Discussion about the Korg PolySix synthesizer

We should check the signalpath with an scope, where this unwanted signal 
can be located the earliest, and then the control voltages.

Check with an: VCO Out, VCF Out (change the cutoff while checking), VCA 
Out (turn cutoff down while checking), Chorusboard out (with cutoff down).

Then check the control voltages:
VCO Pitch and Modulation CV
VCF Cutoff at pin 13 of 2044
VCA at R133

My personal suspect is now a multiplexer for a CV or the gate latches.

Florian

Am 06.09.2015 um 10:48 schrieb Eoin O'Callaghan cliofreak@yahoo.com 
[PolySix]:
> I agree. This seems to be a more complex sound than interference. Id say
> there is a ground issue somewhere in there and is seen in action when
> keyboard is lifted in and out BUT I d say you're right...there is
> something else at play here.
>
>