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  1. J

    820 00045, can't read pen's, don't work mouse, etc

    Does the machine power on? Probably going to have a dead CPU anyways tho...
  2. J

    820-3437 chimes, bklt comes on no video

    Also, see if it boots to a ? folder with the SSD unplugged
  3. J

    820-000875 No power

    If PP3v3_G3H is present, likely either one of the CD3215s are fried or both, OR there is an issue with the chargeport itself. Take diode mode readings on all the LDO lines (3v3, 1v8 etc) by each CD3215 and compare
  4. J

    820-3023 no water damage. light on MG. Fan spin. No chime. No image.

    If it's beeping, this is trash. Dead CPU, dead PCH, dead RAM, broken internal trace etc. Waste of time.
  5. J

    820-3332 - Shuts down after going into sleep mode and won't power up

    Resoldered U8900?
  6. J

    820-00928 (only shows battery low on screen) need schematics

    If you aren't using an OEM 87 Watt USBC, it won't charge.
  7. J

    MBA 11? - 3435 - WD. No fan spin. Orange MG without Battery. Green with the battery.

    Wouldn't be surprised if U7600 damaged the CPU.
  8. J

    820-00244 Not powering on

    Trash dead CPU
  9. J

    820-00165 power cycling.

    Sounds like one of the BIOS traces is corroded/broken. Sounds like you already found the one
  10. J

    820-00165 SMC issue

    SMC_RESET_L? JTAG Removed?
  11. J

    820-00281 question, short on c3105

    Yeah have to replace the chip with another all 4 must be installed. Has to be same firmware
  12. J

    820-00165a no green light

    What is your exact voltage on PPBUS?
  13. J

    820-3332 - ppbus_g3h low

    12.13 is too low regardless. SMC_RESET_L voltage? If 3.3, then likely bad ISL6259 or bad SMC. If low, figure out why.
  14. J

    820-00244 Not powering on

    5 or 20 volts on DC-in? I will warn you all 12" MacBooks end in dead CPU at some point, so beware.
  15. J

    820-4924 No Backlight PPVOUT_S0_LCDBKLT - 48V

    Nope have to have the correct screen for these no workaround
  16. J

    820-00840-A Not Turning On

    PPDCIN is 5 volts so forget any voltage from PPBUS on for the moment. DCIN must be 20 volts. Post voltage for PP3v3_G3H
  17. J

    820-3332 - ppbus_g3h low

    And inspect for corrosion near the SMC
  18. J

    820-00045 Only turn on when plugged in.

    Yeah please make your post more clear on what is wrong. Also, I will warn you these always end in dead CPU at some point, so be aware of that.
  19. J

    820-4924

    Freeze spray might help detect heat. In such case, check for shorts on PPVRTC_G3H, and PP3v3_SUS as well. If all shorted, trash this. If no, then inspect for short near the SMC it could be pulling 3v42 down
  20. J

    00165 MagSafe light fades away

    3v42 166 ohms= partial short
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