Newest new cable box upgrade

Hello, @user_20338b! Thank you for reaching out to the community with your picture quality concerns. I know how much I enjoy watching my favorite programming, and we definitely want to help resolve this so you can too! I appreciate the details you've shared regarding the television being used and your latest TV Box. I just have to say, wow! It's pretty amazing that you've been able to use that TV since 1999 without issue, and you may want to look at upgrading your own equipment in order for things to work well, but we can start with our Video equipment to see if this can be resolved remotely. Without pulling up your account to look at the exact equipment you have at this time, may I ask when you received the newest cable box you mentioned? And have you noticed any other service issues like another TV Box and television in the home, or Internet connectivity concerns?

Hello, thank you for responding. I received the new box on 12/18/21 and installed and activated it the following week. The picture was wonderful except for when it got line-y and rolling, like back in the day before cable when we had the wire hanger and tinfoil flag antennae. I usually had to reset the picture with the xfinity app and once I called Comcast, but the last two weeks the picture refused to go back to normal.  (I know my tv is old - back in the day tvs lasted for decades) lol

All good to know! Thank you, @user_20338b. May I ask what kind of cable you have connecting the TV Box to this television (i.e. coaxial, component, composite, etc.)? You can refer to this list of connection types if it helps!

Coaxial, I think. I’m not at home, tho so I can’t check