VideoTroubleshooting
PowerBook (FireWire)
11
Video
Pixel always on or off
A certain number of pixel anomalies are inherent in display
technology and vary by many factors, including type of
technology. If you suspect that the display contains an
abnormal number of defects, contact Apple Technical Support.
Caution:
Do not use a metal screwdriver to reseat the display
cable or shorting could result. Use a plastic or nylon tool.
Partial or full row of pixels is always on or always
off
1. Check display cable connection.
2. In the US, contact Apple Technical Support.
3. Replace display cable (international only).
4. Replace display (international only).
5. Replace I/O logic board.
Display is very light or totally white
1. Verify display cable and inverter board cable connections
to the I/O logic board.
2. Replace inverter board.
3. In the US, contact Apple Technical Support.
4. Replace display cable (international only).
5. Replace display (international only).
No display, but computer appears to operate
correctly
1. Connect power adapter.
2. Adjust screen brightness setting.
3. Verify display cable, inverter board, and I/O logic board
connections.
4. Connect external, known-good monitor.
5. Verify inverter cable is properly connected.
6. Replace inverter cable.
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