Chosen Solution
Hi, I discovered that my USB-C port on the bottom right-hand side doesn’t work properly. It works only from one side, meaning that if it doesn’t work I have to unplug the cable turn it around and plug it back again in order to work. I’ve already reset NVRAM and SMC and I also replaced both ports on the right hand side, still didn’t solve my issue. Does this mean that my logic board is faulty? The connector itself looks OK to me. How can I check if it’s the connector? Do you have any ideas what I could try to repair this?
Best regards
I’m not sure your issue is within the systems logic board. The USB-C cable you are trying to use may not be fully wired. I have seen a few cheap single sided wired cables so a bad connection within the socket (or a socket which is not fully wired) can react so the cable doesn’t work in one orientation (same socket flipped over). If this is your issue then the socket assembly will need to be replaced and you got a cheap cable too! Apple’s Thunderbolt ports are fully wired top and bottom. So a single sided wired cable should work! But there’s still the question is the cable good and technically a USB-C cable is not the same as a Thunderbolt cable! And to add more insult here, the cable may not be configured with correct gage wire so power is not able to travel thru the cable or at a reduced rate. So make sure you get a good cable and the correct one for the expected task.
Hi Hans, I met with the same issue with you. The Type C port of my MacBook 12’’ 2017 (which only has one Type C port on the left) experienced short circuit due to fluid. Then it could only worked one way just like yours. I went to Apple Store and they replaced the Type C port twice for me, and the problem could not be solved. The technical staff considered that this was the issue of the logic board (though he told me that my logic board looked okay with no obvious problem in appearance). They did not take further action (as my warranty has expired). I also wonder how this was caused and how it could be addressed without replacing the whole logic board. Best regards
