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    820-00045 troubleshooting steps

    Ok so I removed F7140 and the short is on the system side (pin 2). However, when I measured voltage with on pin 1 with the fuse removed, i got -.18v -- is this because the SMC can't see PPBUS_G3H?
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    820-3332-A 4sns/1/c000008 ts0p--124

    Run ASD 3S155.
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    820-00045 troubleshooting steps

    pp3v3r3v0_aon, which comes from the ISL, no?
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    820-00045 troubleshooting steps

    Would that explain why PP3V3_G3H is so low? Also, what signals does the ISL look for in order to turn on the LED?
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    820-00045 troubleshooting steps

    PPBUS_G3H is 0v, 0.03v drop to ground. Probably short? Don't have a known good here to compare.
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    820-00045 troubleshooting steps

    PP3V3_G3H is 1.529v. The LED next to the battery connector is dimly lit though.
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    820-00045 troubleshooting steps

    lol....... 12" retina guys
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    820-00045 troubleshooting steps

    Still 5v 10 char
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    820-00045 troubleshooting steps

    F4700 10 char
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    820-00165 MACBOOK AIR A1466 no green light to no power

    What is the exact voltage on PPBUS_G3H?
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    820-00045 troubleshooting steps

    Liquid damaged 820-00045, looks nasty especially around ISL95530 BGA chip. I'm using an original charger with it. The issue is PPDCIN_G3H is only 5v not 14.5v so it's not generating PPBUS_G3H properly I believe. However, it looks like U4780 is the chip that tells the charger to step the voltage...
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    iPhone 6s screen scramble, successful BKLT filter chg

    The 1v8 lcd line is down.
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    A1428 820-3462 Miss bacllight

    yes 10 char
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    [SOLVED]820-3209: Random shutdown

    If that doesn't report anything I fixed one that would shutdown when going to sleep by replacing the trackpad and flex.
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    [SOLVED]SMC firmware/OS conflict, prohibitory sign on boot

    Yea I ended up using rEFIT to flash the SMC firmware I got from here: https://support.apple.com/en-us/HT201518 These are the instructions I used: https://discussions.apple.com/thread/6838010?start=0 Works fine now.
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    [SOLVED]SMC firmware/OS conflict, prohibitory sign on boot

    I replaced the SMC on an 820-3437 and the board works fine, however it won't boot into the customer's OS. I verified that their drive does boot on another machine. I suspect the issue is that the SMC firmware on the SMC I put on is too new for her OS (Mountain Lion) or maybe vise-versa...
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    Having trouble editing SPI ROM

    OK thanks, appreciate the info
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    Having trouble editing SPI ROM

    mid 2014 10 char
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    Having trouble editing SPI ROM

    It has to go back to Apple because the anti glare is coming off, otherwise I wouldn't bother.
  20. A

    Having trouble editing SPI ROM

    25L6406E... Fail. Thanks.
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