I have a Premier (TDD746500) that, after a power outage, has decided that it wants to be stuck on the "Welcome..." TiVo screen. From my troubleshooting (pulled all the cords/CableCARD out, swapped HDMI cables, used another power outlet - the TiVo "recommended" testing), I am down to either the HD being dead, or the power supply being shot (I am assuming and hoping the motherboard is good...I don't want to lose my lifetime TiVo subscription!). My question is - is there an easy way to determine which of the two components are bad. I have some basic electrical test equipment to test the PS with, and I have a small array of USB SATA adapters and Linux-based machines lying about. Testing the HD seems simple enough (probably start by S.M.A.R.T. testing and go from there). Drive also doesn't seem to have the telltale click-click of Death when the TiVo is trying to boot. The PS is a bit tricky - any known voltages or test points? A quick visual inspection doesn't show any bulging caps. Anyone have a good starting point for more in-depth troubleshooting? If it does need a new HD - any good ones to look for?