Question a problem with pilot tv - sorce manu is poping evre two seconds

Aug 5, 2019
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Hello everyone,
In the past week, the source menu jumps on the screen evre two seconds - the menu of selecting hdmi 1/2/3 etc

What I've tried:
I hung up the converter - still jumping
I took out batteries from the remote control still jumping
reset to default settings the tv opreating system
Unloading voltage
Pressing the TV source button to make sure it is not constantly pressed.
Hdmi cable replacement

As mentioned, none of the attempts have succeeded .

I have attached a video link - https://streamable.com/1gt4o
 

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