Lumia 920 screen problem

[armjcv]

5 moths ago, i bought a new Lumia 920, and it was fantastic everything was working well, but 2 weeks ago, my 920 screen start going off by itself, with this i mean, i can be in the homescreen and it goes off, its like the screen turrn off but heres the thing:
the phone works while the screen is off

i first tought that it was a software problem, i tried to factory reset the lumia and it bricked, i send it to fix, but now the problem is still there, i dont know if it is a hardware problen of the screen or what, please help me

edit:
i forgot to say that sometimes the screen goes like if it was broken ill upload a picture of it in the next minutes

 

[DBDev]

It is probably a hardware issue, I think you should send it back in.