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    A1398 - Firmware Problems

    Hello- I posted similar on ghostlyhaks yesterday but I'm not sure if the site is no longer as active or where people went, so I thought I'd ask here too. I have an A1398 that indicates "Unavailable" as its Serial Number within About this Mac. Everything seems to work fine on the computer...
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    820-3209-A Sleep & EDID & USB Port

    Hello, I have a 2012 MacBook Air A1466, motherboard 820-3209-A that randomly puts itself to sleep. You can be actively working on something or not touching the computer at all, and the display will turn off and fan spins down. Ran ASD and it put itself to sleep during ASD when running the...
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    820-2936-B Powers Off

    Hello, Working with an 820-2936-B from a 2011 A1278 that we inherited after Best Buy could not fix. The computer has a broken screen but the LCD itself looks fine. It powers on and boot chimes but powers itself down, sometimes partway through boot, sometimes during an Internet recovery. It's...
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    820-00165 - Short Hunting - No Display

    Hello, Working with an 820-00165 that has green light/orange light, fan spin, and boot chime but no display. Connecting to an external monitor works and the blinking folder shows up on the external monitor. F7700 has 8.57V on both sides but PPVIN_S0_SW_LCDBKLT at pin 1 of L7701 is 0V...
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    820-2330-A Green light, no fan

    Hello, Working on an 820-2330-A that was easily the dirtiest computer that I've ever worked on. Airflow from one fan was completely blocked. The computer was brought to me as "no power". Magsafe 85W goes green, so one-wire seems ok but no fan spin. After extensive cleaning with no apparent...
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    820-00165 Short Troubleshooting

    Hello, Seems like 820-00165 day on the forum. I'm working with an 820-00165 board that had a blown F7140. Fixed that but still no power or fan spin and found there to be a short on C7313. Replaced C7313 and now I get fan spin, high speed, but no green light on charger. It also seems like...
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    820-2936-B Multiple Issues?

    Hello, We're working with an 820-2936-B from an early 2011 13" A1278 and the board is behaving inconsistently but never correctly. On boot, the computer will sometimes appear to start correctly, only to kernel panic and reboot before going into a boot loop. Late this afternoon we were able to...
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    820-2530 - Green Light, No Fan Spin

    Hello, I'm troubleshooting an 820-2530 that consistently shows green light on charger but does not spin the fan. I'm not quite sure what to test next and I'm hoping for some help. I have 16.98v on pin 2 of U7000 and PPBUS_G3H appears to be present, though that may be obvious because of the...
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