Last night my TV said "no signal" when on the Tivo input. I figured the cat had knocked off the cable on my splitter. Today I discover no lights on the front of the tivo but it is plugged in and warm. I unplugged/replugged and could feel the hard drive spinning (don't think it was the fan) but no lights and no signal. It's an HD series 3 with a couple year old 1TB drive with lifetime of course. No hints of problems until this failure.Thanks for any advice.