[SOLVED]Macbook Air 820-00165 PPBUS_G3H 9.3V

[WiFiComputers]

Macbook Air had liquid damage but didn't find major damage, After ultrasonic macbook turns on with no video, ppbus_g3h have 9.3V and other power rails also shows extra voltage than it should be

 

[aprendiz]

Try another DMM..... lol....

 

[WiFiComputers]

So motherboard consuming at a moment .158amp when dc in, I also noticed it is only 11.2ohm resistance at L7320 is it matter in this case, unit is powering up

 

[WiFiComputers]

Can anybody guide me here

 

[dukefawks]

Where was the liquid damage? Is CPU Vcore present? Change the battery in your meter or get another one.

 

[WiFiComputers]

Yes, CPU Vcore is working 1.76volt present.
Liquid damage was near tiny bit near u1900 and u5110 , nothing major anywhere

 

[dukefawks]

USB mouse lighting up?

 

[WiFiComputers]

After replacing battery on meter here is the new readings

PPBUS_G3H 8.60V
PPBUS S5 HS COMPUTING ISNS 8.60V
PPBUS S5 HS OTHER ISNS 8.60v
ppdcin_g3h 8.5volt
pp3v42_g3h 3.44v
ppvrtc_g3h 3.35volt
pp5v_s5 5.15volt
pp5v_s4rs3 5.15v
pp5v_s0 5.15v
pp3v3_s5 3.35v
pp3v3_s4 3.35v
pp3v3_sus 3.35v
pp3v3_s3 3.35v
pp3v3_s0 3.35v
pp3v3_s4sw_sns 3.35v

while testing all power rails, found missing pm_s0_pgood, because no input on pin 8 track was bad beacause of liquid damage, replaced c1950 and u1950
macbook is working fine now.
Thanks to duke for all help.
Promblem Solved