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Apple Macbook Pro A2442 / Board # 820-02098-A / Milk Spilled

Z

zeydullak

Member
Hi Guys,

We have a A2442 Macbook Pro that has milk damage on it. We removed the board, washed it and cleaned it using DI water, took pictures before washing process no to forget corroded locations. The board stays at 5V 0.11amps. There is a definitely a short on the PCB, maybe multiple of them. I need advise on how to proceed and identify the issues. Please advise what to check. Thank you.

regards,
Zack
 
Z

zeydullak

Member
See other element measurements:
LF800 --> 0.985 mvdc
LN420/421/430 missing voltage
LN480/LC260 missing voltage
L5840 --> 3.8 VDC
L5820 --> 3.8 VDC
L5800 --> 3.8 VDC
L9420 --> missing voltage
C9211:1 --> 12.30 VDC
LP800 --> 40 mVDC
L9420/L9500 --> missing voltage
L5230 --> 1.2VDC
CR854:1 --> 12.30 VDC
CR805 --> 12.30 VDC
C5894:1 --> 3.8 VDC
C9220 --> 12.30 VDC
C5207 --> 5.2 VDC
C9205:1 --> missing voltage
CP802/803 --> 12 VDC
 
Z

zeydullak

Member
U7700
PP1V2_S2 --> missing power
PP3V3_S2 --> missing power
PP1V8_S2 --> missing power
PP5V_S2_MAIN --> missing
PP3V3_AON --> this power line is fluctuating on Siglent Multimeter. So it shows 3.3 goes to 2.6 and goes to zero and loops.
 
Z

zeydullak

Member
See other element measurements:
U8100

VIN_LDOS:
PP3V8_AON_MPMU_ISNS --> 3.8 VDC

VLDOS:
PP3V3_S2 - missing power
PP1V8_S2SW_CLVR_VDDC1_LDO - missing power
PP3V3_AON - this power line is fluctuating on Siglent Multimeter. So it shows 3.3 goes to 2.6 and loops
PP1V8_AON -- 1.8 VDC
PP1V2_AON -- 1.2 VDC
 
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