820-3536 - Not charging

[rvanpruissen]

Hi,

Liquid damaged board works and recognizes the battery but won't charge it.

- Current sensing (main and battery) is good
- Charger FET is not opening

Likely unrelated:
- Fixed long screw damage (6 traces)
- WiFi not working (on daughterboard)

Any suggestions? My next move would be replacing u7100.

Rick


PS The sticky about using a good charger made up for my subscription fee

 

[rvanpruissen]

Addition:
- CHGR_BGATE = 12V
- PPVBAT_G3H_CONN = 8....0V (drops after connecting charger)
- PPVBAT_G3H_CHGR_R = 12.6

 

[dukefawks]

Is the battery status in OSX reported as "normal"?

 

[rvanpruissen]

It says: replace now.

 

[dukefawks]

Well, I think that does not need any more explanation.

 

[rvanpruissen]

Ok thanks. So the "Replace now" message is always caused by the battery?

 

[dukefawks]

Yes, it is dead.