I have an 5-6? year old S2 (model TCD240040) that has been running about a year since the last drive upgrade I performed. It started acting funny / freezing, then would not get past the gray screen wait message. I took it apart and measured the voltage on the unused drive connector. Both the 5v and 12v supplies measured low. Which brings me to my two questions. 1) Is the weeknees power supply compatibility chart accurate? Or, are there other Tivo model supplies that are compatible? In my online searches, I seem to recall one or two posts indicating that the Tivo TCD5400XX supplies may also be used? 2) If I pick up a slighly newer Tivo model on craigslist (say a dual tuner S2), will I be able to transfer my lifetime service by swapping in my current model S2's drives? Or do I need to pay $$ to Tivo to do that? Thanks!