Chosen Solution
I have never dropped my laptop, nor had it gotten any water damage. The screen used to flicker black and back (the backlight that is) over a year ago and a simple restart or tilting it slightly usually fixed it. Recently it completely stopped working and used an external monitor to do my work. One day I randomly decided to open it open and found that the display was working as per normal and I was careful to not tilt it at all and it worked. However, the backlight would flicker whenever the laptop started getting hot and once I accidentally closed the lid and the backlight was gone again. The display works as I see it when I shine a light through the Apple logo. I’m not sure if the issue is the backlight IC on the logic board or the display flex cable as the other posts I’ve seen seemed to give various answers. Thanks a bunch!
This sounds like the eDP cable (incorrectly called LVDS cable) has become damaged (constant movement can break it down). Here’s the needed part 13” MacBook Pro Hinge Left - eDP Cable, Apple P/N 661-02360 Follow this guide to get the display assembly off MacBook Pro 13" Retina Display Early 2015 Display Assembly Replacement and then reference this teardown MacBook Pro Retina Display Teardown from Step 3 to 5. After lifting the antenna assembly off and to the side you can gin access to the other end of the eDP cable to replace it. Inspect the logic board and display connector sides making sure they don’t have any corrosion damage to be sure thats not your issue. That would be the next possibly and check the logic board fully for any hidden wetness. Its possible the humidity was the source of the moisture.
