Recent content by Mac Tech

  1. Mac Tech

    820-01598

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

    820-01598

    So can you say the CPU is bad?
  3. Mac Tech

    820-01598

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

    820-01598

    CPU heats up
  5. Mac Tech

    820-01598

    I understand. The voltage is 0.81 V at all times.
  6. Mac Tech

    820-01598

    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.
  7. Mac Tech

    820-01598

    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...
  8. Mac Tech

    820-01521 No image on LCD but image on External Monitor OK

    It seems to be a backlithg issue, what is the voltage in PPVOUT_S0_LCDBKLT?
  9. Mac Tech

    820-00480-A SCREEN ISSUE?

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

    A2337 5V after Liquid damage

    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?
  11. Mac Tech

    820-3476A NO BRAIN

    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.
  12. Mac Tech

    820-3476A NO BRAIN

    U1950 receive SMC_DELAYED_PWRGD?
  13. Mac Tech

    820-3476A NO BRAIN

    what about ALL_SYS_PWRGOD?
  14. Mac Tech

    820-02020 crashes when connecting power

    the fault is generated in both ports?
  15. Mac Tech

    820-3435

    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.
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