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PowerBook G4 (15-inch FW 800_1.5/1.33GHz) Troubleshooting - 37
Hardware Symptom Charts
No display, or dim display, but can display external video
1. Remove any connected peripherals.
2. Open Display system preference panel and check brightness. If works, replace
keyboard.
3. Replace inverter board.
4. Replace the diversity board and cable assembly.
5. Replace display panel.
6. Replace logic board.
Display has repetitive patterns
Replace logic board.
Display shows shifted color patterns
1. Replace LVDS cable.
2. Replace logic board.
Display has permanent vertical or horizontal lines.
1. Replace display panel.
2. Replace logic board.