Danny - I'm glad you found the issue. From what I can see on the Musician's friend page you posted, that's a rack mounted mixer with a power amp built in.

Like Mac, I'm sure if it went bad it could probably be repaired - however with the listed weight, most likely that thing is actually full of surface mount circuit boards and little to no capability except board swapping for 'repairs'. Just an educated guess dealing with similar products in the bargain range of powered mixers with EQ, effects, etc.