i have a micromoog that has been brought back from the dead, the only remaining issue is the filter contour attack and release pots don’t seem to effect anything. the filter section seems to work fine (cutoff emphasis contour amount) checked the pots and resistors and diodes around the ic701 556 dual timer but can’t seem to find a problem. i even replaced the 556 with a new one. can anyone help?
Check the actual potentiometers - I say this because I worked on one some time ago and had a couple of pots where the carbon had actually deteriorated and flaked off the track..!
Cheers,
Tom