I actually had the V1 Blow up last night. There was glass everywhere !!!
I turned it on and there was no sound. I checked the masters and speaker cable and scratched my head. I pulled the chassis out and removed the V1 shield an she was all white. I went to lift it out and it cut me like a chef at the Hibachi Grill. It had broken in two !! Then, I stuck my finger in there and there was a pin stuck in the socket. I went to pull it out with my fingers and it was like getting a diabetes test. It popped my skin and I had a Monty Python Salad Days gusher. I had to pull the rest out with pliers.
I popped a 12AX7M in there and she still pops. The amp still sounds great, but what a sh!t night.