crwdns2894164:0crwdne2894164:0
crwdns2894186:0crwdne2894186:0

crwdns2893794:0crwdne2893794:0 Minho ,

crwdns2892734:0crwdne2892734:0:

Shuts down when disconnected from AC

crwdns2893800:0crwdne2893800:0:

Hi everyone.

This is a follow-up to my [post|398852]. Thanks to everyone who replied and helped out. I finally got the MBA to boot and just about everything works (keyboard, camera, etc), except for the capability of automatically switching from AC power to battery power.

I have installed a brand new NewerTech battery (the old one wouldn't hold a charge), it t was fully charged by the MBA and recognized by coconutBattery. However, whenever I disconnect the MagSafe, it immediately shutsdown. I tried a NVRAM reset, and SMC reset and a SMC Bypass but nothing seems to solve the problem.

I suspect something on the board given that it was water damaged but I am hoping for a little guidance. I checked the PBus Supply & Battery Charger circuitry (U7100) but haven't found anything obvious yet.

Hopefully someone has some ideas.

@mayer @oldturkey03 @danj @reecee @rany

crwdns2866306:0crwdne2866306:0:

MacBook Air 13" Early 2014

crwdns2892198:0crwdne2892198:0:

open

crwdns2893804:0crwdne2893804:0:

+401714

crwdns2893792:0crwdne2893792:0 Minho ,

crwdns2892734:0crwdne2892734:0:

Shuts down when disconnected from AC

crwdns2893800:0crwdne2893800:0:

Hi everyone.

This is a follow-up to my [post|398852]. Thanks to everyone who replied and helped out. I finally got the MBA to boot and just about everything works (keyboard, camera, etc), except for the capability of automatically switching from AC power to battery power.

I have installed a brand new NewerTech battery (the old one wouldn't hold a charge), it t was fully charged by the MBA and recognized by coconutBattery. However, whenever I disconnect the MagSafe, it immediately shutsdown. I tried a NVRAM reset, and SMC reset and a SMC Bypass but nothing seems to solve the problem.

I suspect something on the board given that it was water damaged but I am hoping for a little guidance. I checked the PBus Supply & Battery Charger circuitry (U7100) but haven't found anything obvious yet.

Hopefully someone has some ideas.

@mayer @oldturkey03 @danj @reecee @rany

crwdns2866306:0crwdne2866306:0:

MacBook Air 13" Early 2014

crwdns2892198:0crwdne2892198:0:

open