Need amp diagnosis

[Jack C]

I fired up my Budda Superdrive 18 tonight to try a treble booster and ran into a problem. It worked for a few seconds (and sounded good with the pedal). Then all of a sudden, it lost some gain and volume. Channel one of this amp normally gets pretty dirty when the drive is cranked. Now, it stays clean throughout the range. Channel two has lost some gain and also sounds muffled and overly bassy.

I assumed it was a preamp tube and swapped them all out. No dice. I also replaced the power tubes with a spare set of EL84s I had laying around. Still have the problem. The amp also has a rectifier tube, but I don't have a replacement to try.

Any ideas?

[landon w]

check all of your cords for shorts and yo may want to clean all the input/output jacks with a pencil shaped tube of sand paper by moving in and out fairly quickly in order to clean the metal contacts in the jacks.

I would recommend you do this anyway, because this is a simple fix to bring it back to life by allowing all that signal to be uninhibited. this goes for all input and output jacks in pedals, guitars, effects, etc.

Other than those things, youve done all I can think of as well

Hope this helps

Landon