i have an opportunity to purchase a Mesa PH212 at a cheap price. However... The only catch is that there is no sound coming from the drivers, but the horn still works. I don't have much experience with these cabs, but where would be a good place to start? The seller has given me permission to do some inspecting so long as I don't tear it completely apart without plopping down some cash and buying it. Super cool guy and I find that to be completely fair. What I know - He was playing through it using a Fender Silverface Bassman. I don't know which particular model in that family, but I can't imagine he was pumping enough wattage through it to blow the drivers. Maybe I'm wrong, who knows, since strange things can happen with electronics. I just know that those cabs are tanks and it should take quite a bit before they let loose. According to him the sound was there one minute and it was gone the next. No warning, no speakers frying, no smell, just gone. Like I mentioned above, the horn still works. Should I give this cab a chance and buy it cheap and repair, or should I run?