This amp started getting a buzzing noise recently in the left channel and I looked it over inside for any loose connections and did the smell test and the only thing I can come up with is that maybe one of the big capacitors or resisters is going out on the left channel. The signal going through the left channel is still amplified but it's distorted too. The buzz is loudest when I first power up and doesn't matter if anything is plugged into the left input. The right channel works perfectly so I've been using the right channel to drive 2 monitor speakers. Anybody else had a similar amp problem and if so how much should I expect to have to shell out to get it fixed? Thanks all.