Chosen Solution
Hello Ifixit community I have a problem with my macbook pro a1398 i had a broken display so I ordered a replacement. After I replaced it the bottom 1/3 started flickering after 3 hours after the replacement and the then it stopped like this
then i disconnected the new one and placed the old one, which displayed the old problem
after i disconnected it and attached the new one nothing was displaying, not even back light or image was showing when i put a flashlight close to the screen. So I attached the laptop to a tv via HDMI and everything was working. So whats the problem now?
Probably you got a faulty replacement screen..results of the tests you’ve done point to that direction.