Just wanted to share this technique from the TiVo support page (couldn't find a reference to it on a quick search of the forums -- apologies if it's been posted elsewhere). I used to unplug/replug either the USB cable or the power or both when my channels went out, but TiVo's support page has an improbable but effective method that saves me from having to get my butt off the couch: 1. In Live TV, press CHAN UP twice. 2. Press the Live TV button to switch tuners (or press INFO to display the channel banner and select the other tuner). 3. Press CHAN UP once, and then CHAN Down once. You should now be able to see video. I've used it a couple of times and, strangely enough, it's actually worked. Of course, this doesn't alleviate the frustration of having your TiVo cut off in the middle of a recording, but it's still handy.