MacBook doesn't turn on, no light on magsafe 2 charger

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MacBook Pro 15" Retina Display Mid 2012 Repair

2.3GHz, 2.6GHz, or 2.7GHz quad-core Intel Core i7 processor (Turbo Boost up to 3.7GHz) with 6MB shared L3 cache.

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Jeroen @kmon

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发帖于: 2019年5月16日

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MacBook doesn't turn on, no light on magsafe 2 charger

Hello everyone,

Last year the charger of my macbook got faulty and stopped working, also the macbook turned off.

Lately I aquired myself a new original magsafe charger 2(85 watt) but sadly this did not help. The macbook won’t turn on and the indication light on the charger stays off.

The battery wasn’t its best anymore, I did have a battery service message and sometimes the macbook would go off around 35%.

What could be the cause of the not turning on/charging? and is it fixable ?

Thanks in advance

Jeroen

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Dan @danj

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If the MagSafe cord LED is not lighting that’s a sign the systems MagSafe connector needs cleaning or replacing. Review this Apple T/N Apple Portables: Troubleshooting MagSafe adapters Jump down to point #7

Here’s the needed MagSafe connector for you system MacBook Pro 15" Retina (Mid 2012-Early 2013) MagSafe 2 DC-In Board. You could also have a bad I/O cable as the power goes to the I/O board and then through the I/O cable to the main logic board MacBook Pro 15" Retina (Mid 2012-Early 2013) I/O Board Cable Follow this guide MacBook Pro 15" Retina Display Mid 2012 MagSafe DC-In Board Replacement

If you disconnect your battery your MagSafe charger should be able to run your system.

产品

MacBook Pro 15" Retina (Mid 2012-Early 2013) MagSafe 2 DC-In Board

$24.99

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MacBook Pro 15" Retina (Mid 2012-Early 2013) I/O Board Cable

$19.99

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Thanks for the suggestion I wil take a closer look to the connector. I will recieve a pentalobe screwdriver so I can inspect the inside of the macbook and decide if i need a new DC/IO cable. I will report back if i got any results!

由 Jeroen 完成的 2019年5月16日

I ordered the parts and tools. This week I'm going to replace the mentioned parts. I will update with results.

由 Jeroen 完成的 2019年5月20日

I replaced the parts, and the magsafe does have a signal now. It's orange seeming its trying to charge. But when I press the power button I don't get any response yet. Is it possible dat its needs more time cause the macbook being drained for a long time?

由 Jeroen 完成的 2019年5月23日

Disconnect the battery and the MagSafe, then press and hold the power button a good minute. Now plug in the MagSafe only! The system should spontaneously start. If it doesn't then your logic board has issues! Did you have a liquid spill at one point?

由 Dan 完成的 2019年5月23日

I will try this as soon as I can. Do I connect the magsafe while i'm holding the button? I checked the board and the waterindicators, no sign of any water damage.

由 Jeroen 完成的 2019年5月23日

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Thanks for the suggestion I wil take a closer look to the connector. I will recieve a pentalobe screwdriver so I can inspect the inside of the macbook and decide if i need a new DC/IO cable. I will report back if i got any results! — Jeroen
I ordered the parts and tools. This week I'm going to replace the mentioned parts. I will update with results. — Jeroen
I replaced the parts, and the magsafe does have a signal now. It's orange seeming its trying to charge. But when I press the power button I don't get any response yet. Is it possible dat its needs more time cause the macbook being drained for a long time? — Jeroen
Disconnect the battery and the MagSafe, then press and hold the power button a good minute. Now plug in the MagSafe only! The system should spontaneously start. If it doesn't then your logic board has issues! Did you have a liquid spill at one point? — Dan
I will try this as soon as I can. Do I connect the magsafe while i'm holding the button? I checked the board and the waterindicators, no sign of any water damage. — Jeroen

Simon Kara @simonkara 声誉积分: 13 1 · Answer 1 · 2022-01-22T20:39:27-07:00

Simon Kara @simonkara

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I have similar problem, after changing a battery, my touchpad and keyboard wouldn’t work, replaced touchpad and ribbon cable, so keyboard and touchpad back in business.

Now MagSafe charger will not light up and I can’t charge my early 2015 MacBook 13” retina.

So make it short I even changed MagSafe board and tried another charger with no results! And all started with changing a battery, did not have any problems before, just battery replacement warning. Any suggestions ? Thanks

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Jessica Parnelli Fawkes @jessica_fawkes 声誉积分: 983 6 1 1 · Answer 2 · 2019-05-16T09:05:23-07:00

Jessica Parnelli Fawkes @jessica_fawkes

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Extremely worn battery? Miscalibration?

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Does that make the charger not do anything? I did look up some articles but almost all of them talked about a macbook that could be turned on or a charger that functioned. Mine doesn't have both of the options.

由 Jeroen 完成的 2019年5月16日

Maybe try a different charger? Or try charging a different macbook with yours.

由 Jessica Parnelli Fawkes 完成的 2019年5月16日

Hold the power bottonm without the MagSafe after 45 sec plug in the Magesafe while still holding down the power bottom , wait for the light then let go of the power bottom and finally press the power bottom again, always works for me , but my battery doesn't charge . I fixed a water damage and had it working perfecting for a few months, but After a Mac OS update to El Capitan it stoped working and my Camera as well , this is the only way for me to get it to work ....

由 Ruddy Rivera 完成的 2020年6月7日

Can anyone confirm whether Ruddy’s technique of holding down a power bottom before inserting the discharge unit is legitimate?

由 Andrew Sauk 完成的 2021年11月9日

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MacBook Pro 15" Retina Display Mid 2012 Repair

MacBook doesn't turn on, no light on magsafe 2 charger

3个答案

MacBook Pro 15" Retina (Mid 2012-Early 2013) MagSafe 2 DC-In Board

MacBook Pro 15" Retina (Mid 2012-Early 2013) I/O Board Cable

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