Won't charge. Think it is some protection circuit on MacBook

Question

MacBook Pro 15" Retina Display Mid 2014

2.2 GHz (Turbo Boost up to 3.4 GHz) or 2.5 GHz (Turbo Boost up to 3.7 GHz) quad-core Intel Core i7 processor with 6MB shared L3 cache.

20 个问题查看全部 | 46配件购买

torben poulsen @torbenpoulsen

声誉积分: 1

发帖于: 2018年6月23日

更多选项

Won't charge. Think it is some protection circuit on MacBook

Hi, so i think the 12V and GND on my macbook pro got shortet by a small piece of metal getting sucked in by the magnet.

Now my mac will not charge. I have tried with 4 different chargers.

HOWEVER it will charge if i use the cheap China charger i have in my car.

So thats why i think it could be some protection circuit or whatever that was triggered by the short to the MBP magnetic "charge area", and that the cheap china charger does not care about this safety mechanism.

Any ideas how i get charging again (besides from living in my car)?

已回答！ 显示答案我也有这个问题

这是一个好问题吗？

是否

得分 0

添加一条评论

1个答案

已选择的解决方案

arbaman @arbaman

声誉积分: 102.6千

10

56

291

发帖于: 2018年6月23日

更多选项

You've gone to the right point straight away :) Chinese chargers don't have the built in logics that Magsafe have, thus push in voltage irrespective of the logic board protection circuitry. A cheap aftermarket charger will probably be working "fine" also with the ordinary house power source. However, without protection, your Mac would be more exposed to overvoltage and overpower and you'd risk frying your logic board one day or the other. You can try replacing your magsafe board..it might be the damage is limited to that part..you'll find the replacement part here on ifixit too, linked on the guide:

MacBook Pro 15" Retina Display Mid 2014 MagSafe DC-In Board Replacement

In case magsafe board replacement won't solve your issue, you'll need a technician focusing on component level repairs to fix it.

这个答案有帮助吗？

是否

得分 2

1条评论:

Here's a bit more on the cheap chargers: Lacking safety features, cheap MacBook chargers create big sparks. I would strongly recommend you work on getting your system fixed it would be a shame you killed your system or worse yet have your system start a fire!

The MagSafe DC-In connector in its self won't be all you need here. I'm sure you've damaged the voltage comparator chip on the logic board.

由 DanJ 完成的 2018年6月23日

添加一条评论

Here's a bit more on the cheap chargers: Lacking safety features, cheap MacBook chargers create big sparks. I would strongly recommend you work on getting your system fixed it would be a shame you killed your system or worse yet have your system start a fire!

The MagSafe DC-In connector in its self won't be all you need here. I'm sure you've damaged the voltage comparator chip on the logic board. — DanJ

MacBook Pro 15" Retina Display Mid 2014

Won't charge. Think it is some protection circuit on MacBook

1个答案

添加你的答案