Why my flash flickers continuosly in camera mode.

[AC Question]

My flash flickers continuously in camera mode. In Marshmellow, I have cleared the cache, cleared camera cache, reset the phone, reset and not restoring the phone, Upgraded to Nougat, repeated all processes I can think off but nothing seems to work.
I need a solution.

 

[belodion]

It may in that case be a hardware fault.