mV eheheJust confirming that those values you posted are Volts, and not millivolts (mV)?
Hello Mr . NickIf the PSU voltages are good and output transistors checkout fine your next best shot for good DC offset are the IC pair at output stage (2SA798) that are known to be failure prone.
These are replaced by the modified KSA992 transistor pair per channel.
transistor MJ15025 ko
I hope to find the spare part,
and no other damage....
this fault on this transistor determines the non-functioning of the relay?