>>>
> >>>>>
> >>>>>
> >>>>>--- In PolySix@yahoogroups.com, Jos\ufffd Pereira
> >>>>><jose.gouveia.pereira@n...> wrote:
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>>Hi Johannes
> >>>>>>1) I checked the power supply: 14,99 VDC, -15,03 VDC and 5,04 VDC
> >>>>>>2) I don't know what is the Reset circuit. When I "ground" the
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>RESET pin on
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>>IC30 the poly61 display clears and return to the "usual" PS61
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>message.
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>>3) How can I check the CPU activity at pin 11 of IC30?
> >>>>>>4) Rechecked all PCB traces around NiCd battery and everything
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>seems OK...
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>>5) I checked the voltage levels at IC30 and IC1. Both have 4,98 VDC
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>although
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>>the voltage at the entrance of the board is 4,98 VDC. Remaining IC
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>in the
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>>CPU board have 4,99 VDC. Are these deferences significant?
> >>>>>>
> >>>>>>In my schematics there's nothing striked or changed.
> >>>>>>
> >>>>>>Thanks for your incoming suggestions.
> >>>>>>Best regards
> >>>>>>Jos\ufffd
> >>>>>>Portugal
> >>>>>>
> >>>>>>
> >>>>>>----- Original Message ----- 
> >>>>>>From: "Johannes Hausensteiner" <jo.synth@c...>
> >>>>>>To: <PolySix@yahoogroups.com>
> >>>>>>Sent: Wednesday, February 25, 2004 7:51 PM
> >>>>>>Subject: Re: [PolySix] Poly 61 in troubles....
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>>Hi,
> >>>>>>>
> >>>>>>>The CPU board is a safe bet ...
> >>>>>>>I would check the following (in this order):
> >>>>>>>1) Power supply. There is an adjustment/check procedure given in
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>the
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>>>  service manual. Do this.
> >>>>>>>2) Reset circuit of IC30.
> >>>>>>>3) CPU activity e.g. on ALE (pin11 of IC30).
> >>>>>>>4) Continuity of PCB traces around the NiCd battery. Electrically
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>+
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>>>  optically. I bet that they used the same brand and make as in
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>the
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>>>  Polysix...
> >>>>>>>5) Check for good voltage levels on CPU data/port lines (ca. 0V /
> >>>>>>>  ca +5V, nothing in between).
> >>>>>>>
> >>>>>>>In my copy of the schematics there are a few components around the
> >>>>>>>RST circuitry changed or eliminated manually. Do you have this?
> >>>>>>>(R145, D12, C53 (or is it C55, C33 ? - cannot read it...) are
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>striked
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>>>through; R146 is 2K2)
> >>>>>>>
> >>>>>>>Do you have access to an oscilloscope?
> >>>>>>>Where are you located?
> >>>>>>>
> >>>>>>>Good luck,
> >>>>>>>
> >>>>>>>Johannes
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>Jos\ufffd Pereira wrote:
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>>Hi
> >>>>>>>>I know it's the polysix group but there's  a lot of tech people
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>around
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>>who
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>>>could possible give me some clues...
> >>>>>>>>My Poly 61 at start up freezes with the initial message "PS 61"
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>in the
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>>>>display.
> >>>>>>>>I replaced the internal battery, but the malfunction continues.
> >>>>>>>>I replaced all the boards with one other damaged Poly 61,
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>except the CPU
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>>>>board.
> >>>>>>>>I also replaced the 2 chips CPU IC - 8049 from other CPU board.
> >>>>>>>>Can't replace the CPU board because the other one I have is
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>corroded by
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>>a
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>>>leaking battery...
> >>>>>>>>This take me to conclude for a damaged CPU board (KLM 509 - new
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>production).
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>>>Am I wrong?
> >>>>>>>>Does anybody have any suggestion?
> >>>>>>>>Do you have one of those in stock (KLM 509)?
> >>>>>>>>Let me know, please.
> >>>>>>>>Thanks and best regards.
> >>>>>>>>Jos\ufffd
> >>>>>>>>portugal
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>----- Original Message ----- 
> >>>>>>>>From: "dotwav" <rob19@e...>
> >>>>>>>>To: <PolySix@yahoogroups.com>
> >>>>>>>>Sent: Monday, February 23, 2004 3:16 PM
> >>>>>>>>Subject: [PolySix] Warming up time....(and a service)
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>>Hello again all...
> >>>>>>>>>
> >>>>>>>>>Finally got a SSM2056 chip for my P6 which fixed the annoying
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>6th
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>>>>>note enigma I was having, it's good to hear all notes play
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>normally
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>>>>>now.
> >>>>>>>>>That said, once I got going, I noticed that little response was
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>had,
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>>>>>from altering most of the knobs (the VCO section, is the only
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>thing
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>>>>>that made any difference). Playing about through all the
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>patches, I
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>>>>>got very little change (hardly any) when altering the FILTER,
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>EG or
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>>>>>MG sections.
> >>>>>>>>>Wondering what had changed, I put the faulty SSM2056 back in,
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>but
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>>>>>the same thing happened.New chip back in........
> >>>>>>>>>
> >>>>>>>>>I then wthought,  did it need warming up? so I left it fo 20
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>mins,
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>>>>>but no change, however, this morning, I went out, and switched
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>it
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>>>>>on, come back 5 hours later, and it's warmed up, the cutoff knob
> >>>>>>>>>works well enough, the resonance does work (but I don't think
> >>>>>>>>>fully), most other knobs work (though some don't seem to do
> >>>>>>>>>anything, some of the time - I think maybe the way a current
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>patch
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>>>>>is setup, that particular knob changes don't make any
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>difference)..
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>>>>>Two thoughts, how long should it take to warm up, how long does
> >>>>>>>>>yours take.....?   Does this need a service, can it
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>be "calibrated"
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>>>>>so that it works much better, or should I expect this from now
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>on.
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>>>>>(I've tried pulling all the IC's that I can, and re-seating
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>them)
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>>>>>Last thing, any recommendations for a UK service/repair man.
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>Tony
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>>>>>Allgood has said he's too busy at the moment, I looked at music
> >>>>>>>>>control website, which diverted me to cimplesolutions, who told
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>me
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>>>>>they don't repair classics like the P6, the only other one I
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>thought
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>>>>>of was synth-restore, but I emailed them 3 weeks ago, and
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>didn't get
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>>>>>a reply. I have seen old crows web site, with a guide on how to
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>do
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>>>>>the job, but I don't own an oscilloscope, and I don't want to
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>make
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>>>>>it any worse, so would prefer putting it in the hands of
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>someone who
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>>>>>knows what theyre doing.
> >>>>>>>>>
> >>>>>>>>>Thanks for your previous help..
> >>>>>>>>>cross modulated  Rob
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6
> >>>>>>>>>Yahoo! Groups Links
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6
> >>>>>>>>Yahoo! Groups Links
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6
> >>>>>>>Yahoo! Groups Links
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6
> >>>>>Yahoo! Groups Links
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6
> >>>>>Yahoo! Groups Links
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6
> >>>>Yahoo! Groups Links
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>
> >>>
> >>>PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6
> >>>Yahoo! Groups Links
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>
> >>
> >>PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6
> >>Yahoo! Groups Links
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >
> >
> >
> >
> >PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6
> >Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >
> >
>
>
>
>
>
> PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6
> Yahoo! Groups Links
>
>
>
>
>
>
>