Selling my Raven Labs MDB-1 Mixer/Direct Box/Buffer. Channel 3 does not work. Everything else functions as it should and the unit hasn't been abused. I'm assuming this is probably an easy fix for someone with some electrical experience (which I don't have), so I knocked off $75 bucks from the usual selling price. Also, still functions fine as a two channel mixer/direct box/buffer. Any takers?