No display - that is an entirely different story now!!!
The relay is kept off by a /MUTE signal from the CPU … if the CPU does not run that /MUTE signal is kept down - hence the relay won’t pull.
Now have to look at the main board instead!!!
There are two IC’s on there that make 1.2VDC (IC2) and 1.5VDC (IC302) respectively from the 3.3VDC supplied from the PSU. Check both Vin and Vout on both.
At the same time also check the /RESET signal from out of IC3.
