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yes of course, I restored but I had to disconnect the power of the cpu. Because connected it gave me error 9

So can you say the CPU is bad?

machine 820-00850 that had almost the same problem, I solved it with apple configuration 2. Restore.

CPU heats up

I understand. The voltage is 0.81 V at all times.

when removing U7711 the DDR voltage appears 1V. Check another board 820-01987-a and that voltage "signal" CPU_ZVM_L does not appear at any time. Change U7711 without positive results. I have a 820-00850 with the same problem.

Hi everyone. I have this plaque, liquid drop. Coffee. The machine has 20V and consumption of 500ma. I have ALL_SYS_PWRGD I have CPU voltages I am missing PPVCCEDRAM_S0_CPU. This voltage comes out of U7710, the activation PVCCEDRAMS0_EN_FILT_BUF I'm missing, it comes from U7712. U7712 would...

It seems to be a backlithg issue, what is the voltage in PPVOUT_S0_LCDBKLT?

that's a screen flex problem. I have repaired some LCDs

U5700 generates PP3V8_AON_VDDMAIN reaches L8300 (MPMU_BSTLQ_LX) feeding U8100 (MasterPMU) also generates PP5V_BSTLQ_VOUT_MPMU, U8100 generates PP3V3_S2_UPC, PP1V25_S2 are responsible for power the CD3217B12, have I already checked the LDOs of each type-c controller?

here may be the problem, this signal is generated by U5000 SMC. But some transistor may be blocking the signal. If I already change u1950.

U1950 receive SMC_DELAYED_PWRGD?

what about ALL_SYS_PWRGOD?

the fault is generated in both ports?

Yes, when removing U1950 the ALL_SYS_PWRGD voltage is 3.3 normal. What would change by removing Q8150? I replaced U1950 and it's working normal, I'll have it tested.

Hi everyone. I have seen this fault before in models 820-00165. The problem is the following, I don't have ALL_SYS_PWRGD, when removing u1950 the machine turns on but obviously not completely because PM_PCH_SYS_PWROK is missing. My question is, how do I attack this bug? Would I have to change...

put the bios originally. Voltages on i2c is 3.38v Diode mode is 444 on both

Before finding the fault here, I had changed the Bios for another of the same model only from a different manufacturer. Could this have affected something? Should I reprogram new Bios with your serial number?