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Power Mac G4 Troubleshooting

Do you need to repair or troubleshoot a Power Mac G4? Though this is considered to be an outstanding example of innovation and is easy to use, there will be times when users will face problems and need assistance to resolve issues. At these times, getting in touch with an Expert would be the best recourse.

Read below where Experts have answered questions regarding the Power Mac G4.

How to copy or transfer files from a very old unit that is not working?

You could remove the hard drives and use an interface like the one in the following link to save all your data. NewerTech Universal Drive Adapter USB 3.0 - connects any 2.5", 3.5" or 5.25" drive. It would be a good idea to replace it with a new one and transfer the data.

You would need to unplug everything first. Open the side door; the hard drive/s will be located in the lower right bottom. It is held in by one small cross point screw. Power Mac G4 M5183 Hard Drive Replacement - iFixit. It is in a tray which comes out; unplug the cables very carefully as they can be tough. The interface has cables that plug in where those came out. Then it will appear just like an external hard drive on the desktop.

Use Migration assistant located in Applications/Utilities or just drag and drop what you wish to save.

How to fix version 10.3.9 which is displaying a fatal error message?

The fatal error message indicates that the data file has become corrupt, and QuickBooks cannot find the transaction it is looking for.

To fix this, you could try rebuilding the data file: 
Go to File - Utilities, and click on Rebuild; then follow the on-screen instructions.

How to troubleshoot error message “The built-in memory test has detected a problem with cache memory?"

Cache memory is the memory allocated to the system for internal communication. If there is an issue with cache memory, it will mean that there is slightly slower CPU speed. You may not notice it with Word or email or browsing; however, it may affect your ability to work with Photoshop, manipulate pictures, etc.

You could try to reset PRAM:

  • Turn off Mac.
  • Find and hold down the following four keys at the same time:          OPTION/COMMAND/P/R. The command key is the Cloverleaf/Apple key.
  • Turn on the Mac while keeping the four keys held down.
  • Wait until the Mac chimes three times, and then release the keys and let the Mac boot normally.

To Reset Open Firmware (Power PC only):

  • Turn off the Mac.
  • Find and hold down the following four keys:
    The command key is the Cloverleaf/Apple key.
  • Release the keys when you see the text screen.
  • Type in the following exactly, and then press return after each command:
    reset-nvram (press return)
    reset-all (press return)
  • The Mac will restart on its own.

If you still see the message, the Mac most likely will work okay, but may fail at any time. The cache memory cannot be replaced except by a new/repaired logic board.

What could prevent the display from coming on, even though the power button blinks every few seconds?

It could be that the battery is either dead or low.

You could try the following:

  • Shut down the Mac. Open the side door and locate the battery and the PMU button. 
  • The button is a very small - either red or gray in a silver box about 1/4" in size.
  • Remove the battery and note the polarity.
  • Press the button in once. Wait for about 10 seconds, and then try to start the Mac.

If it boots up, the battery may be dead or low. It needs to be 3.6v or higher.

How to get a Power Mac G4 cube to eject a CD?

You could try the following:

  • Turn on the cube and have the mouse button (left if 2-3 button mouse) down until the disk pops out.
  • If that fails, let it finish starting up. If the disk shows on the desktop, drag it to the trash can, and it should eject.
  • If it still doesn’t eject, open ‘iTunes.’ Go to the ‘controls’ menu and choose ‘eject.’
  • If that doesn’t work, go to your ‘applications’ folder and open ‘disk utility.’ If the disk is listed on the left side, click on it and then click on the ‘eject’ button.

One of these should get it out. If none of the above work, then the drive may have died. You will need to get it looked at by a service provider.

The Power Mac G4 provides awesome out-of-the-box power and reliability; however, when the system will not turn on, owners may not know the cause or what to do. It could be due to bad power supply, a bad logic board, or even a dead PMU battery. When users face problems, they will need input from an Expert to solve them. There are verified Experts available at all times to offer solutions to all your problems. 

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