Quote from: DrGonz78 on May 15, 2024, 11:01:19 PMList voltage reading for Q8 & Q9 at all pin's connection points. Measure all power supplies. What are your -/+40v rails? -/+12v rails? Can you scope a signal through the unit and figure out where the signal goes bezerk?
Edit: If you scope the output is the fuzz actually crossover distortion?
Thanks for the reply, and sorry for my belated response. I had someone at my company walk out, which pretty much threw my last two weeks into a tailspin. I checked the power rails, and both have -/+40v and -/+12v I expect. As for the long tail pair, here are the readings I got from them with a 1kHz signal at 5v:
Q8
C -0.704
B -0.127
E 38.83
Q9
C -0.713
B -0.137
E 39.35
I'll admit my oscilloscope skills are lacking in terms to how to best use it to figure out where the signal goes off of the rails. I did put a scope at the end of the chain as suggested, and I can see that the bottom part of the sine wave appears to be clipping as it appears to be pretty flat. I'm currently looking into how to measure crossover distortion via watching some youtube videos, but any suggestions you can provide to an amp noob would be greatly appreciated.