The Firewire ports on my Power Macintosh G4 suddenly stopped working. Why?
Your system most likely needs a logic board reset performed on it. Follow these steps: • Unplug your computer. • Push the power button on the front of the case 2 or 3 times. • Open the case and remove it’s PRAM battery. • Leave the battery out for at least 10 minutes. • On your logic board there is a small reset button, usually a square metal block soldered to the logic board with either a brown or gray button inset into it. Press the button using a ball point pen and hold it for 5 seconds. • Replace the PRAM battery • Reassemble the system. And, also resetting the NVRAM is a good idea follow these steps to perform this task. Start the computer while holding down the Option-Apple-O-F keys The Open Firmware screen will appear. Type in the following: • reset-nvram • set-defaults • reset-all Your machine will restart automatically. If this did not fix the problem, your FireWire ports could be physically damaged and would require a logic board replacement.
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