I'm having the same problem.
The picture is stuck on HGTV and I can change channels - and hear the other channel, but the picture is frozen on a different channel.
This is new.
PS..I have already:
Shut down TV and restarted
Shut down box and restarted
Sent reboot to box
checked all of the connections
And yes, we're on the proper input.
Any other ideas?
You were using the Internet when the down-load failed.
Have you unplugged the wifi/router and allowed it to re-set?
Will your television work with an antenna when you switch the source to "Antenna"? Even if you do not have access to over the air television signals where you live, the television should lose the current picture frozen on your tv screen. You should see a screen asking you to run a search for channels, or something similar.
If the frozen picture remains the problem is with your television. I would contact the dealer were you bought the tv, to find who services your brand tv under warranty or otherwise.
My tv screen freezes but I can still change channel. But only audio changes. Screen stays frozen. What is the problem ?
Which Comcast STB do you have?