Hey all, I have a Fender BXR200 combo that I purchased used about two years ago. Last night at a practice my amp decided to start humming. Humming might not be appropriate, but the gist is that it started to make only one tone at the same volume level no matter what the master was set on (when all was set to zero; master, eq, etc, the tone persisted). No bass sound would come out... you get the idea I'm sure. My question is, is the is fixable problem, and if so is it worth it to try to get it repaired?