[NavyVet]

I have Spectrum but have similar problems. It always seems to be the same channels that pixilate. For me it's FYI, DIY, Discovery Family, and Destination America that this happens regularly and just on one of the DVRs. I found that unplugging for at least 5 minutes and then rebooting the DVR/cable box helps for a while. Lately, I have been having to do that every week or so. You could also ask them to send a refresh signal. I think this can be done on line through their website since getting through by phone is impossible. The other possibility is the box could be going bad, in which case you'd have to take it to the Comcast office to swap it out for a new one. Hope this helped a bit. Good luck!