Hello,

to be honest. I think it does not make sense to talk about it, if we do not have a reliable technical description of the real facts. I don't want to sound unpolite, but though you have some technical knowledge, everything you are writing is a second hand information.

You technician should write here. We even do not know whether the VCO in question is flat, or sharp. He could provide detailed data of the control voltages at the four VCOs.

And before he replaces the 2033, he should swap VCO-chips first between the voices (that is the usual procedure in such a case - even if it is a bit cumbersome due to the thermistor on the 2033).

Florian


 15.09.15 04:37 , voltagegrove@... [korg_mono-poly] wrote:

Is there any chance that it could be one of the SSM2033 chips  The Oscillator functions beautifully minus the whole being unstable and drastically out of tune.  There are some up for sale on ebay.  Not sure if I should pull the trigger on those... Any ideas with the latest info I posted earlier