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27“显示屏,分辨率为2560 x 1440像素 Thunderbolt&MagSafe电缆附件

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Apple Thunderbolt Display randomly stopped charging any MacBooks...

Hey there,

recently, I put my MacBook Pro (2015) on my Thunderbolt Display to charge it up, as I always do. When I came back to it after a few hours, I noticed that it stopped charging, the laptop was around 60%. I tried re-connecting the MagSafe from the Thunderbolt Display and powered it off for a few minutes, but it didn't help - it seems that it won't charge any MacBooks anymore... The display functions normally otherwise, even though it makes a clicky noise when the brightness is at the maximum. It's very silent, but noticeable.

I did some research if this is a common problem, the only thing I found was that its sometimes the MagSafe converters that fail after some time. This is not the case for me, I connected an old MacBook (where the converter isn't needed to charge it) and got the same result - no charging.

The cable coming off the display is in pristine condition, no splits or fraying (yet), so replacing that probably won't solve my problem. The normal power adapter that came with my laptop still functions flawlessly.

My question would be if this happened to any of you as well and how could you fix this? Could this point to a defective logic board? Is it possible to have that repaired or should I get the whole board replaced?

Your help is very much appreciated!

UPDATE: See below what coconut battery indicates, in the bottom I specify the case.

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@highner_ To be clear, the MagSafe chargers connector LED was either Amber or Green and the displays MagSafe connector was not lit at all - Correct?

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1个答案

What happens when you use the original MagSafe charger that came with your system?

Also is the MagSafe chargers LED Amber or Green?

Lets install this gem of an app on your MacBook Pro CoconutBattery with the TB display MagSafe plugged in take a snapshot and post it here for us to see 在已经存在的问题里加入图片

You may want to inspect the MagSafe connector for damage. Review this Apple T/N Apple Portables: Troubleshooting MagSafe adapters

Update (05/12/2020)

You’ll need to take the display apart to get the the MagSafe power connector internally and check it with a volt meter. Here’s the guide you’ll need to follow Apple Thunderbolt Display Thunderbolt & MagSafe Cable Replacement Take the display off following the steps to Step 8. At Step 9 you’ll need to disconnect the left connector (one with the green ferrite choke) this is the MagSafe power connection. Make sure its connected and using a DVM measure the voltage across the pins ( ~ 14 Volts).

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指南

在已经存在的问题里加入图片

难度:

非常容易

2 - 5 minutes

Apple Thunderbolt Display Thunderbolt & MagSafe Cable图片

指南

Apple Thunderbolt Display Thunderbolt & MagSafe Cable Replacement

难度:

中等

50 minutes - 2 hours

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hey, thanks for the tip!

I updated the question with various screenshots from coconut battery.

The normal power adapter that came with my laptop still functions flawlessly, so I don't see that there is a problem with the laptop or its connector. however the display won't charge any other MacBooks, as I said above.

The MagSafe cable of the Display looks perfect though - all pins look great, and there is no fraying. The problem might be inside the Display, at least thats what I was thinking.

cheers!

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