Curious, because the amps are very modular, & only a couple of channels went out, does Outlaw allow the customer to return only the amp PC boards for the failed channels? Of course, you'd also need to verify the xformer was ok, but a simple voltmeter could verify that. It could even be as simple as the B+ fuses on the specific amp modules. I'd probably check that before I would have sent anything back. Of course, if your not a DIY type, you'd have to return the whole heavy amp.