I had the same problem with my VTL MB450's. A bad tube blew the main output fuse on one of the amps but the tubes themselves still lit up because there was a small amount of current going through them. The fact that there was current going through them mislead me to thinking that the problem was not the tubes.
I would agree with Jea48 that a bad tube on the right side when switched to the left side blew a fuse on the left side as well.
I would check the fuses (use a volt meter) on this amp to see if indeed they are blown. If they are, you need to replace the fuses and the tubes before proceeding any farther.
Scifi
I would agree with Jea48 that a bad tube on the right side when switched to the left side blew a fuse on the left side as well.
I would check the fuses (use a volt meter) on this amp to see if indeed they are blown. If they are, you need to replace the fuses and the tubes before proceeding any farther.
Scifi