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Hello, will explain some back story and will come back after i try something to fix the issue.
The original problem with this amp was a constant click at very low frequency, 1Hz'ish.
D118* diode was shorted which is at the output of the Reverb driver opamp, U101.
This caused the chip to heat up as it was driving near zero ohms and somehow cause that click in the amp.
After that I accidentally plugged the low voltage (orange transformer wires) supply wires one in the bias and one in the low voltage (1AM amp repair, wasn't to sharp)
This caused D206 to blow, somehow Q103 and D104 so channel switching stopped working if the Gain Boost was engaged. Anyways, replaced the bad parts and amps been rocking. The reverb started acting intermittent, i resoldered the reverb connector pins and it seemed to work fine. However, while testing before that it appeared that a low signal was coming from the output of pin 1 on U101 that drives the reverb until you really dug into the strings, this was viewable on my oscilloscope. The issue did go away somehow. I am just going to swap out the opamp and continue testing. Pin 3 does have the average of +7 volts applied to it and will try to monitor it on the bench to see that my signal is stable going into pin 3 and coming out of pin 1. Another note, that opamp really clips the output while driving the reverb, not enough headroom voltage! They should have used transistors to drive it and upped the voltage.
The original problem with this amp was a constant click at very low frequency, 1Hz'ish.
D118* diode was shorted which is at the output of the Reverb driver opamp, U101.
This caused the chip to heat up as it was driving near zero ohms and somehow cause that click in the amp.
After that I accidentally plugged the low voltage (orange transformer wires) supply wires one in the bias and one in the low voltage (1AM amp repair, wasn't to sharp)
This caused D206 to blow, somehow Q103 and D104 so channel switching stopped working if the Gain Boost was engaged. Anyways, replaced the bad parts and amps been rocking. The reverb started acting intermittent, i resoldered the reverb connector pins and it seemed to work fine. However, while testing before that it appeared that a low signal was coming from the output of pin 1 on U101 that drives the reverb until you really dug into the strings, this was viewable on my oscilloscope. The issue did go away somehow. I am just going to swap out the opamp and continue testing. Pin 3 does have the average of +7 volts applied to it and will try to monitor it on the bench to see that my signal is stable going into pin 3 and coming out of pin 1. Another note, that opamp really clips the output while driving the reverb, not enough headroom voltage! They should have used transistors to drive it and upped the voltage.
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