Archive of the former Yahoo!Groups mailing list: Discussion about the Korg PolySix synthesizer
Subject: Problems with parasitic LFO in VCA?
From: "mborish_2000" <mborish_2000@yahoo.com>
Date: 2009-08-05
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