Thanks guys! Sound advice.
So, I had checked the Pre amp Out and Power Amp In sockets and found at least the pre amp was working.
But! I just realised I made a foolish mistake. By not having the sockets (pre amp in & power amp out) screwed into the chassis they weren't getting ground.
So, next I need to trace for a signal. Heading to work first and then I'll get back to it!
So, I had checked the Pre amp Out and Power Amp In sockets and found at least the pre amp was working.
But! I just realised I made a foolish mistake. By not having the sockets (pre amp in & power amp out) screwed into the chassis they weren't getting ground.
So, next I need to trace for a signal. Heading to work first and then I'll get back to it!