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Troubleshooting Symptom Charts/Video
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Video
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Display is very light
or totally white
1 Adjust screen contrast and brightness settings.
2 Verify cable, inverter board, interconnect board,
daughterboard, and motherboard connections.
3 Replace inverter board.
4 Replace interconnect board.
5 Replace interconnect-to-display cable.
6 Replace display.
7 Replace daughterboard.
8 Replace motherboard.
Display stopped
working or dimmed
but is fine now
1 PowerBook 520/520c: If temperature is under 5° C or over
40° C, this reaction is normal.
2 Let screen warm up for 30 minutes.