HDTV viewing is flickery

My HDMI cables are in good but HD channels (Comcast) are all flickery.  Regular TV seems fine.  Also, sometimes an error message "TV signal was lost" shows up but usually comes back in a few seconds.  Or if you change the channel.  Help???

 

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Last updated July 4, 2018 Views 0 Applies to:

Try rebooting the X1. Turn off all your devices. Unplug the X1 from the wall. Wait about 10 seconds and plug it back in.