think we may have found the culprit here……oh yeah and happy day before transistor Tues…….
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Ahhh the old broken kludge wire solder joint. I used to put a dab of hot glue on the PCB to hold the wire to take some strain off the solder joint. Looks like an easy fix. I always preferred those types of problems over intermittent component failures. Do you build and repair amps and electronics? I saw your bench and O’scopes with some open cabs in other photos. I retired from Electronic Design and built many circuit boards and prototypes. Kludge wires were a necessary part of electronics. I really enjoyed that type of work.
Note: Kludge means jumper wire or circuit modification.
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