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  1. S

    820-01958 A2179 dead only Fan Spin from time to time

    It "drops" to 12.69V shortly before the Error appears. But I don't think this has to be the Error right ?
  2. S

    820-01958 A2179 dead only Fan Spin from time to time

    PPBUS_G3H is stable at 12.89V Fan did not spin since DFU and Recovery mode.
  3. S

    820-01958 A2179 dead only Fan Spin from time to time

    Tried to boot in DFU mode and tried to Restore as well as Repair - only got an Error saying that the Device was either disconected or connected twice. Edit: Now tried Recovery Mode - Error 4010 but the Error Text is the same.
  4. S

    820-01958 A2179 dead only Fan Spin from time to time

    As i am relatively new to this Forum i want to kindly ask you if you can tell me where to start looking for a fault on this Board..
  5. S

    820-01958 A2179 dead only Fan Spin from time to time

    Just for you guys.
  6. S

    820-01958 A2179 dead only Fan Spin from time to time

    As i mentioned above - the only Problem is i aint got a Schematic or Board View. Could you please help me out where to chekc or to measure. Thanks in advance !
  7. S

    A1534 "DeadCPUBook" 820-00045A Board doesnt turn on

    Okay I will order such an USB Hub and inform you further :) But if the Board Doesn't boot - what could cause such a Problem ?
  8. S

    A1534 "DeadCPUBook" 820-00045A Board doesnt turn on

    Okay but this doesn't solve the problem, that the Screen still stays black right ?
  9. S

    A1534 "DeadCPUBook" 820-00045A Board doesnt turn on

    The battery is not charged.. Is there a possible way to charge it outside the Mac ? Like externally ? I think the battery is dead maybe ?
  10. S

    A1534 "DeadCPUBook" 820-00045A Board doesnt turn on

    How should i do this if there is only one USB Port ?
  11. S

    A1534 "DeadCPUBook" 820-00045A Board doesnt turn on

    PP5V_S0 = 4.99V PP3V3_S0 = 3.29V PP1V5_S0 = 1.516V PP1V05_S0 = 1.054V PP3V3_S0SW_SSD = 3.29V PPVCC_S0_CPU = 1.706V
  12. S

    A1534 "DeadCPUBook" 820-00045A Board doesnt turn on

    PP1V8_S3 = 1.8V PP1V2_S3 = 1.202V
  13. S

    A1534 "DeadCPUBook" 820-00045A Board doesnt turn on

    Okay - changed U8000 now - 3V3_S4 is stable now but still no power on..
  14. S

    A1534 "DeadCPUBook" 820-00045A Board doesnt turn on

    thanks !!!
  15. S

    A1534 "DeadCPUBook" 820-00045A Board doesnt turn on

    Shoudnt PPVIN_G3H_P3V3G3H be 3.3V
  16. S

    A1534 "DeadCPUBook" 820-00045A Board doesnt turn on

    As you said - i will change U8000 - ordered my Donor Board today as my last one is almost empty :D BTW: PPVIN_G3H_P3V3G3H changed to 20.5V is this normal ?
  17. S

    A1534 "DeadCPUBook" 820-00045A Board doesnt turn on

    PP5V_S0 - 4.98V PP3V3_S0 -3.30V PP1V8_S3 - 1.806V PP1V5_S0 - 1.517V PP1V05_S0 - 1.056V PPVCC_S0_CPU - 1.709V PP3V3_S4 to Ground 0.32V Ohms Mode on C7830 to ground is 44.8kOhm
  18. S

    A1534 "DeadCPUBook" 820-00045A Board doesnt turn on

    PP3V3_S4 is 2.06V not pulsing anymore.
  19. S

    A1534 "DeadCPUBook" 820-00045A Board doesnt turn on

    Thanks in advance ! Appreciate your help man ?
  20. S

    A1534 "DeadCPUBook" 820-00045A Board doesnt turn on

    Well.. this is the case.. World be almost impossible if S0 is there and S5 isnt right ? So why do you think U8000 is the problem ?
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