Logic Board Repair Case Studies
820-02098 No Backlight Repair – UP800 & QP800-QP803 Replaced
Detailed board-repair case for a 2021 14-inch MacBook Pro A2442 with 820-02098 logic board, water damage and no backlight. Replacing UP800 restored backlight only temporarily; QP803 later failed short, and the final fix was replacing all four LUXE MOSFETs QP800-QP803 as a set.
