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Troubleshooting Symptom Charts/Video - 7
Video
Pixel never comes on
or is always on
1 PowerBook 540c, color active matrix display only: Replace
display (CPRC/ international repairers only) or return
computer to Apple.
2 PowerBook 540: If there are more than five voids (pixels
that are always white), or two or more voids within one inch
of each other, replace display (CPRC/ international
repairers only) or return computer to Apple.
3 PowerBooks 520 and 520c: Replace display.
Partial or full row of
pixels is always on or
never comes on
1 Check cables.
2 Replace interconnect board.
3 Replace motherboard.
4 Replace display.