> Can I fix the bad unit once I get it?
> Yes you can, but it’s not easy.
Given that it's a fixable problem, I'm wondering why they don't ask users to return the product for a free repair/replacement. There could be a couple reasons I can think of for this. First, the headache and hassle of dealing with thousands of incoming packages they have to track, fix, and ship back... it quite possibly cheaper (parts, manpower, opportunity cost) just to send another out. Second, from a customer service perspective, immediately sending out new units is just the Right Thing to do.