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Troubleshooting Symptom Charts/Video - 11
Backlight doesn’t
operate
1 Adjust screen brightness setting.
2 Verify that backlight cable connection is secure.
3 Check display cable, inverter board, and logic board
connections.
4 If display cable connection to logic board is loose, replace
brightness and speaker grill.
5 Verify that cables are not pinched or severed.
6 Replace inverter board.
7 Replace display.
8 Replace logic board.