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Original post by: randy3833 ,


In your troubleshooting, did you happen to reset the PMU? It controls the sleep functions. Just a thought.

PowerBook G3 Series (M4753)

1. If the computer is on, turn it off.

2. Simultaneously press Shift-Fn (function)-Ctrl (control)-Power.

3. Wait 5 seconds.

4. Press the Power button to restart the PowerBook computer.

A hard reset might work if this doesn't. Remove the battery, then hold down the power button for 30 seconds. Wait five seconds. Replace the battery and push the power button.