This might not be the best place for this, but its saturday and I'm ready to do something and I can't call Yamaha till Monday. The Left/Monitor channel on my Behringer Europower PMX 2000 is broken. It makes a slight fuzz or hiss that gets louder as you turn it up, but does not produce sound of any other kind. Does anybody know what this could be. The bridge output still works so its not the amp. What could it be? HAAAAALLLLLLLPPPPPPP MEEEEEEEEEEEEEE!