Archive of the former Yahoo!Groups mailing list: Discussion about the Korg PolySix synthesizer

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Subject: Re: Problem with new KLM-367A

From: "ieinzz" <ieinzz@yahoo.com>
Date: 2010-09-05

Turns out I don't have the clone board. Underneath it looks worked on, isn't signed, and I have the cross head trimmers on the topside. My problem seems to be exactly the issue with the new boards however. I'm getting instability in the programmer section with the write switch writing to different programs and program switches 5-8 selecting banks and different programs. Are there any known issues with C23 on the original boards? I'm looking at C23 on my board and it's a small ceramic reading "22". I'd have no trouble doing basic soldering/desoldering but it appears I'm close to getting over my head!

--- In PolySix@yahoogroups.com, Andrew Jury <andy@...> wrote:
>
> Hi,
>
> You can easily tell if you have a clone board fitted. You¹ll find that there
> are six trimmer controls in the centre of the board. If they are round and
> have cross heads this is an original board. If they are rectangle and have
> slotted adjustment heads this a clone board. In order to fix this problem
> you will need to replace C23 on the board with a 10nF ceramic disk
> capacitor. Any electronics tech or even you should be able to do this if you
> can solder!
>