I thought the problem was the power supply, as it has some bulging capacitors, so I bought a replacement from Weaknees. But it still won't boot up, so either it's the hard drive or the motherboard. I'll remove the hard drive and test it later. If the hard drive is good, and I bought a used Series 3 with lifetime and put the hard drive in it, would I be able to watch the recordings? I have over 100 hrs of recordings and I'd hate to lose them.