Discussion about the Korg PolySix synthesizer

That solved it.  Thank you so much Klosmon.  Unsuprisingly, I discovered another problem after the first one.  My Effects section is always engaged and is producing some strange ring modulation type sounds depending on the value of the speed/intensity knob.  Is this related to the first problem?

-Mike

--- In PolySix@yahoogroups.com, klosmon <klosmon@...> wrote:
>
> One frequent problem with the CPU board can cause unwanted modulation of 
> the VCO, which can sound like what  you're describing.
> To see if this is the case, get a soldering iron & lift one end of R9, 
> which is a 10K resistor located between IC8 and CN05.
> This will disconnect all modulation to the VCO;  if it eliminates the 
> problem, let me know, and I'll describe where to go f rom there.
> 
> ~GMM
> 
> mborish_2000 wrote:
> >  
> >
> > I've got a few problems that I can't figure out. Unfortunately, my LFO 
> > is bleeding into the VCA? and I can't figure out a way to stop it. 
> > It's not a violent bleed but it's enought to make the Polysix 
> > unusable. If I turn all of the controls down, it is still there. All 
> > of the controls are functional. All of the potentiometers test out OK. 
> > I tested all cables for continuity. I cleaned the LFO modulation 
> > select switch and replaced the 4051 on KLM 369 without any luck. I 
> > read somewhere that somebody suggested cutting a trace, but they 
> > couldn't remember enough details about what they did. I didn't see any 
> > calibration proceedure related to the LFO modulation either. 
> > Everything else works fine.
> >
> > Does anybody have any suggestions? Logic and microprocessing are 
> > really beyond my knowledge.
> >
> > -Mike
> >
> 
> 
> > 
> 
> 
> 
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>