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After water damage, the on-off button of the MacBooks is usually damaged as it is part of the keyboard. The MacBook is generally in working conditions, but it is not possible to switch it on using the on-off button.

To switch the MacBook on, people use the on-pad power switches. However, in some cases, this does not work. Here, I am explaining another method for switching the MacBooks on in this case.

This is through disconnecting the charger and the battery, then connect the battery after few seconds then the charges.


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  1. How to Turn on a MacBook Air With a Broken Power Switch, How to Turn on a MacBook Air With a Broken Power Switch: passo 1, imagem 1 %32
    • Before proceeding, close your computer and lay it top-side down.

    • Remove the following ten screws:

    • Two 8 mm 5-point Pentalobe screws.

    • Eight 2.5 mm 5-point Pentalobe screws.

  2. How to Turn on a MacBook Air With a Broken Power Switch: passo 2, imagem 1 %32
    • Wedge your fingers between the display and the lower case and pull upward to pop the lower case off the Air.

    • Remove the lower case and set it aside.

  3. How to Turn on a MacBook Air With a Broken Power Switch: passo 3, imagem 1 %32
    • Disconnect the battery. Use your figures or a plastic tool to disconnect the battery connector.

  4. How to Turn on a MacBook Air With a Broken Power Switch: passo 4, imagem 1 %32
    • Reconnect the battery. Wait for few seconds and reconnect the battery.

  5. How to Turn on a MacBook Air With a Broken Power Switch: passo 5, imagem 1 %32
    • Plug the charger. You should see the cooling fan working, even though the led of the MacBook is closed (a sign that the MacBook is switching on).


To reassemble your device, follow these instructions in reverse order.

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Mohamed Helmy

Membro desde: 17/12/2017

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All images are from public posts and for demonstration purpose only. Find the proper guide for your specific device.

Mohamed Helmy - Responder

Hello, thanks for the tutorial. I was wondering if you could help me. I spilled some water on my MacBook Pro, bought in 2015. I cleaned the water off, and if worked fine. However, after I left the Mac to go eat dinner, the keyboard was not working the way it should be. A couple of keys worked, and a couple didn’t. On top of that, a few keys, when pressed, would give me the key I wanted and a number. For example, when I pressed the key z, it would give me z1. The same goes for the numbers, pressing 1 would get me z1. On top of that, numbers 4 and 5 don’t work at all. Also, the delete button, when pressed, would delete AND make my Mac’s screen go a shade darker. I also went to an Apple Store to see how much money it would be to fix it. They weren’t too sure on what the issue was, but they said that they might have to just replace my built in keyboard, which would cost hundreds of dollars.

Thank you so much! Your tutorial was fantastic, and I look forward to your reply.

Yongjing Li - Responder

Hey thanks again for the tutorial. I have this problem and this solution works for me, however; it’s a bit fatiguing to open a computer up everytime you’d like to power it on. and i was wondering if there are any other solutions to this problem, perhaps replacing the power button on the keyboard or the flexcable or something. Thanks again for the tutorial.

Vru Patel - Responder

Thanks, it worked for me

Augustin - Responder

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