Hi, I have a Technics SA-6000X receiver that has stopped working after a power outage. I replaced some burnt-out fuses and the receiver now turns on, but the sound only works for a few seconds before fading out. Prior to the power outage, I had lost the front left channel and attempted to fix it by replacing the power transistors, but it did not work. I have gone through all the fuses in and outside of the receiver and replaced those that required replacing. I have the service manual and circuit diagrams, but I am unsure of what to measure and how to troubleshoot the issue. Should I measure the transistors inside the circuit? Should I measure between ground and each leg or between the legs (E->C, B->C, etc)? What do the V tables mean? They do not explain how to measure. I have tried measuring the power transistors between the legs and I see a voltage spike from 0V to 50V between the collector and base/emitter, which gradually goes down to 0V again. Any help would be appreciated, as I really like this receiver.
