Macbook A1466 SMC ISSUE

[Instafixx]

820-00165

PPBUS was at 8.2V.
I replaced the SMC. still PPBUS at 8.2V with fan spin high. No MagSafe light

 

[2informaticos]

What s diode mode and voltage at SCL/SDA lines of battery bus?

 

[Instafixx]

SCL/SDa are 0.540 diode mode readings

Voltage with and without battery connected is 3.4V

 

[2informaticos]

Did you change LIO board/flex?
What is PPBUS_G3H voltage without battery and LIO flex connected?

 

[Instafixx]

I tried with a different set of LIO board and Flex cable. its the same.
PPBUS is 8.2V

 

[2informaticos]

Check voltage for SMC_BC_ACOK and SYS_ONEWIRE.
Also inspect J9500 pins and traces.
If R7100 is good, replace U7100.

 

[Instafixx]

SMC_BC_ACOK is 3.4V
SYS_ONEWIRE is 3.1V

R7100 is 3.4V on both pins.

Replaced U7100. Still the same

 

[2informaticos]

PPBUS_G3H is 8.2V without battery connected?
If yes, there should be SMC issue.

 

[Instafixx]

Its 8.2V with and without battery connected

 

[2informaticos]

Check if 3V42_G3H really arrives to LIO board.