My original HDVR2 died and wouldn't boot up and made a clicking sound. I swapped a power supply from another HDVR2 (that apparently was not on my account that I got off eBay for parts but booted up and had its own matching card) and my machine still wouldn't boot. I swapped the hard drive into the old unit, it booted but gave error #51. So I surmised the motherboard or something other than the power supply in my unit was bad. I've been told I cannot activate the second HDVR2 with my old hard drive. And that my best bet is to try and repair the motherboard of my original unit and put my hard drive back? A rep at Tivo told me I was SOL on getting the second unit on my account and that they don't activate HDVR2s except on the original accounts they were on? Help! What can I do?