My Boss Metal Zone pedal stopped working awhile ago, and I can't find out what's wrong. It has a red light which tells you that the pedal is on and the connection is through, so since the red light is on, it's neither a battery problem or a wire problem. Plus, I can play my guitar when I have the wires through the pedal if the pedal is switched off, so it's definately not the wires, it's the pedal. When the pedal is on, it makes no feedback whatsoever, even with the gain and volume all the way up.

Anybody know what's wrong with it, how to fix it, or where to go to find out how to fix it?