Macbook Pro A1990 PP5V_G3S missing

[geiti94]

PP3V3_G3H_RTC_X is 3.3V. PP1V8_SLPS2R have 1.81V. U6940 pin 10 are at 0V

[mon2]

Short / press the power button @ SWK002. Does this change anything.

[geiti94]

nothing changes. CHGR_RST_IN stays still at 0V. Faulty U6940? I Tryed it to reflow it too with flux and nothing changed. is there any mod for bypass U6940 for testing before i order then a new one?

[mon2]

What is the default voltage to ground on PMU_ONOFF_L? This should be a logic '1' since there is a pull-up to PP3V3_G3H_RTC_X @ R8015. When the power button is not pressed, the default voltage should be 3v3. There should also be a button or shorting pads @ SWK000 (opposite of the PCB) for the same purpose.

[geiti94]

i replaced now U6940 with one of a know working board but icloud locked. Pin 10 still 0V. Voltage at R8015 is 3.3V.

[geiti94]

that board is strange. all volltages are here. looks like a broken t2 firmware now but i cant enter dfu mode. when i check on the pad dfu_status stays at 0V instead of 1.8V