Recent content by it-solve

  1. it-solve

    SOLVED: 820-01700 - 20V 0.17A after liquid damage. Short on PP*_SLPDDR & Heat signature on T2

    Thank @2informaticos this resolved it. Not sure how liquid damage is related to DFu corruption. :/ The minute I start pushing into DFU mode and the meter connected to the top left port, it starts pulling above 2A and charging the battery. Fallowed this -...
  2. it-solve

    SOLVED: 820-01700 - 20V 0.17A after liquid damage. Short on PP*_SLPDDR & Heat signature on T2

    SLPS2R - 0.8, 1.1, 1.8present PPVDDCPU_AWAKE - 0.5V - is it low? PPVDDCPUSRAM_AWAKE - 0.8V AWAKE -1.2, 1.8, 3.3 PPBUS_G3H_SSD0_SNS - 12V PP2V5_NAND_SSD0 - 2.5V PP3V3_G3H_SSD0_SNS - 3.3v
  3. it-solve

    SOLVED: 820-01700 - 20V 0.17A after liquid damage. Short on PP*_SLPDDR & Heat signature on T2

    L9520 - 388 L9580 - 410 L7811/12 - 063 - Probably okay?
  4. it-solve

    SOLVED: 820-01700 - 20V 0.17A after liquid damage. Short on PP*_SLPDDR & Heat signature on T2

    Hi Guys, this A2141 820-01700 came with liquid damage on 2 spots only: C6466/6452 - PPBUS_G3H_SPKRPAML - 12.6V - 0.39 C9580 - PPBUS_g3H_SSD0_SNS - 12.6V - 0.39 The only short I located apart from than CPU Phase lines is on PP0V9_SLPDDR - 0.049 PP0V82_SLPDDR - 0.032 PPVDCPU_AWAKE - 0.010 There...
  5. it-solve

    820-00281-A Critical Software Update failed to install

    Managed to measure these, but cant the rest, impossible without ripping the trackpad cables. This board also doesnt turn on without a battery. J4401 Diode mode reading between two boards are identical on J4401
  6. it-solve

    820-00281-A Critical Software Update failed to install

    @tcampbell34 Have you come across a crashed software update issue? It must have overheated and cold jointed then. Thanks for this I will try.
  7. it-solve

    820-00281-A Critical Software Update failed to install

    Got a spare A1707, placed this board into spare casing and same error message. Placed working A1707 in this one's case and touchbar and everything else is working. Any areas I should cross-compare measurements of while I have them both here? u3900 is shielded but will take measurements of the...
  8. it-solve

    820-00281-A Critical Software Update failed to install

    dont have spare A1770 for test, but have spare palmrest with functioning touchbar, as well as brand new touchbars
  9. it-solve

    820-00281-A Critical Software Update failed to install

    PMU_TO_SOC_RESET_L Goes 1.79V when it turns on Tried another touchbar, stuck at the same message, however no light on the brand new and used touchbar with a case. Suspecting something touchbar related on the board? Resistors seems fine. Slight oxidation around underfilled SSD chips shield and...
  10. it-solve

    820-00281-A Critical Software Update failed to install

    Passes all Apple diagnostic tests. Geniuses said its a faulty TouchBar Tried most of these - https://repair.wiki/w/A1706_2016-2017_13”_Touchbar_MacBook_Pro Disconnected the Touchbar as it was showing only yellowish background Wiped the drive and reinstalled High Sierra - It installed properly...
  11. it-solve

    820-00165 no PM_SLP_S5_L pulls 0.06A

    Preheated it with a hot air gun, no luck - same heat spot. I can try to reflow like a GPU but seems internal short.
  12. it-solve

    820-00165 no PM_SLP_S5_L pulls 0.06A

    I assume this is what a dead CPU core looks like?
  13. it-solve

    820-00165 no PM_SLP_S5_L pulls 0.06A

    Short on PPVRTC_G3H, removed caps in the line including U1900, still short. Seems to be coming from the CPU. Dead CPU? Can I inject 2.5V to confirm?
  14. it-solve

    820-00165 no PM_SLP_S5_L pulls 0.06A

    PPVRTC_G3H - 0.11V at the output pin1 PP3V42_g3H - 3.4V PP3v3S5 - 3.3V PP3v3_TBTLC - 0.1V PP3V3_S5RS3RS0_SYSCLKGEN - 3.3V
  15. it-solve

    820-00165 no PM_SLP_S5_L pulls 0.06A

    This board is a return case with liquid damage from 2 years ago. Not sure if related. Stoped turning on, Seems like a screw got loose and got stuck between the GND of C7323 and the fan connector, Probably not related as well. Cant measure any direct shorts anywhere. All voltages until...
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