02-11-2019 09:17 AM
Update after using the Anker PD charger now for a few days. Indeed, it does not seem to be charging very quickly It took all night to recharge from a deep discharge. Before putting it away for the night, I was doing a major system upgrade (Linux Mint 18.3 to 19) and I watched the battery drain from around 20% while plugged in - hoping the upgrade would finish before the laptop completely died. Around 15% charge I thought to turn the display brightness way down, which slowed the discharge rate but didn't stop it. Luckily my upgrade completed before the machine died, but it was close. Bottom line, it doesn't charge as fast as it discharges.
02-11-2019 09:43 AM
A quick update: I had replaced the failed mosfet fixing the charging system and a month later it failed again. I was thinking it would be the same component at fault but it turns out it was the flex cable from USB C board to motherboard, loose connection.. Tightened it up and works fine.
02-19-2019 03:45 PM
It is not on the USB c board, it is located on the bottom side of the motherboard, right next to the 17 mosfet, I'll dig up a picture and show you. I had the whole repair process outlined with pix and everything on this site but I think Lenovo tossed it to try and avoid complications due to their fault in the engineering process leading up to these failures.
02-19-2019 04:03 PM
More info here; https://www.badcaps.net/forum/showthread.php?t=70313
I'm supplying a pic of the actual controller chip that is either the cause or directly connected with the cause of the issue causing the mosfet to fail.