Hello. When I go to source on my Samsung TV, it shows TV is on hdmi AT&T. Why doesn't it show Comcast or Xfinity? Used to have Uverse. Sorry if this is a dumb question.
When you change your provider, you will need to go back and run your Samsung TV set-up again. Make sure to pick the correct provider for you area. It should show up on the choices found by your television.