HD channel pixelation help!

How are three cable boxes connected and assuming a modem without a splitter? Check your cables are tight and in good repair. Remove any extra splitters that you come across. Channels come in on different frequencies, something along the way is impeding those frequencies of the channels you’re trying to watch. You may need a tech out to troubleshoot further

My apologies, there is an initial 4-way splitter in the outside box that was previously installed by a Comcast tech (not for me). All cable connections are good and tightened.

Greetings, Lizmtrudeau! I appreciate you taking the time to reach out to us here on the forums. I hope you are having an amazing day. We apologize to hear you are having issues you are having with some of the channels being pixelized. We would like to see what we can do to get this resolved. Can you please send us a PM with your first and last name so we may further assist you?

 

To send a private message, please click the name "Comcast_Support" then select "Send a Message" on the right side.

Then you should have a tech out, I escalated it up to a colleague to help get one scheduled for you if that’s how you want to go

PM sent.