Discussion about the Korg PolySix synthesizer

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
>
>
>
>
>
>
>