Purchased a replacement hard drive from WeaKnees.(Order #875858) Installed it....... The unit restarted about an hour after installation..... Same problem I replaced the hard drive for. I've done this many times (long time customer) and it fixed the problem. As you know this points to the power supply or more. My question is will WeaKnees sell me a Phillips (DirecTv) series 2 without a hard drive? Then I could install the new hard drive in the new Tivo and be done with it. Granted the unit has only restarted one time and I am keeping a close eye on it. Maybe it was a one time deal?