820-3435-B not detecting battery

TBFix

Member
I had a bit of spillage on the board but nothing around smc or charging Ic. What diode reading should I be getting around C7117 (PPVBAT_G3H_CHGR_R) Im getting 0.113v on diode. Im getting 8.6v on Q7155 pin 5
 
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2informaticos

Administrator
Staff member
That value is good.

Do you get correct PPBUS_G3H voltage?
Check it without battery.

Check R6950 and post voltage and diode mode to ground on SCL/SDA lines of battery bus.
 

TBFix

Member
PPBUS_G3H is 8.59v without battery

r6950 is fine at 10k
Scl/Sda lines are 0.445v diode mode and 3.3v on both

I dont have another battery to verify if battery is bad.
 
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TBFix

Member
As this had water damage as previous mentioned I wanted to make sure board was reading ok before buying a battery as they are expensive and I dont see many 11" mac air's.
 
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