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Without knowing more I would check your HD cable ends for damage or dirt and reconnect them. If not fixed purchase new 4K HDMI cables. Had my cables go bad from a lightning storm with no visible damage to outside of cable. Good luck!
Sorry, there was a problem. Please try again later.Check that you be using the proper source on the tv and that your hdmi cable is blue ray and or 4k compatible as your blue ray player.
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