Chosen Solution
Hi all, Recently out of nowhere my MBP 13” (function keys, 2017, no Apple Care, out of warranty) started acting out in the following combination of ways. THE LIST OF ISSUES: Both ports stopped recognizing external display using the usb-c to hdmi adapter I used reliably a while beforeAround the same time my battery started reporting “Service Battery“ stateThe USB-C port closest to user (front) is only taking ~5V when charging, while the other USB-C port (back) is charging at ~19V (I have current measuring USB-C device)If I want to use external SSD for backup/data transfer it works on both ports but sometimes I need to plug the other port for charging for device to be recognizedUp until recently, I also noticed that sometimes MBP would shut down when I would close the laptop instead of going to sleep (though after resetting SMC/NVRAM I never experienced this again) WHAT I TRIED: resetting SMC/NVRAMupdating system to the latest MacOS versionrunning diagnostics (only service battery was reported, which later on disappeared)plugging/unplugging cords in different combinationsusing different usb-c hub with direct power-in that used to work before as well Here is the charging report from CoconutBattery For back USB-C port:
For front USB-C port:
QUESTION: Is there any chance this issue will be resolved (especially the one about recognizing external display) if I would just replace MBP battery? Or is this almost definitely characteristic of logic board issue? I was thinking about taking up a task of buying a replacement kit and replacing the battery myself while in self-isolation due to pandemic, but would not attempt replacing logic board myself. Thank you in advance for your help!
Well, that’s interesting! One port is charging with 2.26 Watts (I assume its the 5 Volt port) and the other 4.77 Watts 19 Volts on the good. Sadly, I haven’t seen this problem, so you’ve taught me something new! Each port has its own power controller which then feeds the logic board its power. So I would say your logic board needs attention.
Hello, i have another kind of issue with mine .. When i plug one or second usb-c connector (under monterey), my macbook shutdown and don’t restart it is possible that this kind of issue could be possible with oxydation of both ports. I try to dismount my laptop soon to see if ports have oxydation or altered by humidity, in the tattoo woorkshop of my son it’s too wet. Thanks in advance for your answer.
