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  1. C

    820-00239 20V Stuck at 0.14a

    System is not powering on. a battery replacement was done about a month ago. With the board alone on the bench the voltages are as follows PPBUS_G3H - 13.07V PP3V3_G3H 3.4v PP3V3_S5 - 3.34V PP3V0_G3H 3.08V PP5V_S5 - 5.12V PP5V_S4 - 5.12V PP5V_S0 - 5.13V L7210 Has 0V so CPUCore is missing...
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    820-00850-A 20V Boost. No Power On

    I was able to get the machine booting again at least for now. However, with the board alone on the bench I was getting 20V. Now I'm stuck at 5V @ 0.4a. Additionally with the new battery connected I'm stuck at 5V @ 0.4-0.6a also but the machine is booting into the OS off the batteries charge...
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    820-00850-A 20V Boost. No Power On

    I did not try with an external switch. I will reply after trying this
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    820-00850-A 20V Boost. No Power On

    It does not get recognized that it is in DFU
  5. C

    820-00850-A 20V Boost. No Power On

    History: Machine sustained severe liquid damage from a pet peeing on the machine. After opening it up, numerous signs of corrosion were noticed. The board was put through an ultrasonic cleaner and then checked again with just the board on the bench. No obvious shorts on the board PPBUS_G3H -...
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    Macbook A1707 820-00928 Random Shut Down Post Repair

    Attached are below is the Diag Report log file [APPLYING PREDICATE (NOT lastPathComponent BEGINSWITH "stacks-") AND (lastPathComponent ENDSWITH "crash" OR lastPathComponent ENDSWITH "ips" OR lastPathComponent ENDSWITH "spin" OR lastPathComponent ENDSWITH "gpuRestart" OR lastPathComponent...
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    Macbook A1707 820-00928 Random Shut Down Post Repair

    Okay I will post one as soon as I can
  8. C

    Macbook A1707 820-00928 Random Shut Down Post Repair

    History: The computer will not power on. Not charging. The USB-C ports pull 5V but do not go up to 20v like they should. After looking at the board it was determined U2800 was dead. The thunderbolt IC was replaced from donor and the system is functioning as intended. System boosts to 20V on...
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    820-00923 20V Boost, 0.55a draw. No display

    That's what I had settled on. I truly appreciate the help here.
  10. C

    820-00923 20V Boost, 0.55a draw. No display

    Ive only been doing testing with the board alone in the desk. I tested with and without a screen after BIOS update and no change.
  11. C

    820-00923 20V Boost, 0.55a draw. No display

    Sorry. Will do so from now on, most forums I've been on I just assume to use the reply button but I definitely understand. I attempted the clean BIOS and Clean ME with no change for the device.
  12. C

    820-00923 20V Boost, 0.55a draw. No display

    Measuring at L7210 CPU core reads 1.05V and does not drop down at all. After roughly 30-45 seconds, maybe a minute, the amp draw drops from 0.5-0.6a down to 0.010a. There is no USB activity. Flash drive light does not turn on at all. As for history I don't think there's much of any. System was...
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    Anyone have opinions on the tool S-UEM2 USBC & EDP Meter

    My shop picked up this tool and I'm curious if anyone has used it or finds it to be useful even.
    • CGid
    • Thread
    • Replies: 0
    • Forum: Tools
  14. C

    820-00923 20V Boost, 0.55a draw. No display

    Have an A1706 Logic board. 820-00923-A. When plugged in system boosts to 20V drawing around 0.55a. CPU gets hot. If left on long enough/allowed to get hot enough the fans do start spinning. No display via the screen nor via an External monitor. Using the tool U-SEM2, I find Pins 6,10, 31, 33...
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