Rogue Sphinx issue

Just picked up an older Sphinx integrated that, I was told, had a dead left channel.  Got around to hooking it up today and can't get anything out of it - neither channel seems to be working now.  I get a crackling out of the speakers if I remove the cables from the binding posts and there is a click inside the unit.  I assume the click is some type of protection circuit?  Just guessing of course.

I checked all of the fuses and the 2 signal tubes and they all seem to be fine.  Tubes are supposedly new.  Going to reach out to Rogue and my local tech but just thought I would pick the brains of the techies here. 

Any thoughts greatly appreciated!