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  1. S

    820-00840 no turn on

    SSD_PWR_REQ = 0.4v PMIC_EN_P3V3S5 = 0v PM_EN_PVXS5 = 0v PP3V3_G3H = 3.4v PMIC_PGD and PM_EN_P3V3S4 are also 0v
  2. S

    820-00840 no turn on

    1V25_VREF = 1.25v 3V1_RTC = 3.1v SMC_PM_G2_EN = 3.4v PMIC_SHUTDOWN_L= 3.3v stable
  3. S

    820-00840 no turn on

    PP3V3_LDO3V = 3.3v PP5V_LDO5V = 5.1v BANJO_FBLDO1 = 0v
  4. S

    820-00840 no turn on

    L7670 is now stable 0.6v. U7650 23 = 13.01v 22 = 0v 12 = 0v 13 = 0v 29 = 0v 21 = 0v 4 = 0v smc bypass does nothing
  5. S

    820-00840 no turn on

    C2976 was shorted. The short is now gone and C2976 replaced. Still no PP3V3_S0 and no PP5V_S5. Could not find any other short in secondary lines
  6. S

    820-00840 no turn on

    No history available, PP3V3_S0 is shorted 0.4 ohms to ground. Injecting 3v and 1amp heats nothing. Voltage drops to 0.5v
  7. S

    820-00840 no turn on

    820-00840 with 13v on ppbus. PP5V_S5 starts at 0.4v and then drops to 0v (no pulsing). PP3V3_G3H = 3.4v PP3V3_S4 = 1.1v L7670 is pulsing and L7030 is stable 0.9v
  8. S

    820-02773 boot loop

    820-02773 that boot loops to half loading OS, sometimes not even that. With battery disconnected the loops are seconds long. Tried disconnecting everything. No change. Tried booting in safe mode, it also shuts down on loading boot options. Wont go into DFU mode.
  9. S

    820-02773 no turn on

    I noticed UL000 starts getting warm after about 40sec. I measured diode mode on its main voltage rail but no shorts.
  10. S

    820-02773 no turn on

    Hi, got 820-02773 with tons of liquid damage, it was turning on after cleaning but not anymore. PPDCIN_USBC_AON = 20v PPBUS_AON = 12v PP3V8_AON = 3.8v PP5V_AON = 5v PPVDD_AWAKE_PCPU = pulsing between 0.5 and 0.7v
  11. S

    820-00239 no audio

    it was U6300. Thanks
  12. S

    820-00239 no audio

    U6360 is heating a lot. AUD_3V3_S0 = 3.3v L83_LDO_EN = 2.8v PP1V8_AUDIO = 1.2v PP1V8_AUDIO resistance to ground is 7.7 ohms with U6360 connected and 11 ohms disconnected. I replaced C6361 just in case. Replaced U6360 2 times but still getting hot.
  13. S

    820-01041 5v

    Diode mode U7800 LDOs: PP1V1_SLPS2R = 0.233 PP3V3_G3H_RTC_X = 0.374 PP1V8_SLPS2R = 0.368 LDO_CORE = 0.325 PP0V8_SLPS2R = 0.170 PP3V0_G3H_RTC = 0.388 PP1V2_AWAKE = 0.461 PMU_LDO3_OUT = 0.545 LDO_RTC = 0.325 R7900 was fried, replaced it. PP3V3_G3H_RTC_X is now pulsing to 3.1v instead of...
  14. S

    820-01041 5v

    PP1V1_SLPS2R = 0v PP3V3_G3H_RTC_X =3.3v PP1V8_SLPS2R = 0v LDO_CORE = 0v PP0V8_SLPS2R = 0v PP3V0_G3H_RTC = 0v PP1V2_AWAKE = 0v PMU_LDO3_OUT = 0v LDO_RTC = 0v
  15. S

    820-00850 no touch on touchbar

    L5100 culprit. Thank you
  16. S

    820-00850 no touch on touchbar

    820-00850 no signs of damage, touchbar's touch function just stopped working (display works fine). Tried 2 known working touchbars, no change. PP1V8_DFR is 1.8v. J5100 diode mode (dont have good board to compare but they seem good): TP_DFR_TOUCH_PANEL_DETECT = 0l DFR_TOUCH_LID_OPEN_L = 0l...
  17. S

    820-01041 5v

    PP1V8_SLPS2R = 0v / Diode mode = 0.368 PP1V1_SLPS2R = 0v / Diode mode = 0.230 PP0V8_SLPS2R = 0v / Diode mode = 0.172 PPVDDCPU_AWAKE = 0v PPVDDCPUSRAM_AWAKE = 0v PP1V8_AWAKE = 0v not recognized in DFU mode
  18. S

    820-01041 5v

    Sorry, i made a mistake, one of my probes was displaced and the multimeter was not reading correctly. I do get 1v on the 1v1 ldo lines except on UB300 (the only port that has 20v). Replaced UB300 but no change. Diode mode on PP1V1_UPC_TA_LDO_BMC is still 0.450. No history available. Tested...
  19. S

    820-01041 5v

    I replaced UB090 just in case, but no change. Note: i did test each 1v1 line with its corresponding port connected. All other LDO lines have correct voltage.
  20. S

    820-01041 5v

    i get every voltage except the PP1V1_UPC´s (diode mode is 0.450 on all)
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