Is it a tube amp? Start with replacing the tubes.If it's a solid state amp, sounds like a bad capacitor or blown chip.Without knowing the brand and mo...
Did he/she handle the preamp or do you think he/she just pumped to much power through it? If it were handled it could be a preamp connection. :?: :...
Maybe the person whom borrowed it was a little rough plugging and unplugging the cables, maybe cause a short or ground loop in the connection. Does i...
Next option then - I can save settings in my Marshall either direct on the front panel or onto a footswitch. Has some numpty just pressed buttons on y...
Blown speaker? As I mentioned in the original post, that was my first guess, but the speaker is fine. I even tried it with a replacement speaker I ha...
My amp I can control the distortion by turning the main vol DOWN, and adjusting the level with the normal vol knob. use the main as the rough level, t...