Only top right TB3 port working on MBP 2018 13" - Akitio Node Pro w/ Vega 64
 
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Only top right TB3 port working on MBP 2018 13" - Akitio Node Pro w/ Vega 64  

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McBanjo
(@mcbanjo)
Active Member
Joined: 2 years ago
 

I recently changed the stock PSU in my Akitio Node Pro to the Corsair SF600 with paperclip trick - and seemingly at the same time the TB3 ports have stopped working on the left and bottom right for the eGPU for MacOS. It doesn't charge or connect at all, some drives seem to work in the same ports and original MacBook charger works.

Only the top right port works consistently. I've tried an SMC reset and NVRAM while plugged into the left port and it managed to start up again once or twice but it won't hot plug and doesn't fix the problem permanently.

Wondering if anyone's had similar issues? It seems fairly strange. Anything else I can diagnose before taking the MacBook into Apple?

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

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itsage
(@itsage)
Illustrious Member Admin
Joined: 4 years ago
 

It's possible the SF600 PSU doesn't work well in your configuration. Have you tried putting the original PSU back in and see if that helps?

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McBanjo
(@mcbanjo)
Active Member
Joined: 2 years ago
 

Will give that a go and post back...

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

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omardesu
(@omardesu)
Estimable Member
Joined: 2 years ago
 

It’s possible the ports are fried.  Happened to me multiple times using HDMI to USB-C adapters.  Probably need to just bring it into Apple.

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McBanjo
(@mcbanjo)
Active Member
Joined: 2 years ago
 

I tried putting the old PSU back in and still a no-go. So I'm thinking it's the Thunderbolt 3 ports fried on the MacBook Pro, particularly since the issue is independent of the eGPU and other devices aren't working in these ports either. Off to Apple I go!

What's really weird is that if I boot via an SMC reset, it works fine and the eGPU boots up and charges properly (on my MacBook 13" 2018 with T2 chip I do this by holding Left Ctrl + Left Option + Right Shift for 8 seconds).

Posted by: omardesu

It’s possible the ports are fried.  Happened to me multiple times using HDMI to USB-C adapters.  Probably need to just bring it into Apple.

Good to know. I was using a HyperDrive on a work trip when I first noticed the issue with the ports...

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

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