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Model Number A1707. Released June 2017, this MacBook Pro features Kaby Lake processors up to the 2.8 GHz quad-core Intel Core i7 processor with Turbo Boost up to 3.8 GHz.

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MacBook A1707 not charging through USB-C

Hi all.

My Macbook Pro 15” touchbar from late 2017 (A1707) suddenly stopped charging the other day.

I was using the laptop while plugged in when I suddenly noticed my Macbook was running low on battery.

I restarted my macbook, left it for a few minutes and then plugged it back in. My laptop charged again, until it reached about 55% and then I noticed it stopped charging again.

Now, if I leave my macbook unplugged for a while and then plug in the charger, for a brief second my Macbook thinks it is charging, but then almost immediately after stops charging again. My Macbook is now out of battery, so its unusable.

I m thinking this is an issue with the logic-board (perhaps a broken CD3215 , a broken ISL9239  or maybe a blown fuse, resistor or capacitor on the board). I was wondering if anyone has an idea of what it might be, or how to start debugging this to find the broken component?

Also, if anyone has tips on what equipment would be needed to attempt a repair please let me know.

Any help is very much appreciated!

Best,

Bram

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Esta resposta foi dada inicialmente para outra pergunta.

Either your logic board needs repairs (charging logic) or your battery needs replacing.

To help isolate which you’ll need a USB-C power meter. Do you have one?

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Hi Dan, I have already ordered one, I will write back once I received it

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There’s a good video by Louis Rossmann where he goes through the A1707 charging circuit. He erroneously replaced the TI 3215 chip only to find out it was a bad capacitor (as I recall). Here’s the video: https://www.youtube.com/watch?v=G1pSqm97...

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Now I’m going down that path on my third battery that isn’t charging and have a USB-C meter showing 20v at the USB-C port which quickly goes from around 1.5a to 0a. I’m puzzled as this isn’t the same behavior that Louis Rossmann describes in either of his vids. I may have to send it his way.

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Ok took my MB Pro A1707 to RossMannGroup in Manhattan last Thursday. They emailed me today saying it was ready. Evidently one or more of the wires to the battery com cable connector on the motherboard. This is evidently a rather prone area and likely due to poor workmanship on the board assembly. There wasn’t any trauma or damage to this area. The solder/wire connection was faulty.

So MB Pro now back and running with the third battery from Amazon.

I’m not sure if the other batteries were good or not since this battery definitely behaved differently than the other ones.

Definitely recommend RossMannGroup.com for their quick work at a reasonable price.

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So, check this connector on the motherboard. You’ll have to remove the motherboard to get to the underside where it is soldered. Check each pin of the 4 pin plug to ensure they are live.

First pic is of the swollen batteries and the com connector.

[image|2146495]

This is a close up of the battery com connector.

[image|2146496]

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bramgiessen2 será eternamente grato(a).
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