hi, i get this amp with some burned transistor and i replaced .know the amp turn on with no current excess but there is no audio. both opams are receiving -10 and +10 on their power supply pins(8-4),and there's 96volts on HV+ AND -11VOLTS ON HV-
i replaced the op-amp u21, and now the amp power up and i can hear audio when i touh the rca pin, but after the protection light go off the amp makes a big noise on the speaker like a tone.