Discussion about the Korg PolySix synthesizer

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@eggconnect.net>
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
>
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