SCI Prophet 600 Repair (2)

The second Prophet 600 for the year 2023 I have on my bench.

This one has a lot of contact problems on the keyboard as well as noisy potentiometers. So a full cleanup of the keyboard contacts was done and all potentiometers and switches were treated with CAIG Deoxit and CAIG Fader Lube. Once that was fixed I was able to track down one faulty oscillator where I simply replaced defective CEM3340 IC. This was followed by a tuning procedure in order to achieve a nice evenly tuned unit.