If your MacBook has no backlight, you may still see a faint image when you shine a light on the screen. This typically indicates a backlight system fault.
Common causes
- Display flex cable issues
- Backlight driver/circuit problem on the logic board
- Liquid damage corrosion
- Display assembly faults
What helps diagnosis
- Does the issue change with lid angle?
- Does an external monitor work normally?
- Any liquid spill history?
iQube Tech Care can confirm whether it’s a display cable/assembly issue or a logic board backlight circuit repair.