We switched over from DirecTV to Xfinity a few days ago and have internet and TV set up. I have no issues with the internet connection and TV if only the main TV DVR box is set up. However, if the second small TV box is connected I get dropped frames and pixelation on both TVs. Just disconnecting the second box from the coax solves the issue. It doesn't matter which room the boxes are connected to. The external cable is split 1 to 4, (gateway, DVR, small box, and capped). Tried resets and system restores. Is this an issue with not enough signal entering the house or a bad small box? The buried cable in the yard is over 20 years old. They won't send a technician to check the buried cable since one TV is working because of COVID and high demand.
Solved! Go to Solution.
Yes. Removed the powered SWiM and their 8 port splitter. Replaced with a single 4 port splitter. Cabling to wall outlets was unchanged, but I see the issue regardless of which wall outlets the boxes are plugged into.
No change with the gateway powered off. Still get intermittent loss of picture. Loss seems to be worse and more frequent on HD vs SD channels but also occurs with on-demand programming.
The issue turned out to be noise on the line going to the main box. It wasn't able to feed a clear signal to the small box. I ended up moving the main box to a clean line and installing a wireless receiver where the main box was previously located.