Debbuging solid state amplifiers?

[therecordingart]

I bought a Randall Century 170 that powers up, but has no output. I've debugged stompboxes using and the audio probe in the debugging page, but before I do that I wanted to see if any of you have tips on debugging something plugged in to the wall.

I've built a bunch of gear (including a tube amp) that run on mains power, but never had to debug them...luckily only stompboxes.

Your help is appreciated.

[Mark Hammer]

Do you kow that the power supply works, and that the front end (preamp /tone-control) stage works?