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What can be causing this issue and how can we fix it? What should be our next step?

L3500_VWR ->.0230 with beep L8100 -> .0494 with beep L7400 ->.1118 with beep L7230 -> .0216 with beep L7220 -> .0216 with beep L7210 -> .0216 with beep L7660 -> .4365 with beep L7600 -> .4257 with beep L7030 ->.4951 with beep L8410 -> .9504 with beep L3500_VXT ->.1995 with beep

sorry yes that was voltage reading, it say .4032 in diode mode and it beeps.

L3500_VWR -> 0v L8100 -> 0v L7400 -> 0v L7230 -> 0v L7220 -> 0v L7210 -> 0v L7660 -> 3.375v L7600 -> 5.164v L7030 -> 12.17v and then drops to 10.22 L8410 -> 0.013v L3500_VXT -> 0v L9080 -> 0.032v

Just double checked, C6581/PPBUS_G3H and C3504_VWR:1/PPBUS_G3H have the same voltages. The machine is not recognized in DFU mode. I have attached pictures for to see the damage, we washed with deionized water and it is now clean.

Hello, We have a A2251 MacBook Pro that has water damage across the board, when connected to a port the board uses 5.09v and .28a and after a few seconds switches to 20.6v and 0.05a. We have a measured some voltages on the board: C6581/PPBUS_G3H -> 12.63v C3504_VWR:1/PPBUS_G3H -> 12.32v...

I understand that this line is missing and we need to find a source element which is generating this line. Basically we have to trace back to the source and understand why source of the link is not working. Is that correct approach? And also one more questions --> how to find the source of this...

5 -> .8 7 -> .8 8 -> .0 12 -> 4.4

When we removed the U5700 chip the amps went up to 0.08 and after placing it back the amps went back down to 0.00. Is U5700 at fault here or is it some other component?

I have Removed U5700, it looks clean and no visible damage underneath it. The behavior of the board has not changed and is still using 5.27v and 0a. Should I return the chip?

We have a question, If we have a short on the board then we should have amps as well right? The board is not using any amps currently.

R5700 is burnt and the board has a hole in it, I have attached a photo for you to look at. We also bypassed R5710 with a tiny wire and have power there.

We are missing power on 3V8_AON and diode mode to ground is 346ohm.

P3V8AON_EN_R is now restored and it is showing 4.49V. Is it correct voltage? Can you tell us what to check next?

R5710 is disconnected from the board, is it possible to make a direct connection? Would we be able to replace it with a similar element or would it have to be the exact match?

We are missing P3V8AON_EN_R and PPBUS_AON IS 12.33V.

Hey guys, We have a A2485 Mac book that uses 5.17v and 0a, we measured some voltages on the board and got this result. U5500 -> U5501 .2 UF400 -> RX421 9 UG400 -> RG012 3.3-3.6 LF000 -> 8.8 LF100 -> 8.8 CF800 -> 0 CR805 -> 0 CR853 -> 0 What could be the problem and what should we do next?

Here are some of the voltages we checked on the board. P3V3G3H_VSW/L7660 -> 3.36V PPV5_GS3/L7600 -> 5.13V PP1V8_SSD1/L9030 -> 1.79V PP0V9_SSD1/L9020 -> .9V PP2V5_SW2_TPS62180_SS/L9081 ->.022V P0V9SLPDDR_SW1/L7817 -> .899V P1V1SLPS2R_SW0/L7814 -> 1.1V PVDDIOMEMGPU_PHASE/LA870 -> 0V...

We checked the ports and all of them have the same behavior, we switched the board to another donor A2141 MacBook and the ports are using 20.6v and .14a across all ports and is not charging the battery.

Hey guys, We have a MacBook Pro model A2141 that had coffee spilled on it and did not boot up, it uses 20v and 0.12a. We inspected the board and found some corrosion and cleaned the board. Would you guys have an idea of what the problem is and how to approach it? I have attached a few photos...