Facing TV Problems? Ask a TV Technician.
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By far the most common cause of this problem, is a glitch in the cable box processing.
Please follow the steps below:
1) Shut the TV off, and then disconnect the cable/SAT box AND the TV from power (unplug their power cords).
2) If using an HDMI cable, disconnect and reconnect the HDMI cable on both ends when the cable box is unplugged from power (make sure it's secure on both ends).
3) Press and hold the power button on the TV itself (not the remote) for 10 full seconds while the set is unplugged, then release the power button.
4) Plug the cable box AND the TV back into power, then turn the TV on and attempt to watch a program.
Please read my reply and follow those steps to proceed.
Let me know if you need further assistance. Also, before you go, could you please click a POSITIVE RATING (by scrolling all of the way to the top of the page, and clicking 3-5 stars), so that I am credited for working with you today?
Were you able to try those steps and are you still having the same problem?