Advertisements I have a Tivo HD that is occasionally freezing up. Typically my wife will come home from work and it is frozen. She can rewind and get the last 30 minutes of video before it freezes, but if she changes the channel she gets nothing but black screens from cable. If she changes to an antenna channel, she can see everything fine. If she reboots, she gets all the cable channels back again. Anyone seen this? it only happens on cable, not antenna.