iBook (14.1 LCD 16 VRAM) Troubleshooting -
9
Symptom Charts
Video (S-Video and Composite adapter)
No video on an external device
1. Make sure you are using the S-Video and Composite adapter cable.
2. Verify TV or VCR is set up properly with correct source.
3. Try different TV or VCR. Check owner’s manual for TV or VCR.
4. Replace adapter cable.
5. Replace logic board.
The display is rolling (PAL instead of NTSC)
1. Make sure you are not using Apple's A/V Video Cable.
2. Make sure you are using the S-Video and Composite adapter cable.
3. If in Mac OS 9, go to Monitors control panel and change the resolution from a PAL
setting to an NTSC setting.
4. In Mac OS X, go to the Displays system preference to change the setting.
5. Try a different TV or VCR.
6. Try a different adapter cable
7. Replace logic board.
No display, or dim display, but computer appears to operate correctly
1. Remove any connected peripherals.
2. Try known-good power outlet, power adapter and power cord.
3. Press F2 (with the fn key pressed and not pressed) to increase the screen brightness
setting.
4. Reboot the computer—hold down the Control and Command keys and press the
Power button, or press and hold the Power button for 5 to 10 seconds to shut down the
computer, then press the Power button to restart.
5. Verify backlight cable and LVDS cable connections are seated properly and that the
cables are not damaged (refer to display assembly replacement instructions).
6. Replace display assembly.
7. Replace logic board.
Display shows ghosting (signal reflection)
1. Verify that cables are correctly installed and firmly seated.
2. Replace video adapter.
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