To clean, get a cloth or cotton swab and remove any dirt you see. Also, beware of invisible, sticky layers that may be the real problem. A layer of dust or grime may be present, preventing the charger from making a proper electrical connection. Here are the five major connection types: Clean it outĪfter confirming that the charger is your issue, check for dirt in all ports and connectors.
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If you bought a charger or a used or refurbished Mac online and your charger doesn’t work upon first use, make sure you have a compatible charger type.Īpple has more information about the different power adapter connectors that work with old and new MacBooks and how you can get the correct adapter, if necessary.
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While you can acquire power adapters that output higher power than what your MacBook requires, using an adapter that doesn’t deliver enough power can lead to performance issues. The evolution of Apple’s MacBook lineup over the years introduced a handful of different power connectors and wattages. This is also the perfect time to check compatibility. If your MacBook still fails to respond, you probably have a problem with the battery or other hardware, and it’s time to take a different approach. If your MacBook turns on and starts charging with a different cable, your charger is likely the culprit. You can also head to an Apple Store or an Apple Authorized Service Provider and ask if you can test your unit. If you get no response, consider borrowing an identical charger (if possible). You don’t want to worry yourself over a faulty outlet. Switch to a different outlet that you know works, and check the charger’s LED indicators - many Mac chargers have some form of these - to see if they respond. When first encountering charging issues, make sure the power adapter isn’t the underlying problem. Make sure the charger isn’t malfunctioning Then, we’ll walk you through possible solutions for each problem. In this guide, we’ll look at the different reasons why your MacBook charger may stop working. It’s important to look at every possibility before assuming the worst.
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Make sure your charger isn’t overheating.Make sure the charger isn’t malfunctioning.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). 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. The author gives pinout numbers for all the rewiring of a psu harness, but neglects to outright SAY to go ATX pinout 9 (5v) to Mac pinin 22.
#HOW TO REPAIR MAC PRO POWER SUPPLY 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.