I really don't know what the problem is here, but something doesn't sound right about this whole situation. Maybe the business is in some type of trouble. Its possible they may not have the resources available (parts, labour or both), to fix the amp. If it were me, I would do whatever I had to do to just get the amp back. I would rather pay someone else to fix it rather than watch the manufacturer close down, or something, and loose the whole thing.