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Question: Why is my MacBook’s charger flashing a dim green light?

So last time I used my MacBook Pro the battery was around 30%. Yesterday I plunged it in so it could charge after 2-3 days without using it and I noticed that the charger had a dim green light (with a clicking sound). My MacBook wouldn’t turn on. I left it overnight to charge (around 12+ hours) because I though my battery must have died within the days I didn’t use it but nothing happened. My battery doesn’t have a lot of circles so I believe it’s generally healthy. I started looking up for an explanation and I found some “solutions”. Well, I tried SMC reset but it didn’t work for my MacBook and I also unplugged the battery connector and plugged it right back, which also didn’t work. The only thing I haven’t tried yet is using another adapter but I can’t find any person who can lend me one. My first question is why the adapter has the dim green light, is there’s any specific reason for example is it because there’s is a problem with the battery? And my second question is, if I switch adapters and the same thing happens, that means the battery has a problem?


Thanks in advance!

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Answer:

Turns out the original charger was “faulty” somehow after 2 years. So I bought a new charger and changed the logic board.

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Nov 13, 2017 4:55 AM in response to SophieeChatz In response to SophieeChatz

Hi,


First, look at the end of the power adapter and the connection on the Mac to see if it's blackened. If so, the clicking sound is something shorting out or arcing. This could be caused by a pin on the MagSafe/MagSafe 2's connector being stuck, or the power adapter itself, or an issue with the MagSafe/MagSafe 2 DC In board or the logic board, or the battery.


Any of the above could account for the dim green light. The only thing you can really rule out is the power adapter if the same thing occurs with a different power adapter.


Unfortunately no, if the same thing happens it's an issue with the battery or one of the above.


I would bring the Mac and power adapter to an Apple Store “genius” bar for a free diagnosis: https://support.apple.com/contact

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Question marked as Helpful

Nov 13, 2017 4:55 AM in response to SophieeChatz In response to SophieeChatz

Hi,


First, look at the end of the power adapter and the connection on the Mac to see if it's blackened. If so, the clicking sound is something shorting out or arcing. This could be caused by a pin on the MagSafe/MagSafe 2's connector being stuck, or the power adapter itself, or an issue with the MagSafe/MagSafe 2 DC In board or the logic board, or the battery.


Any of the above could account for the dim green light. The only thing you can really rule out is the power adapter if the same thing occurs with a different power adapter.


Unfortunately no, if the same thing happens it's an issue with the battery or one of the above.


I would bring the Mac and power adapter to an Apple Store “genius” bar for a free diagnosis: https://support.apple.com/contact

Nov 13, 2017 4:55 AM

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Dec 26, 2017 5:50 PM in response to SophieeChatz In response to SophieeChatz

Turns out the original charger was “faulty” somehow after 2 years. So I bought a new charger and changed the logic board.

Dec 26, 2017 5:50 PM

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Question: Why is my MacBook’s charger flashing a dim green light?