i bought a behringer 90watt amp like a year ago and about six months ago it started to make a loud poping noise just before it shuts off at random when i played on it. i got my money back but i didn't have the bring the amp back so i still have the broken amp and want to see if anyone has any ideas what the problem might be.
Kinda sounds like a short to me which really could be anything on the board. I'd take it into a shop and have them test it or call berhinger about the problem. After a few nice jolts I've learned my lesson about working on amps. Also does it happen at really loud volumes, or at all volumes? the vibration at high volumes might be causing what ever is loose to rattle causing the amp to short out or overheat. If you have the amp on top of a speaker cabinet try setting it on a table next to it or on the floor and see if that helps.
it really is completly random and it doesn't matter how long or at what volume im playing at. ill have my friends dad look at it who is an electrical engineer who specializes in audio equipment. again ive already gotten my money back i am just seeing if i can manage to get two amps out of this