Discussion about the Korg PolySix synthesizer group photo

Yahoo Groups archive

Discussion about the Korg PolySix synthesizer

Index last updated: 2026-04-03 01:39 UTC

Message

Re: [PolySix] VCF cutoff quirkiness

2004-09-14 by The Old Crow

Hm, that sounds like a pot with a cracked element.  It will have to be 
replaced, unfortunately.  You need to measure from the middle pot pin to 
ground to see the -5 to +5 volts.

Crow
/**/

On Tue, 14 Sep 2004 dizz@elitemofo.com wrote:

> Crow,
> 
>   After cleaning the pot out with some contact cleaner the problem has
> improved by appr. 50%. I believe it just hadn't been used in a while.
>   I finally got a decent DMM and measured the voltage on the pot.
> However, I don't see any negative voltage unless I reverse the leads. It
> reads 0V at minimum and sweeps up to 9.92V at the max rotation. In the
> trouble spot, the meter reads "overload" briefly and quickly continues
> measuring correctly after resuming the rotation. Any suggestions would
> be greatly appreciated!
> 
> dizz

Attachments