McIntosh MC 2150 Fried

MC 2150 Amp. I made the foolish mistake of unplugging interconnects from amp and did turn it off first. There was an obvious noise when I removed a cable. I took notice and it crossed my mind that this could be bad. Right channel is now not playing music, just some low level hiss through speaker. I tested both channels to be sure it wasn’t a speaker which it is not. I would greatly appreciate any advice on what may be damaged and what I should expect on the cost of the repairs. There are a couple of McIntosh repair options for me locally, but, would like to have some level of knowledge on most probable needed repairs before dealing with them.