When power is applied to remote wire, the SG3525 has zero volts on all pins. It will power on and play through all channels when I also connect power directly to pins 13,15 on the SG3525. I have checked (diode test w Fluke DMM) all of the small transitors (A06/A56, A63/A13) that appear to be related to the SG3525 and remote circuits, even replaced a few that measured a little off compared to others, but no obvious failures found. All resistors measure within range, until power is applied. I replaced a few resistors, circuits still tested the same off and on.
I am really stumped with this one. Anyone have any ideas of what I could be missing?
Thank you in advance
Mark
PS I am a new member and this is my first post, but I have been repairing audio equipment for over 20 years as a hobby.
I am really stumped with this one. Anyone have any ideas of what I could be missing?
Thank you in advance
Mark
PS I am a new member and this is my first post, but I have been repairing audio equipment for over 20 years as a hobby.
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Without studying the board right now, the schematic you provided looks very accurate. It will definitely help me with troubleshooting thank you