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Model A1990 / EMC 3359. Released in May 2019 with new 6-core and 8-core processor options.

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2 USB-C ports (top left and top right) not working

Hello, 2 of the 4 USB-C ports have stopped working (top left and top right), though top left sometimes will intermittently work. The diagnostic from Apple store says they still receive power, which means they’re not completely fried or disconnected.

I was in vietnam for most of 2020, using my laptop without a power converter, because it was my understanding that the 87w power cable automatically regulated the power coming in. I also plugged a USB to HDMI converter into one of the ports, and noticed this issue show up shortly after that. Any thoughts? Do I need micro-soldering skills to replace the ports myself?

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There is two issues here the physical port getting worn or damaged or the power/interface logic which is part of the logic board.

Replacing the physical port will require taking out the logic board to gain access to the screws that hold it and offer the needed clearances MacBook Pro (A1989, A1990, A2141, A2159, A2251, A2289, A2338 Mid 2018-2022) USB-C Board Sadly, we don’t have a guide to take the logic board out of this exact model but its not overly hard. Follow this guide to take the bottom cover off MacBook Pro 15" Touch Bar 2019 Lower Case Replacement. Then jump to this video guide MacBook Pro 15" Touch Bar Late 2016 Logic Board Replacement as well as review MacBook Pro 15" Touch Bar 2019 Teardown

Beyond that you’ll need deeper skills to diagnose what Intel JHL7540 Thunderbolt 3 controller or Texas Instruments CD3215C00Z (power controllers) need replacing.

To try to figure things out I would get a good USB-C power meter

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MacBook Pro (A1989, A1990, A2141, A2159, A2251, A2289, A2338 Mid 2018-2022) USB-C Board

$14.99

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MacBook Pro 15" Touch Bar 2019 Teardown

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MacBook Pro 15" Touch Bar 2019 Lower Case Replacement

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5 - 10 minutes
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MacBook Pro 15" Touch Bar Late 2016 Logic Board Replacement

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45 minutes - 1 hour

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Thank you Dan, this is very helpful!! I will look into these articles/vids and report back when I get it fixed up :)

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ivan durst crwdns2934231:0crwdne2934231:0
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