I have had the exact issue for the past 3 months. No matter what I do it comes and goes randomly. The latest issue is that even the menu and video buttons on the TV itself generate no response. The problem then seems to go away but several minutes later the initial set up menu keeps appearing. If the problem follows the normal course I probably will not see it for a week or so. Very annoying. Lippy
You have a button stuck either on the set itself or on the remote. Stargazer
If you don't have a stuck button then something has failed in the system control circuit. (Computer circuit).
Also the set may be looking for a signal from the tuner. Maybe the tuner has a bad connection in it. There are so many things that would cause this condition !
You need to take it to a shop and have it checked out by a pro. A circuit board may require relacement. There is a "jungle chip" that may be bad. That's a chip with a lot circuits inside it.
Stargazer
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No stuck buttons unfortunately...
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