I'm really confused and wonder if anyone else has experienced this issue.

We have Uverse and everything works great on all our TVs except the one in the media room. Periodically, the picture freezes up, pixalates and the sound is intermittant. Mainly on HD but sometimes even on regular stations. It doesn't happen all the time but when it does happen, it can be on any channel. I have changed out the box, the wall plug and the cable.

Could it be the Samsung TV? But all our TVs are Samsung.....

Crazy.................... Help!!!!!!!!!!!!!!!!!!!