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Pioneer SA_6850 with power but no sound, Relay wont work, What part should i trace

I almost try to find out parts in protection circuit but i cant see any fault.
What other parts should i traced in order to function the relay ?



Re: Pioneer SA_6850 with power but no sound, Relay wont ...

If the power amplifier stages are working (with no DC on the outputs) then you should check the power supply and then the protection circuit.

The most likely problem is shorted transistors in the amplifier that is causing DC on the outputs. In this case the protection circuit is doing its job; do not defeat it.