At least that's what I think happened. So I wonder if it's a fix I can do. I'm trying to avoid the 80 mile round trip to get the DRRI back to my amp guy.
I took the amp to him for scratchy pots and nothing out of the 1st channel. Everything works beautifully. The vibro turns on no problem, the reverb won't come on. Pretty sure the switch works, and I don't think there was a problem with the tube. But as you know, I can't technical very well.
Does it sound like the reverb tank wasn't hooked up?