Chosen Solution
The LCD backlight starts working after MacOS is 1/3 booting up. Before that, the LCD backlight is not turning on. I can tell because I can see the Apple logo if I point a flashlight on the screen. The issue if I wanted to bring up Startup Manager, I can’t see anything. I can only see the Startup Manager after holding down the Alt/Option key using a flashlight. Can somebody please advise what could have caused this and if there’s a way to fix it? Appreciate any feedback. I have done the SMC and NVRAM/PRAM reset.
Can be a bad Lid/Close Sensor Replace reed switch/hall effect on MacBook Pro
