Chosen Solution
I have a 2015 A1502 13 inch macbook pro. The on board screen has a back light on, but no image. When I use a external monitor it works well. The laptop does recognize that the internal display is connected. I have tried smc, and pram resets to no avail. I have also tried disconnecting and reconnecting the lcd cable on the logic board and that did not work either. Plz help…
Take the bottom cover off and look for corrosion damage around the internal display connector.
