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Troubleshooting Symptom Charts/Video
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- 8
Video
(Continued)
Row or partial row of
pixels never comes on
or is always on
1 Add shim to display cable. Refer to Additional Procedures.
2 Replace display cable.
3 Replace FSTN display (all repairers) or replace active-
matrix display (CPRC/ international repairers only).
4 Replace interconnect board.
5 Replace daughterboard.
Thin white line is
always on at middle of
screen
For FSTN screens (PowerBook 140/145/145B), a thin white
line is normal. For active-matrix screens (PowerBook 170),
return display (CPRC/ international repairers only) or return
computer to Apple.