The answer does not need to adress the issue with Cinema Display (original G4 PSU have an extra line of 25V for the display that regular power supplies don't). Logitech Mouse Failed To Connect After Latest Mac Software Upgrade 2016 Open RUN. So how would one replace a failing G4 PSU with a standard ATX 1.x or ATX 2.x ? The answer should be using a ATX 20-pin to 24-pin adapter cable for clarity. Be very careful not to touch the capacitor leads or any exposed solder joints on the back of the power supply. Before beginning any work on your Mac Pro: Unplug the computer and press and hold the power button for ten seconds to discharge the power supply's capacitors.
#Replace mac pro power supply removal Patch
This does not make much sense, maybe he meant for the atx 5v trickle to patch into the mac 12v pin position, but his diode diagram says into the g4 TRICKLE POWER position (only thing on the mac side with the word TRICKLE in it is the 28v trickle pinin. The author suggests a pair of 3a diodes to be used for wiring up a +5v trickle (purpose: maintain memory during sleep) into a 12V line that provides operating power.since Apple removed from their website pin assignments information on most older models.įor instance, if one look at reference #2, there are a couple of clarifications needed for the Gigabit PowerMac: There are still a couple of pages - luckily- available today (eg 1 or 2) and some references materials, but I'd like to have a canonical clear answer here on superuser, esp.
This is an attempt to gather a reference page for anyone trying to replace a failing PSU from a Power Mac G4 with an equivalent ATX in the future.
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