Pixilation and freezing

Pixelation happens when the signal for the channel you are trying to watch is too weak or has too much noise. This is most likely due to a poor connection between the cable box and Comcast's network, usually in or near your home.

Troubleshoot by checking all connectors for corrosion and tightness, and by looking for damaged coax cable. Running the cable through a surge protector, a defective splitter, or too many splitters can cause signal problems as well. If there is an amplifier in the line make sure it's getting power.

If you can't find the problem or you'd rather have Comcast take care of it, call them at the phone number on your bill or 1-800-Comcast, or use one of the options on https://www.xfinity.com/support/contact-us/. Chances are they can't fix the problem remotely, and if not, insist they send a tech out to identify the cause and correct it.

If the tech finds bad coax, splitters, amplifiers, or connections in your home (even if Comcast originally supplied them) you'll probably have to pay for the visit unless you have their Service Protection Plan (https://www.xfinity.com/support/articles/service-protection-plan, closed to customers that don't already have it). If the trouble is due to a faulty Comcast cable box/DVR/digital adapter or anything outside your home, you shouldn't be charged.

Hi @eosborne, thank you for reaching out over Xfinity forums. What @BruceW has stated is correct. If you need additional assistance, please let our team know. If you have tried the troubleshooting steps above and would like to set an appointment, please send me a private message with your full name and service address. To send me a private message click my username "ComcastAnna" and select "Send Message".  

Same issue here! Has been on and off for months I’m SO frustrated! All local channels the others seem fine! 

I am having the same issue as well.  Local channels pixelate as well.