Advertisements I'm experiencing this as well with my 2 TiVoHD units, bought at different times. I'll report this tomorrow to TiVo. It actually looks like there is no signal from the CableCard. What I did find is that going into the CableCard Decoders menu and testing the channels "reinstates" the CableCard and things start to work again. You don't need to reboot the TiVo to get your channels back. This doesn't fix it, but helps with some of the pain when you're waiting for the reboot.