Korg Polysix pitch drift
2004-04-14 by induktor777
I've been in the process of refurbishing a polysix and have done due diligence with regard to the usual suspects (i.e. battery mod). The only problem that remains is pitch drift caused by what I assume to be a voltage leak in the LFO causing a subtle modulation of the VCO. I have a working Polysix as well, and have had the luck of being able to A/B the KLM-367 boards between the two units. The problem follows the board under repair (I thought it might be the KLM-366 board). The unit is a "New Production" model. Any suggestions?