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    Anybody tried combing through BIOS dump to see if TouchID (2016/2017) can be re-programmed?

    Just curious if anyone has messed around with combing through BIOS dumps to find any info that might be related to the pairing of the TouchID Buttons. Alternatively, has anyone maybe tried swapping dumps/ME regions between boards to see if the other TouchID would work? Is the TouchID programming...
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    820-00165 HDA_SDOUT/_R Shorted; CPU?

    Working on an 820-00165 2017 that I believe has a CPU fault causing no audio. Checked all the common issues for no audio, but found HDA_SDOUT shorted (.000) at J9500. Since this comes from the CPU, I suspect a CPU fault and nowhere else to go. Removed R1313 and found HDA_SDOUT_R shorted to...
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    820-00840, No Camera, ALS SMBUS fault. SMC?

    Working on an 820-00840 board that had no camera. Tested it in several assemblies as I know the cameras in these panels love to fail. All power lines measured fine around U3900, but I had seen someone about a year back mention the ALS SMBUS sensor causing issues with the camera SMBUS line, so I...
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    Is there a fool-proof way to check for DEP in MacOS?

    I know that installing MacOS "SHOULD" initiate a mid-setup prompt that a board is enrolled in DEP, and if it doesn't, it will "usually" pop up in MacOS post-install in the top-right corner of the screen. However, I've had some boards recently that show no notifications of DEP, and a few days...
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    Are A1989/A1990 TouchID buttons re-pairable?

    This isn't as easy to Google as expected; but I feel like I recall a customer mentioning the 2018+ Touchbar TouchID buttons (not Airs) are programmable or re-pairable. I feel like a customer mentioned that Apple told them their TouchID button wasn't re-pairable, "because it's not a 2018 or 2019...
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    T2 firmware update process?

    I've seen it referenced a few times on here that the T2 units can suffer from corrupted/damaged T2 firmware, which can be updated via DFU mode using a process. I did see where it was mentioned to "search the forum for recent topics...", but didn't find anything useful when doing so. It also...
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    820-00138 Powers and boots, but no green light.

    Got one that has me stumped; first one in a while of this type! 1. 820-00138, no liquid, no damage from aftermarket charger or anything at all. Board powers on and boots, but has no green light. 2. Confirmed SMC_BC_ACOK, SYS_ONEWIRE, 3v42, etc, are all present across board and near SMC. 3...
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    820-00923 Takes a looooong time to wake from sleep?

    I have an 820-00923 with a few different symptoms that I believe "might" be caused by a bad SMC. Basically, it either won't wake from sleep, or takes a very, very long time. Additionally, the power button TouchID and SMC reset functions work, but the button will not turn the board/unit on or...
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    Tons of untouched/clean boards for sale!

    We have too many boards! We have inventory that's dying on the vine because we simply don't have the time or manpower to repair them all. In addition, we're also rolling over stock and clearing out some older model boards. Before we slaved away to get them all listed on eBay or sold to our...
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    Program or pair new TouchID power button, 2016/17 A1706/7?

    Has there been any news/progress or solutions to pairing a new TouchID power button with a 2016/2017 A1706 or A1707 board? Have had three occasions now where it would be helpful to do. Any recommended methods for repairing a torn Cable? Traces are incredibly small and tightly packed; seems...
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    Question about Medusa2 and "no chip found", etc.

    Just picked up a Medusa 2, and I must say I'm a bit disappointed with the limited testing I've done. The first ~10 boards (parts boards, albeit, but all with SPI present and no damage or missing components or anything to that area of the board) or so that I tried to simply read the serial/BIOS...
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    What does it indicate when a USB-C model pulls 20V but 0 amps/watts?

    Have seen two Touchbar boards in the past few weeks, each with the same symptoms: Zero damage to the board, 20v on USB-C input, but 0a and 0w being drawn. Have not seen this prior to these 2 units, but now both are showing this symptom. Have confirmed it's not a charger issue (other boards work...
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    820-00239 Missing SMC_PM_G2_EN.

    Clean 00239, no liquid, with no power. Board has ppbus (13.2v) and 20v on USB-C power input (0W/0A draw), but not much else. SMC_PM_G2_EN is missing completely. Thought it might be the SMC since signal was missing completely, but replaced SMC and symptoms persist. Also replaced U7650 to be safe...
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    820-00923 One USB-C Connector only works "one way"

    Working on a liquid-damaged 00923. Board had a spill to the right-hand-side, took out one CD3215 and the USB-C assembly on that side. Replaced the controller and USB-C assembly and the board/unit is working well, with the exception of one thing: one port on the LEFT side of unit (opposite of...
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    Any source for 2018 MacBook Air I/O board?

    I'm in need of a few of the small I/O boards for the new 2018 Air models. Can't find a part number (don't have any available to check), and can't find any on the typical venues. If anyone could even just provide the part number (820/821-XXXXX), that would be helpful as well! Very much...
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    What is this cable from the LCD Assembly? 2018 Air.

    Working on a 2018 Air Retina with liquid-damage. Was able to miraculously repair the board without schematics by matching circuits, etc., but ran into one issue I won't be able to resolve. One of the smaller cables/connectors coming from the LCD assembly has been burned beyond repair. The pins...
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    Serial number shows on AHT Screen?

    Was running AHT on a 2015 board today, and noticed something I'd never seen before; the unit's serial number was shown permanently (the entire time after booting to option+D) in the bottom-left hand of the screen, along with a barcode. I've never seen this before and hope I'm not crazy, but just...
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    820-00923, Cycling 5.14v on 3 ports, Liquid.

    Working on a board that had liquid to some areas I'm not thrilled about, but it is what it is! Obvious liquid to U7800, U7900, U4200 and U3100 (awesome, great, very excited). Board running on 5.14v that cycles every ~8 seconds or so, EXCEPT if I connect charger to the bottom right-side port, in...
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    Anyone have a good source for D71B LP8550 Chips?

    I'm having a hard time finding an affordable/reliable vendor for the LP8550 with the "dot" (D71B?) instead of the "diamond" (D68B?) logo for pin 1, which I assume has programming (compared to the diamond-logo/D68B chip). I bought 100 a year or so ago, and have just run out. All I have left are...
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    820-00281, No Boot, Fans Spin.

    Have an 820-00281 that's actually powering on (fan spins), but then it cuts off soon after. CPU isn't getting very warm (oh no), and ppbus_g3h is at 12.67v, but should be closer to 13.1v I believe. I'd normally suspect a CPU or BIOS issue with these symptoms, but aren't so sure on newer models...
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