09-08-2016, 06:44 PM
The infamous flyback diodes!
I always suggest clipping those out, and leaving them out, because they seem to cause more problems than they prevent. (this is my opinion anyway)
I have seen a rash of problems with the 72-74 era V4s that have resistors that go way out of tolerance (always higher resistance) The symptom of this is often low overall volume, or low volume on one channel.
hard to say if this is the problem here... but It could be the case. and pretty easy to check. first try swapping V1 and V2 to rule out tubes.
I always suggest clipping those out, and leaving them out, because they seem to cause more problems than they prevent. (this is my opinion anyway)
I have seen a rash of problems with the 72-74 era V4s that have resistors that go way out of tolerance (always higher resistance) The symptom of this is often low overall volume, or low volume on one channel.
hard to say if this is the problem here... but It could be the case. and pretty easy to check. first try swapping V1 and V2 to rule out tubes.