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Whether reballing U8100 and U7700 can help ?.

My multimeter sees a stable voltage on the big coils. I found a short circuit on the line VSS_ANA_MPMU, this is where the U8100 heats up. Does it make sense ?

I checked all: L8120 - diode-mode: 0.01 - pulsing to 0.5v L8121 - diode-mode: 0.01 - pulsing to 0.5v L8271 - diode-mode: 0.150 - pulsing to 0.5v L8270 - diode-mode: 0.150 - pulsing to 0.5v L82B1 - diode-mode: 0.05 - pulsing to 0.5v L82B0 - diode-mode: 0.05 - pulsing to 0.5V L8100 - diode-mode...

PP3V8_AON_VDDMAIN - 3.8v PP1V5_VLDOINT_MPMU - 1.5v PP1V2_S2 - pulsing to 0.8v PP3V3_S2_UPC - pulsing to 2v PP1V8_AON_MPMU - 1.8v You can see that the u8100 corner is heating up.

Right... 3V8_AON is stable - 3.8v PP1V5_VLDOINT_MPMU stable 1.5v PP3V8_AON_VDDMAIN 3.8v stable

Big coils are ok. PP3V8_AON_VDDMAIN 3.8v PP1V5_VLDOINT_MPMU 1.5v PP5V_BSTLQ_MPMU 5v P3V8AON_IMEAS 0.03v P3V3S2_PWR_EN_MPMU pulsing to 1.1v PVDD1_PWR_EN pulsing to 1.1v P3V8AON_LPM 0v PMU_RESET_L pulsing to 0.6v BUCK4_LX0 PP1V06_S2SW_DRAM pulsing to 0.6v PP0V764_S1_SRAM pulsing to 0.6v...

Unfortunately, I don't have the same motherboard. L5800 - 22M oHM L5820 - 7M OHM L5840 - 7M OHM LP800 - 2860K OHM L5230 - 250K OHM LC320 - 170K OHM Should I restore the F5200 before checking the u7700 and u8100 ?

Sorry, my mistake. C5254 has a steady 12.3v.

I replaced the F5200 and still jumps from 8.5v to 12.3v.

Is not stable, jumps from 8.5v to 12.3v. PP3V8_AON_VDDMAIN stable 3.8v

Hello Everyone, One of my customers brought me a macbook air A2337 , probably board number 820-02016 after contact with liquid . He was in another service. When I plugged it in I can see that it stays around 5.090V and amp goes up to between 0.09 and 0.14. And it is on a loop like this. I...

Is there anything else that can be done ?

Is it a bad CPU ? Is it worth rebalancing the CPU ?

L8150 - 0.6v

Tried revive 2x. Seems to complete, there is no error message, a reboot and a lock symbol on the bad device's DFU icon. CPU still no volt. P1V8SSD_SW0 1.8V P0V9SSD_SW0 0.9v PPVCC_NAND_SSD0 2.5v PPVCCQ_ANI_SSD0 1.8v

Unfortunately, I don't have the same motherboard. L7701 - 1.8v P3V3_G3H 3.3v P3V3G3S_EN 1.7v PP3V3_G3S 3.3V PP1V8_G3S - 1.8v P1V05_VCCST_EN - 3.3 v PP1V05_PCH_CPU - 0.98v PP1V05_S0_VCCSTG - 1v VCCST_EN_C 3.3v PP1V05_PCH_CPU - 1v VCCST_OVERRIDE_3V3 - 3.3 PP1V1_S0SW_CPU_VCCPLL_OC 1v...

Hi. MacBook looks perfect, no water, no drop, nothing bad on motherboard. I've tried DFU, no luck (Dfu starts up but doesn't help). Processor heats up. L9060 - 2.5v L7670 - 5.1v L7690 - 3.3v L7030 - 12.6v L7400 - 1.8v L7230 - 0v, 0.3 ohm L7220 - 0v, 0.3 ohm L7210 - 0v, 0.3 ohm L8100 - 1.1v...

Repaired. Corrosion on R5503. I rebuilt the connection with wire .

hi this motherboard was in contact with liquid. Everything cleaned and it works. The only problem is an error in AST 2. Voltage sensor - operating range test. I replaced the board/flex and still the same. Is this a big problem ? I turned on iStatistica - PBus Rail 0v