Discussion about the Korg PolySix synthesizer group photo

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Discussion about the Korg PolySix synthesizer

Index last updated: 2026-04-09 23:04 UTC

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Re: [PolySix] Replacement CPU chips available

2007-09-17 by klosmon

I do -- I've done about 30 at last count.

I'm in Oakland, CA.

Question:  is the output to the headphone jack have the same problem?
When tracking down output problems, remember that the sound goes from 
the voice board through the effects board before reaching the output 
jacks;  also, the CPU board has some effect on the effect board levels.

Also, it's not uncommon for the volume pot to be bad, giving scratchy 
or diminished output.
~G
analogsynthervice.com
At 07:05 AM 9/17/2007, you wrote:

>Do you do repairs on Polysixes and if so where are you located? I've 
>to a Polysix with what I think is factory installed midi and the 
>output is weak and what I would call distorted. The patches change 
>just fine and everything except for the sound seems to be fine.
>
>I'm not in a big hurry to fix it but would like to get it done at some point.
>
>cavernosum7 <<mailto:klosmon%40sbcglobal.net>klosmon@sbcglobal.net> wrote:
>Finally gotten around to securing programmable versions of the 8040 &
>8049 CPU chips used on the Polysix Processor and Voice boards; and
>after a long search, found an appropriate programmer.
>
>If anyone needs replacements for either of these, I can offer them for
>$30 each, plus shipping. These are new old stock 8748 & 8749 chips,
>programmed with the original Korg data and tested in my Polysix.
>
>HOWEVER, be aware that most of the repair problems you will encounter
>in a Polysix (mainly due to battery leakage) will not be solved by new
>CPU chips. These are not offered as a cure-all; just for people who
>KNOW that this is what they need.
>
>~GMM
>analogsynthservice.com
>
>---------------------------------
>Fussy? Opinionated? Impossible to please? Perfect. Join Yahoo!'s 
>user panel and lay it on us.
>
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>
>


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