Here.. try this.. take the rear cover off of the amp & turn it around. I had a similar thing happen to me with an Atomic 3000.1. The back plate was backwards and there was a protective piece on the wrong end.. allowing components to tap on the back plate & instantly pushing it into protection. Maybe when it was repaired it was simply put on backwards. Seems crazy.. but it has happened to me personally and I was moments away from throwing it in the fucking trash.
