Unplug ALL HDMI cables from the TV then remove power for about 10 minutes. This gives the HDMI chips a chance to reset. Now apply power and re-test the HDMI from known good sources.
If that fails, the TV likely has blown HDMI ports and needs repair.
My Samsung TV's HDMI sources do not work,I keep on getting a message saying 'This source is not connected,please check the connection again'. PLEASE can someone help me.

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