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No sound on tv and picture is flickering, menu guide says To be announced

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No sound on tv and picture is flickering, menu guide says To be announced

Went to turn on the tv and no sound and the picture is flickering and pixelating all over the place. Switched to guide menu and is says "to be announced" for everything. I already tried power cycling it to no avail. Trying to get to tech support through comcast online is a joke. It just keeps sending me around to the same pages and then back to my account page. I really don't want to spend 45 minutes on the phone either.