I used to have a HK receiver that had a channel go out, but in my case it was due to poor ventilation, and the prolonged overheating this caused continually in the unit. I kept the unit, in case I ever decide to use it in a home theater set-up, but when I bought my current audio system I also bought an equipment rack that is very well ventilated.
That said, I think a repair would not cost too much on it, so if you like it, keep it.
That said, I think a repair would not cost too much on it, so if you like it, keep it.