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  1. K

    820-00165 has no s0 voltages

    pm_slp_s4_l is 3v. pm_slp_s0_l is 0v. pch_pm_slp_s0_l is 3v . u8180 is 3v on all pins except pm_slp_s3_buf_l and GND
  2. K

    pp1v8_slps2r is missing on 820-01958

    replaced q7680 and it boots fine now
  3. K

    pp1v8_slps2r is missing on 820-01958

    pp3v3_g3h is fluctuating quickly from 2.5v to 3.1v. could that be why pp1v8_slps2r isn't there?
  4. K

    pp1v8_slps2r is missing on 820-01958

    It had a dead short to ground at c7804 which is pp3v3_g3h_pmu_vddmain. I injected 3 volts to find it. now pp1v8_slps2r is 0v. do i need to replace to capacitor or no?
  5. K

    820-00165 not starting with charger alone

    the magsafe charger was the issue
  6. K

    820-00165 not starting with charger alone

    this board had a liquid spill and now it will not start with the charger alone although the magsafe charger has an amber indicator . it only starts with the battery but it appears to charge
  7. K

    820-01958 stuck in dfu mode at 5v

    i tried plugging in a charger in one port while doing a restore with the dfu port and apple came up on the display. apparently that 5 volts from the usb port of the other machine wasn't enough. Now it's up and running again
  8. K

    820-01958 stuck in dfu mode at 5v

    not without error dfu to dfu. it basically stays in dfu mode. i never have to put it in dfu mode
  9. K

    820-01958 stuck in dfu mode at 5v

    yes. the 20v shows up on both ports with no battery attached
  10. K

    820-01958 stuck in dfu mode at 5v

    i'm getting 20v after programming u3060 with an original file. the ppbus is still 12.3v and the device stays in dfu even after running the configurator. upc_i2c_int_l is still 0v even though ppdcin is 20v.
  11. K

    820-01958 stuck in dfu mode at 5v

    resistor r3441 isn't on the board and i'm not sure if it is supposed to be. is it?
  12. K

    820-01958 stuck in dfu mode at 5v

    replaced u3100 and u3200 today and it is still stuck in dfu mode and upc_i2c_int_l is 0v. still waiting on the programmer for u3060
  13. K

    820-01958 stuck in dfu mode at 5v

    i see a lot of files for the u3060 being posted in forums. I'm assuming that could be the problem
  14. K

    820-01958 stuck in dfu mode at 5v

    UPC_I2C_INT_L stays at 0v
  15. K

    820-01958 stuck in dfu mode at 5v

    writing the Soc ROM didn't change anything. I noticed that ppdcin is 19v only when a charged battery is attached to the board. Otherwise the amp meter sits at 5v 0.000a and it is stuck in dfu
  16. K

    820-01958 stuck in dfu mode at 5v

    i tried a revive it with the configurator and it gets stuck at step 4 of 4 installing system. force quitting the configurator is the only option. the board remains in dfu mode afterwards.
  17. K

    can't find a temp sensor on 820-2915

    it says that it can't read it
  18. K

    can't find a temp sensor on 820-2915

    this board has a TM0P sensor error. it's the sensor for the dc-in proximity airflow. i'm not sure which one that it is
  19. K

    how to troubleshoot memory chips

    .257
  20. K

    how to troubleshoot memory chips

    i replaced all the memory chips. it doesn't crash anymore
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