820-3115 PPBUS_G3H 12.3V

[2click]

Hi, have this board with a low ppbus_g3h, tried replacing the SMC but had no effect, still getting 12.3v any sugestions?
pp3v42 = 3.42
ppbus_g3h =12.3v
pp3v3_s5 = 3,3v
pp5v_s5 = 5v

replaced U5010, replaced R5000 and C5020 which where making SMC_RESET_L unstable, still can´t get ppbus_g3h to its correct value, maybe I am missing something...

 

[piernov]

What's the problem and the symptoms? If S5 rails are present the SMC is at least partially working, so PPBUS_G3H at 12.3V without battery would rather be an issue on the charging circuit SMBUS or the charger IC itself.

 

[2click]

Well... the computer is not starting, and I am getting 12.30 at ppbus_g3h which I think is not a correct value.
According to me I have to have a steady 12.6 ppbus_g3h in order for the computer to run properly... correct me if I am wrong. I already changed the ISL and no change... still getting 12.3v don´t know where else to check...

 

[2informaticos]

Board can work with 12.3V too, but will not charge the battery.

Post diode mode to ground on SCL/SDA lines of battery bus.
More than 1% difference can be caused by D6950, or SMC; as you already changed SMC.
Did you disconnect BIL?
You can also remove C6952/3.