MacBook Air has a dim screen. It can power on with chime sound after you press power button, but you barely see anything on the screen. If we use a flashlight to check the screen, we can see a dim picture showing on the screen. It is the no backlight issue of MaBook. I checked the motherboard and found some chips had been damaged. After fixing the motherboard, now the MacBook Air is working fine.
Here is the clip of fixing the MacBook Air motherboard. Thanks for watching, and wish you have a good one!
