"Moisture in charging port" and Samsung PMC (Power Management Chip)

[mmarquis]

I've been getting this "Moisture in charging port" message recently and after Googling the symptoms I was very discouraged because "fixes" did not seem to work. Phone would only charge wirelessly and my nexJack Dex would only work when the USB C was plugged in one orientation only, if at all.. Eventually I paid ubreakifix to replace the USB C charging port and the problem has gone away.

Why am I posting this you ask? Seems very straight-forward. However the ubreakifix tech said he found evidence of a PMC failure and some "electricity was leaking" and causing the battery to age faster and will cause other failure modes to the phone such as I was experiencing. I was/am skeptical because the only method he used was to plug some "special" equipment into the USB C port. He was confident that he didn't need to recheck after the port replacement.

Has anyone else encountered a PMC problem with their Note 8? There is actually a YouTube video of a PMC Note 8 replacement---not for the faint of heart.

 

[thedid63]

Hi, test to clean data and cache on USB Setting (system application) and reboot.... It's OK for me now.

Envoyé de mon SM-N950F en utilisant Tapatalk

 

[mmarquis]

Actually I did this without any good result. Replaced the charging port and all is well for my case. Your case, of course, could be different.

 

[iceepyon]

Could be that the port is faulty...

 

[juliospinoza]

Actually I did this without any good result. Replaced the charging port and all is well for my case. Your case, of course, could be different.

Same happened to me few times, especially after going to swim and put my phone in my wet pockets, the solution was to plug the original charger (even with the message of moisture) and reboot. After the reboot the phone was able to charge via USB again, although I charge it wiresly most of the times.
I don't know but several persons helped that method, maybe just a software error.

 

[wkustu]

I have the suspicion they're reading data from the phone, not directly from the hardware; and if that data is the result of a software issue (I'll get to that below), their voltage leak is a faulty assumption. My experience:

Same problem here. I tried a ton of fixes: new cables, new chargers, safe mode boot, USBDevice data wipe, Dalvik Cache wipe, full reset, etc. but none of them worked for me. Closest I got was holding down Bixby button on boot and then plugging in cable-- which would let me charge normally UNTIL I unplugged the first time; would always get moisture detected after that until next reboot....

Was ready to replace hardware at ubreakifix....

UNTIL I found this solution in a single obscure Youtube comment:

1. Reboot
2. Plug in cable on first logo
3. Unplug when 1st logo goes away
4. Quickly plug in again on 2nd logo.

It worked like a charm for me. Now I have no issues.

This confirms to me that there was some odd software flag that was tripped. My guess is that there's a baseline voltage the phone measures for charging, and when the voltage is under that baseline, it throws a moisture error. I bet this sequence causes the phone to measure a new baseline, thus resetting the bad data that tripped the moisture flag previously.

Just a guess, but would make sense.

I've been getting this "Moisture in charging port" message recently and after Googling the symptoms I was very discouraged because "fixes" did not seem to work. Phone would only charge wirelessly and my nexJack Dex would only work when the USB C was plugged in one orientation only, if at all.. Eventually I paid ubreakifix to replace the USB C charging port and the problem has gone away.

Why am I posting this you ask? Seems very straight-forward. However the ubreakifix tech said he found evidence of a PMC failure and some "electricity was leaking" and causing the battery to age faster and will cause other failure modes to the phone such as I was experiencing. I was/am skeptical because the only method he used was to plug some "special" equipment into the USB C port. He was confident that he didn't need to recheck after the port replacement.

Has anyone else encountered a PMC problem with their Note 8? There is actually a YouTube video of a PMC Note 8 replacement---not for the faint of heart.