In the mV range is good. Do you hear a click 3-5 seconds after you turn it on? Trying to determine if the speaker relay is pulling in.

Hi there, I have a technics su-v 620 it was working fine yesterday, I was listening to music at low volume and then it went click and stopped working! Stand by light comes on when plugged in and when you push the power button it clicks once straight away no second click tho, could it be the speaker relay?

Moderator edit: New thread created from this.

 

You have to get the circuit schematics and start doing some diagnostics.

Check to see if the speaker relay is being energized or not.
If the relay is not energized, measure the DC voltages at the outputs of the power amp before they go to the relay.