820-3115-b Water damaged now wont charge battery

[TBFix]

Corrosion seems to be resolved , Im getting 2.7ohms on pins 17/18. I had ran the jumper using .05mm wire as mentioned above.
Im getting 12.25v on ppbus_g3H.
SMBUS_BATT_SCL = 0.517
SMBUS_BATT_SDA = 0.516

 

[2informaticos]

12.25V not good.
Diode mode readings looks OK.
Be sure to have good continuity for pins 10/11 of ISL6259 and R5280/81.
Post voltage for both lines.

 

[TBFix]

After cleaning around Ppbus_g3h is now at 12.9v and fan spins fast instantly. Battery is still not charging.

 

[2informaticos]

Should be 12.5V (aprox) without battery.
Maybe your DMM has low battery; measure withn other too.

If SCL/SDA have practically same diode reading to ground, then should be SMC, ISL6259, or battery issue.
I recommend you to try first a known good battery; even old, just for test...

 

[TBFix]

What would cause it to be 12.9v ?. edit.... ( I think this is caused by the feedback from current sensing resistors via's not being correct, causing the Isl to output wrong voltage), Dmm is fine (Fluke) checked with different Dmm and Oscope.
I have 2 batteries here both acting the same.
Q7055 is not being switched gate (pin4) and pin 16 of U7000 are reading contiunity.