Hi - I joined a while back and posted initially about my dead mono/poly with some suggestions to get tke keys cleaned up first. Well I got distracted by other projects (polysix is near finished) since then but now I'm ready to get back to it. I cleaned up half the key contacts (enough at least to know it's NOT the key contacts) and checked the P.S. voltages - seem okay... but what's happening now - (verified the keys are working - mostly- due to triggering VCO LED's on front panel) is that I just have zero output. I'm guessing it's a bad chip somewhere. When you turn the volume all the way up I can hear a rising and falling soft white noise with key presses. So I'm guessing I'm hearing the VCA circuitry doing it's thing ( ) - where would you look next The VCO circuitry Suggestions Or can anyone direct me to a post that might be relevant unfortunately the archive here doesn't seem searchable (or user friendly really).

Thanks. I hope this is clear enough.