I been working for the past 2 days on this amp, I found 2 op amp circled with red in my photo that does not have power supply. It is in the front of the drive circuit. All op amps are all supplied except on these 2. If I can make it working then I believed output will.come. Furthermore because of its thick brown coating tracing backwards is very hard, for the traces are not visible. I did not find any diffective diode or parts either in the power supply section. Does anybody encountered this issue or does somebody can share an schematics diag , I will appreciate it much.
