
7.Replace inverter board.
8.Replace display assembly.
9.Replace logic board.
Computer appears to work, but no video on external device connected to the TV out port
1.The device must be connected to the
2.If running Mac OS X, verify that this issue is also in Mac OS 9.
3.Verify monitor that is used in testing is
4.Try different cable(s).
5.Replace logic board.
No video on an external VGA device connected to the external monitor (DVI- I) port
1.In the Resolution control strip, see if the device is being recognized. If so select resolution.
2.If running Mac OS X, verify that this issue is also in Mac OS 9.
3.Verify monitor that is used in testing is
4.Try another
5.Restart the computer and test again.
6.Replace logic board.
Misc. Symptoms
Latch not working
Note: When the display is being closed, a hook in the top of the display housing should be magnetically pulled down to the latch. When the latch button is pushed, the hook should release and retract into the display housing.
1.Verify hook operation by exercising the latch mechanism.
2.If the hook does not operate properly, replace the display assembly.
3.If the latch or latch button does not operate properly, replace the top case assembly.
Misc. Symptoms Symptom Charts | PowerBook G4 (1GHz/867MHz) Troubleshooting - 16 |