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I have a retina MBP that according to my mum was working last time she put it under charge (with 15% left). However, as of now, I get no reaction at all after pressing the boot key. The screen stays off and I hear no noise. The computer has been under charge for several hours, but the charge indicator is not turning to green.

The laptop is under (European) warranty for the next few months. However, I'm reluctant in trying that route because I think it would be denied (at a charge) and I don't have file vault enabled.

Is there something I can try myself? I'm the kind of guy with a oscilloscope on his workbench.

Edit: The MBP started to work again out of the blue today without any action from my side. See my comment here.

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  • By "boot key" I am assuming you mean power button. Hold that for 10+ seconds and see if there is any change. Now, if you are under warranty for the next few months, why would you think you wee going to get charged for a repair?
    – Allan
    Commented Jul 8, 2015 at 16:43
  • Just for grins and giggles - are you certain that the outlet you have the Apple power adapter is live?
    – Allan
    Commented Jul 8, 2015 at 16:50
  • Yes, I should have specified it better in the question. I've tried holding the power button, and several boot combinations with no success. Apple in Europe is officially honouring only the first year warranty, while applying for a free repair during the second year (the European warranty) is a process known as ECLC, that is often unsuccessful (and in that case you get charged for it). Yes, my power adapter is powering my other MBP just fine :)
    – cedivad
    Commented Jul 8, 2015 at 16:52
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    :-) Had to ask...you know how it is. I supplied an answer to what I think the most likely culprit is. I hope you can get it fixed.
    – Allan
    Commented Jul 8, 2015 at 17:13
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    Since you have the tools, measure the voltage on the magsafe and clean the pins. The two outer are ground, then the 2 and 4 power, while the middle one is data pin. You are looking for 16 Volt.
    – Ruskes
    Commented Jul 8, 2015 at 17:18

1 Answer 1

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It could be something as simple as the MagSafe DC board or it could be the whole logic board. See below:

Magsafe 2 DC-In Board

Normally, I wouldn't recommend that a user change out this part as Apple goes out of their way to make a complex assembly, but since you have an oscilloscope on your workbench....

The part is relatively inexpensive as compared to a logic board and I have fixed MacBooks where this component has failed. Ifixit has excellent tear down instructions on how to get at this component.

You didn't specify which specific model, so I grabbed the 2013 model for reference. The link is: https://www.ifixit.com/Guide/MacBook+Pro+15-Inch+Retina+Display+Early+2013+MagSafe+DC-In+Board+Replacement/17055.

If it isn't the right model, you can find the correct one on their site. I hope this helps...

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