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Mac DC Magsafe or I/O board not working? Updated 2023


Why is my Magsafe or I/O board not working? Updated 2022

  • Liquid damage on your Mac.
  • Lightning which has struck your Mac
  • Load shedding damaging your Mac
  • Faulty Apple charger connected to your Mac
  • 3rd party non-Apple charger charging the Mac with the incorrect amount of power.

An Apple Mac that has a damaged Magsafe or I/O board could be as a result of several different factors. It is often difficult to identify the exact root cause, in which case you’ll need to speak to an Apple specialist. 

What are the common signs of a Magsafe or I/O board not working?

  1. Mac doesn’t turn on.
  2. Mac turns on but the screen remains black.
  3. Mac starts then halfway through the booting up process turns off.
  4. Mac stops charging.
  5. You can hear parts moving inside the Mac but the screen remains blank.
  6. There are black marks on the inside of the Magsafe port.

What should you do if your Mac Magsafe or I/O board isn’t working?

If you have a MacBookPro, MacBook Air or MacBook that the Magsafe or I/O board isn’t working:

  1. Disconnect your charger cable and check whether the charging indicator is showing a green or orange sign. If the sign is green and the Mac doesn’t turn on then it might be a charger issue. You also need to check whether there are black marks inside the Magsafe port. Should there be black marks your Magsafe or I/O port could have been burned.
  2. If the next charger doesn’t work try another power adaptor and test with both chargers this time to make sure there is power going to both.
  3. Try and reset the SMC and PRAM. Check out ZA Support’s simple SMC and PRAM reset guide on YouTube how to reset the PRAM and SMC on your Mac.
  4. If this still doesn’t work and you have a Mac where the Apple RAM can be removed try and remove it and see whether the Mac turns on. WARNING removing RAM can cause damage to the Mac if not done properly. If you are not an Apple professional please be careful.
  5. At this point there could be multiple factors causing the Magsafe or I/O board to not power on.

If the light is orange and the Mac doesn’t turn on it might be that the Magsafe or I/O board has completely failed in which case you’ll need to book it in with us. 

What to do if your Magsafe or I/O board is still not working?


As you can see there are a lot of factors that can cause your Mac to not power on. If you have tried our Mac not powering on expert guide it might be a consideration to bring the Mac in for a diagnostic. If you need to book your Mac in for an Apple diagnostic click here.


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