Search results

  1. Z

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

    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 --...
  2. Z

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

    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.
  3. Z

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

    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 -->...
  4. Z

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

    We have 12.30vdc on C5250. Previous reading are PPBUS_AON - 12.29vdc 3V8_AON - 3.8 vdc I think all good here. What to check next?
  5. Z

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

    My mistake. Here are the correct readings: PPBUS_AON - 12.29vdc 3V8_AON - 3.8 vdc
  6. Z

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

    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...
  7. Z

    Apple MacBook A2681 / Board 820-02536-A / Stuck at 5v 0.42a

    we did volt injection 2v 0.4a on 3V8_AON. nothing changes on IR camera. what is the power current limit for volt injection on 3V8_AON.?
  8. Z

    Apple MacBook A2681 / Board 820-02536-A / Stuck at 5v 0.42a

    when we plug USB-C power this one chip Q5800 gets hot 40C. and there is short circuit on coil L5800 - P3V8AON_VSW1, PP3V8AON_PH1 0ohm short on ground.
  9. Z

    Apple MacBook A2681 / Board 820-02536-A / Stuck at 5v 0.42a

    The Macbook Pro does not have a water damage or any other visible damage. Everything looks new and good.
  10. Z

    Apple MacBook A2681 / Board 820-02536-A / Stuck at 5v 0.42a

    We have MacBook Pro that has power consume 5v 0.42A. Now we removed board and it still show has power consume 5v 0.42A. Please advise what should we check next? Thank you
  11. Z

    Apple MacBook A2338 / Board 820-02020-A / Stuck at 5v 0.00a /

    We removed UR600 now we have 20v on charging port. do we need to put donor UR600 to turn MAC on?
  12. Z

    Apple MacBook A2338 / Board 820-02020-A / Stuck at 5v 0.00a /

    at 2.4v and 0.07a UR600 gets hot like 25c
  13. Z

    Apple MacBook A2338 / Board 820-02020-A / Stuck at 5v 0.00a /

    I injected 1v on PP3V8_AON there is no power usage,
  14. Z

    Apple MacBook A2338 / Board 820-02020-A / Stuck at 5v 0.00a /

    PP5V=320ohm P5VS2_SW = 340ohm CHGR_PHASE = 0.29mohm PPVIN_LCDBKI = 4.1KOHM
  15. Z

    Apple MacBook A2338 / Board 820-02020-A / Stuck at 5v 0.00a /

    PPBUS_AON circuit has 42ohm to the ground. 3V8_AON 0 = 0.2Mohm
Top