Recent content by macRepairAmb

  1. M

    820-00928: No power

    Yep that fixed it, Thanks
  2. M

    820-00928: No power

    Have this board, appears have gotten slight liquid spill on J4402 and around the components close to it, as far as D3370. I'm not reading any shorts on any of those components. I do get a short on PP3V3_PMICLDO, about 9ohms. U7800 is clearly blown with a hole on the top of the chip. My...
  3. M

    820-01958: PP5V_g3S Unstable/Pulsing

    yes 1V8/3V3_G3S both pulse
  4. M

    820-00239: No powering up

    L7210 - 1.12 after 15sec. Stays at this and doesn't change
  5. M

    820-00239: No powering up

    Sorry, I should I’ve also included that theowner had just messaged me that the original issue he had was no image on display. When I got it, it was completely dead until after the repair of the corrosion damage. Regarding usb2 and 3 testing, other than finding a usb 2.0 and 3.0 device to test...
  6. M

    820-00239: No powering up

    Diode mode LCD disconnected. EDP_INT_AUX_N - .285 EDP_INT_AUX_P - .289 EDP_INT_ML_N<0> - .289 EDP_INT_ML_P<0> - .29 EDP_INT_ML_N<1> - .29 EDP_INT_ML_P<1> - .29 EDP_INT_ML_N<2> - .28 EDP_INT_ML_P<2> - .29 EDP_INT_ML_N<3> - .28 EDP_INT_ML_P<3> - .28 checking with a 15" model, (820-00281) those...
  7. M

    820-01958: PP5V_g3S Unstable/Pulsing

    diode mode reading of big coils L7670 - 0.43 L7690 - 0.39 L7030 - 0.48 L7400 - 0.2 L7230 - 0.06 L7220 - 0.06 L7210 - 0.06 L8410 - 0.86 L8100 - -0.08 L9060 - 0.41 L6520 - 0.43
  8. M

    820-01958: PP5V_g3S Unstable/Pulsing

    PPBUS_G3H_SSD0 - 12.3 PVCCNAND_EN - 0.0
  9. M

    820-01958: PP5V_g3S Unstable/Pulsing

    what page is the ssd power rail for this model
  10. M

    820-01598: No power

    Don't think this can be repaired. i remembered during initial inspection, i saw a little liquid spill on J8500. So started checking the pins and EDP_AUXCH_N pin 2 resistance measurement come out at 2.6ohms. Pin 3 reads 58ohms.
  11. M

    820-01958: PP5V_g3S Unstable/Pulsing

    PPVCC_NAND_SSD0 - 0.0 The board does look like it had been cleaned in the past but i can't find any corroded components. Yes, i did try DFU and it failed with an error.
  12. M

    820-01958: PP5V_g3S Unstable/Pulsing

    Have yet another board with no power. 20V present but no current draw. Notice PP5V_G3S is unstable and pulsing. PM_SLP_S4_L - 0.0 PP5V_S5_LDO - 5.03 PPVIN_G3H_P3V3G3H - 12.3 and stable PPVIN_G3H_P5VG3S - 12.3 and stable PP3V3_G3H - 3.3 and stable P5VG3S_EN_DLY - pulses also Any suggestions...
  13. M

    820-01521: No power

    Have another board . Found and isolated a short to U7800. Once U7800 is removed, the short is gone. Short is on PP3V3_G3H_PMU_VDDMAIN My question is can i replace this chip with one from a seller from china or does this have firmware or files specific to the board model, which would mean i...
  14. M

    820-01598: No power

    Have this board that doesn't power on. I get 20v but no amp draw. Couple readings PPBUS_G3H = 12.6V PP3v3_G3H = 3.3V PP1V8_SLPS2R = 1.8V PP1V8_AWAKE = 1.8V PP1V1_SLPS2R = 1.1V PP0V8_SLPS2R = 0.8V PP3V3_AWAKE = 3.3V PP1V2_AWAKE = 1.2V PMU_PVDDMAIN_EN = 3.3V P3V3MAIN_PGOOD = 3.26V PP3V_G3H_RTC =...
  15. M

    820-00239: No powering up

    Yes, 5v on L3500 ans LB700 with usb drive connected to each ports
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