FIXED!
MISSING PBUS SENSE LINE...

Hello, I’m checking a board 820-02773 that arrived showing 5V and a consumption of 0.40A. Present voltages: PPBUS: 12.3V, PP3V08_AON: 3.8V, 5V_AON: 5V. I also have 3.3_UPC present on the USB controllers.

The problem is that I don’t have any S2 voltage present on the motherboard. The PMIC U8100 is not sending out the LDO voltages. Even so, the PMIC is being powered correctly with 3.8V, and its 3.8V and 5V boost voltages are present, as well as its 32kHz clock. However, none of the buck or LDO rails are present.

I’ve tried replacing the PMIC, but the result is the...