MacBook Pro A2141 / Coffee spilled / does not boot up / 20v 0.12a

[zeydullak]

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 for you to take a look at.

 

[2informaticos]

Liquid damaged board can generate weird symptoms.
You can expect future problems, once you get it repaired.

All the ports have the same behavior?
Did you check any voltages on the board?
Did you test the board with a charged battery?

 

[zeydullak]

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.

 

[zeydullak]

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
PVDD075GPU_PHASE/LA950 -> 0V
PPSOC_S0_GPU_SW/LA750 -> 0V
CHGR_PHASE1/L7030 -> 12.62V
PPVIN_S0SW_LCDBKLT/L8410 -> .016V
P0V9_LX1_SSD0/L9520 -> .901V
CPUCORE_SW3/L7231 -> 0V

 

[2informaticos]

Check diode mode to ground at L9080/580.