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Hi Guys, No water or whatever liquid and board looks pretty clean, however, no backlight Here is some measurements: J8300 Pin 1 = 0 Pin 3-4 = 5 Pin 6-7 = 3.4V Pin 28 and 30 = 5V F7700 = 12V U7700 Pin 5-8 = 5V Pin 17-18= 0V R7744 - 5V C7744 = 5V Q7700 3-4 = 12V L7720 1 = 5 2 = 0 C7720...

Here is the thing: The originally problem was back light. So i find out the LP8550 was bad and then i replaced. Works! However, the back light is flashing a little bit. Very little Any hint?

no liquid damage.

Hi, i need your help, guys! Here is the thing: I get light in the mouse (both port). However, the USB port doesn't work. Do you guys have any advice/hint ?

Yes, i do. and the touch bar!

Liquid damage around U8400 (no corrosion), i think is bad, however here is some numbers: : BKLT_EN_R = 0V [1] PP5V_S0_BKLT_A = 5V [2] PP5V_S0_BKLT_A = 5V PP5V_S0_BKLT_D = 5V I hope you guys can help me out.

I bought the board view today and the PDF. The motherboard was dead because has a short to ground on PPBUS_G3H rail. I just inject some power on that rail and C6622 gets really hot. So I replaced and everything works fine. Thank you larossmann for all your help.

Yes, i know, but i don't have idea without schematics

Water damage, very small, however, the motherboard looks dead. Top of it, i don't have the schematics and boardview for this MB. Can you guys help me out? Thank you

I will replace and let you know. Thank you

U6201 Pin1 / C6212 - 3.4V C6215-17 = 4.5V

Yes, no chime sound.

Yes, i can. When i plug the headphone, they system recognize as well, however, no sound

The macbook turn on, however, i don't get anything (chime or screen), no light or touch bar. The customer told me he try to replace the assembly and then he drop it after take out the old assembly. Since then, the computer just don't work as before. Any hint?

SMC Replaced and everything looks normal, however, the audio doesn't work. If i plug the Headphone nothing change as well. Any hint from here? Thank you guys

I did, plus i put the board in the super sonic machine.

R7100 smc_reset pin 1 = 3.4v PP5 = 0.04V

PPBUS = 12.36V ACOK = 3.44V from R5187 PIN 1 L7095 = 3.4V

1) Does U7000 have 3.42v on pin 1? Yes, 2) Is R7029 on the board? Yes, 3) Is SMC_RESET_L present? Yes, I replaced the U7100 and i get my PPBUS_G3H, however, my green light still off plus, my 5V is 4V. Do you think i need replace again the U7100? Thank you for sharing your knowledge, Louis & Duke.

I have a board with no water damage or something close to that. The board don't have green light, however, i get 3.42V and 17V I check R5187 (SMC ACOK) Pin 2, I get 3.42V and SMC_ONOFF_L as well. U7000 Pin 1 = 0 Pin 5 = 0 C7008 = 3.42V CHGR_CSI_P Pin 28 = 3.9Ω short to ground (something is...