I think I have blown a preamp tube , the one that takes care of the vibrato , which is a 7025 tube.
The bass & treble controles in the vibrato channel aren't working , and there's hissing and humming everywhere that increases with the volume ... Also , the amp starts cranking from 2 or 3 !
I think these are all signs of a faulty preamp tube ,yeah ?
The good thing is that the normal channel is working pretty nice , but I the noise comming from the other channel can be heard slightly. (the noise increases with the vibrato's channels volume only )
My first question : If I carried on operating the amp with this blown tube for a while , is it possible that it may affect any other components or tubes ?
Second : In case I don't find an exact 7025 tube replacement , from some articles that I've found on the web, it seems that a 12Ax7 can fit in nicely ... So , am I going to have it rebiased or something ?
