I am having the same issues. One day I went to turn it on and nothing, no sound. Everything else turns on fine, I can control the amp with my foot pedal but no sound at all. If I turn it all the way up you can barely hear something there. I also hooked up my speakers to a different amp and they work just fine. I noticed that all of my tubes don't have any lights on them at all no yellow glow. I checked the fuse and seems to be ok. Checked with a meter and it measured 1.7ohms and beeped like it was good on my meter. I have not taken it apart yet, but why would all of a sudden all of the tubes not be working? If one is out will all the other ones not work as well?
