Quote from: Loudthud on March 17, 2024, 01:33:02 PMProblem 2 would seem to be Q9, part of IC2. I think you can still get these parts at Jameco in the USA. Check the -15V supply for ripple, it comes from A1A.
Hey Loudthud, thanks for the great answer.
1. IC2 is marked "14007" on the schemo. Could I swap it with a "MC14007UB" or "CD4007"? (those 2 seem to be readily available).
2. How do I check the A1A ripple?
Thanks!