MacBook Air no backlight and all you see is black screen? Typically, MacBook backlight not working issue is caused by the damage of backlight IC. However, the situation is much more complicated in this video. The damage of booster diode leads to the no backlight issue of MacBook Air. Check the video for the detailed diagnosis & troubleshooting process and bring your MacBook back to life.MacBook air no backlight repair #3fix macbook no backlight#3macbook backlight not working'#3fix macbook backlight issue#3macbook backlight repair#3macbook air dark screen repair#4macbook dim screen repair#5fix macbook black screenmacbook no backlight troubleshooting#3macbook backlight fix#4macbook airmacbook air 2015no backlight#7logic board repairmacbook logic board repairbacklight issue#2