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Can you please remove the power to the TV (so unplug it from the power socket).
Then on the actual TV, hold the power button for 60 seconds then release.
Then wait 10 minutes, connect the power again to the TV, turn it on and tell me please if it is now operating correctly.
Let me know the results please
Hello, This is Aric a different expert here. Don't unplug your TV as that has nothing to do with the problem you're having.
The "Please run auto scan" message can be caused by the TV's Input being changed, the HDMI cable failing, or Cable/SAT box needing to be rebooted.
Please unplug the Cable/SAT box from power and shut the TV off.
Disconnect and reconnect the HDMI cable between them on both ends- making sure it is secure.
Plug the Cable/SAT box back into AC and once it's rebooted turn the TV on, and use the INPUT or SOURCE button on the original Insignia TV remote to select the correct HDMI Input.
Let me know what happens.
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Please let me know how you went with my instructions