I have a MTX amp that had to be sent out to have the output casing tightened. When we went to put it back in exactly the way we had it, and it worked then, but now all it is doing is making one continous noise. Any ideas on what to do?

 

im no expert by any means but when my amp was messing up and doing that i had 2 problems 1 my ground wasn't good enough, so check your ground and 2, an In-Line filter, what this does is cut all other interfearance noise that may get to your wires. hope i could help