So I make it clear and short.
My screen broke after I dropped my phone, I changed the screen and everything was fine at first. When I put the cover the screen started going black (touch and everything works fine though).
I got rid of the case after the service shop said there is no problem with the new screen. I noticed that when a certain area was pressed the screen went off (added a photo for illustration)...to turn it on I had to press power button couple of times. Until it just stopped turning on.
I sent to that same service shop they changed the screen but it would turn on again.
Phone still vibrates and everything its just the screen. Any idea what it could be??