Macbook A1466 (820-3437) PPVBAT Short

[Instafixx]

PPVBAT_G3H_CHGR_REG is shorted. Diode Mode Readings is 0.137 after removing the fuse.

Tried Injecting Voltage but not taking any amps.
Removing Q7130 removes the short. But replacing it and the short comes back

 

[2informaticos]

Why do you consider 0.137 being short?
Do you know how a SCHOTTKY diode indicates???
Didn't even compare with similar working board?

 

[Instafixx]

After removing the Q7130 , the diode reading is .540

 

[2informaticos]

You didn't reply to my questions...

 

[Instafixx]

I don’t know about SCHOTTKY .

Usually ppbus has higher reading

 

[2informaticos]

Yeah, when no shottky diode is involved!

"Didn't even compare with similar working board?"
Was to complicated?

So, what basic voltages do you get on the MLB?

 

[Instafixx]

Didnt have a similar board. But have had issues with 820-00165 when PPBVAT was 0.140s.
Currently Q7130 is removed and fuse is removed. You want me to put it back and give you the voltages ?

 

[2informaticos]

Exactly.

BTW, 00165 has the same low reading on PPBUS_G3H, as NORMAL; read Q7130 datasheet!

 

[Instafixx]

No Magsafe Light.
PPBUS is 8.17V.
SMC_ONOFF_L is 3.4V

 

[2informaticos]

Check U5110 voltages.

 

[Instafixx]

Pin 1 - 3.4V
Pin 2 - GND
Pin 3 - 3.4V
Pin 4 - 2.7V
Pin 5 - 3.4V
Pin 6 - 3.2V
Pin 7 - 3.4V
Pin 8 - 3.3V

 

[2informaticos]

Check voltage and diode mode on SCL/SDA lines of battery bus.
Be sure R7100 is good.

You may need to reball/change SMC.

 

[Instafixx]

SCL/SDA -
Diode Mode is 0.559
Voltage is 3.4V

R7100
Voltage is 3.3V on both Pins. I think its good

 

[Instafixx]

Reball SMC. Still the same.

 

[2informaticos]

Change it...