Question Samsung Tab A7 Screen keeps locking

Jan 24, 2022
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Hi I have a 2020 Galaxy Tab A7 and the screen keeps locking randomly. It can be instantly after unlocking the device or after a few seconds up to a few minutes after unlock. This happens whether I am touching the screen or not. It is not powering off, it's just locking the screen but makes the device unusable.

I've tried the following to resolve it but nothing has made any difference.

Removed case in case magnet affecting it.
No software updates available.
Screen time out function increased to max.
Opened in safe mode.
Soft reset.
Hard reset.

It's not worth paying for a repair but I would like to attempt a repair myself before replacing.

Any suggestions gratefully received.
 
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