Thanks for the reply. I looked at the post you pointed me to, and it didn't work......at first. I ended up doing the exact same thing as the other poster, in that I just started messing around with the mixer and switches, and all of a sudden the distotions disappeared. He had said to turn off the digital mixer, but I don't think that's what cured mine because I turned that on and off a dozen times with no effect. It seemed to kind of fix itself. I just happened to be moving the mixer levels around at the same time.
Anyway, thanks again. I'm glad I didn't have to take my machine apart for no reason.
bardoksan