I had that problem on my Series 2 several times this summer. It seemed to happen after brown-outs and blackouts.nitsuj said:About 4 times in the last 30 or so days since I bought it, my Tivo HD has lost the TV signal. I can still change channels and whatnot, but I am presented with a grey screen during normal TV watching. This is on analogue TV, no cable cards installed. It has recorded for the full length of program and I go to watch and am presented with the blue TiVo screen with a playback bar at the bottom with no green in it.
Only a reboot seems to fix this. Is this a common problem?