Moog Music Forum

Hi asking for any technical help here. So I was doing some general maintenance and decided to calibrate the Oscillators on my Rogue. I guess I had been using them in sync mode so I hadn't realized how totally out of range my Osc 2 was. In following the service manual I can't get in near calibration before I run out of turning space on the trim pots, but in sync mode the keyboard sounds fine. Osc 1 was calibrated without any issues whatsoever. Anyone got any pointers on what I should be looking at or for that might have gone bad? Any help is greatly appreciated.
Thanks
Barry

According to the service manual there is one expo for both oscillators (U7 CA3046 transistor array), so I assume the problem resides in the saw core of Osc. 2 (Q6 PNP 2n3906, U9A Half LM393). I would replace both and check again.

It was totally the 2n3906, however, somehow I never realized that this Moog hadn't had the gross foam goop removed, so I went down that rabbit hole. Ugh so gross. Thanks you soooooo much for the help!
Barry