Ok I got a weird one.
I ran into a JVC RX-318 that is half dead. when you plug it in, the standby relay comes on, the main speaker relays will also come on 5 seconds after the standby relay comes on, does this under normal conditions also.
But the whole front panel is dead, no VFD, no standby LED, nothing.
i see filiments, thats about it. I checked the incomming standby 5V, it is present.
im at a standstill. any ideas? bad micro?