This article describes how a small number of Power Mac G4 Cubes may self-activate the power switch.

Power Switch Information

The power button of the Power Mac G4 Cube is designed to function by sensing changes of static capacitance when a finger touches the power button. The power button is designed to do the following:

• If the computer is off, it can be turned on by touching the power button.
• If the computer is on and awake, it can be put to sleep by touching the button.
• If the computer is on and in sleep mode, it can be woken up by touching the button.
• If the computer is on and awake or in sleep mode, it can be shut off by placing your finger on the power button and holding it in place for at least five seconds.

Symptom

A small number of Power Mac G4 Cubes may exhibit the following without user interaction:

• If the G4 Cube is on, it may turn off or go to sleep.
• If the G4 Cube is off, it may turn on or wake up.

Products affected

• Power Mac G4 Cube

Solution

If your computer is experiencing any of the above symptoms, try these following steps:

1. Make sure the computer is on a sturdy, flat surface.

2. Make sure there is nothing on the top of the Power Mac G4 Cube computer.

3. Check the settings in the Energy Saver control panel. The computer may be in sleep mode according to these settings.

4. Verify the power adapter is plugged securely into the Power Mac G4 Cube computer.

5. Verify the A/C power cord is plugged securely into the wall socket and the power adapter.

6. Reseat the DC-to-DC Converter card.

For assistance with this step, review article 88037: " Power Mac G4 Cube: Power Switch Lights up, but Computer Does Not Turn On ".