Quote:Posted by: Bob Loblaw Posted on: Yesterday at 22:50:21
...All the tubes glow when the amp is powered on but the current meters don't move above zero at all...
FYI there are two separate circuits in a tube amp: a low voltage/high current circuit for the heaters, that makes them glow, and a high voltage/low current circuit for the actual music, that is measured by your meters. So having the tubes glow is a necessary, but not sufficient condition for your amp to work, as you have seen.
Hopefully all you need is a new fuse, but it is possible the rectifier itself is dead. If you don't have a set of replacement tubes I would encourage you to organize one soon, because you never know when a tube will go bad. And the best way to check for a bad tube is to replace it with a good one. Same goes for fuses.