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I've solve the issue with the Voltage drop. It was C7030 the stupid tantalum cap. I was removing and replacing the Q7080 and Q7085 after I replace them I've noticed that the voltage is ok but slowly goes down, and I start thinking why the voltage is goin down. And it click in my head because the...

I've put good know battery but still nothing. But I hear noise. Its like a hand watch clicking around the Area of Q7080 and Q7085

I have it plugged on charger only, no battery. I replaced Q7085 ONLY because the voltage on in and out pins on Q7080 was ok. The voltage on Q7085 on pins 1 2 3 is 16.1V but on out is 1.4V. And DCIN pin Pin 2 of U7000 is 16.2 V, that connects to R7003

820- 2849 A Have green Light but PPDCIN_G3H_INRUSH is 1.4V on pins 5,6,7,8 on Q7085. The funny thing is when I plug the charger and check voltage on the pins 5,6,7,8 of Q7085 the voltage is 12.6 v and its start to drop in 30sec to 1.4 V. And on Q7080 voltage is good on all pins. I've checked...

PPBUS_G3H is 7.8V and PPDCIN_G3H is 19.4V

I have 12 inch MacBook A1543 Is not powering on. I started measuring the power rails and I've noticed that I'm missing PP5V1_S4SW. Also U7100 is heating up as hell, and the other strange thing is on pin 56 of U7100 the PPVIN_G3H_P3V3G3H Is around 20V and according to the schematics should be...

I washed the board again and is working now. Thank you Duke

I have 18v when the trackpad is plugged

i checked all for continuity they are all good

This is the area where the water was

All of them on pin one they have 3.3v and R1300 and R1303 pin 3 is 3.3 v, R1302 pin 2 is 3.01V and R1302 pin 2 is 3.29

I don't have any pulse it's 0 v. I always use original charger and yes its 85W

And yes the board was water damaged

i can't do pram reset but if i press the option then gives me an option to choose the boot device and if i try to connect to wifi i can actually type. So the keyboard working when i have the boot options. ANy ideas

Water damage affected area was from U5870 all the way across the opposite side

PP5V_S3 was missing and that took me to U7501 and from the Enable signals P5VS3_EN was missing the other 2 enable signals were present and the chip was getting power, so this took me to PM_SLP_S4_L and that signal was missing. That signal comes from the PCH and after based on Louis videos i was...

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All those rails are present

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I have 3.3v on pin 49 and pin 22 on U5701, also i have 3.29V on pin 4 and i have 3.29V pin 51(SMC_PME_S4_WAKE_L). What other missing signals would make this chip not functioning ?