Chosen Solution
After spilling coffee on a Macbook Pro A1398 (Mid 2015) the device wouldn’t power on consistently. (Sometimes it did, and when it did the screen seemed to work) I opened it up and found corrosion in a couple areas on the logic board. So I replaced the MLB with a replacement part from iFixit. Everything seems to run fine now, but the built in retina display doesn’t turn on and is not detected from the system profile. An HDMI external monitor works fine, however. What I’ve tried so far:
- SMC and PVRAM reset
- Wiped the SSD and reinstalled High Sierra from the recovery partition
- Tried re-seating the internal display connector The display connector looks fine. I also opened up the display assembly to see if there was visible damage there, but everything looks ok (to my untrained eyes). Images of display connectors: https://imgur.com/a/VdQA2 Any clues?
Rubber the lvds connector with office rubber ,a little bit, and clean it with alcohol , dry it out and test it again. It seems that is not make contact well. If it have pad that push it if it exist remove it otherwise try to insert it as it was before.
