I have a turntable head-amp that I've had for about 30 years and it recently died. I've attached a copy of the schematic diagram for it and the thing is so simple 'til I cannot believe I haven't been able to repair it??? I've checked the parts and found nothing bad and when the unit receives power from the 9 volt battery, all of the transistors seem to have the correct bias voltage on them, but still there's no audio out (checked with my O-scope)! I don't get it??? I'm wondering if someone could point me in the right direction in terms of repairing this amp? Thanks!
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