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    Macbook Pro A2338 LCD replacement

    Hi, I have been asked to replace a broken LCD on this Macbook. I did several screen replacement on older Macbooks, but never on one from 2020. My question: on these models, are the screens "paired", and there is a need to update a software after the replacement, or is it enough to unscrew and...
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    820-3488 clicking but pointer not moving

    Hi, I have few trackpads from Macbook Air 2013-2017, some clicking but no pointer moving, other without reaction. They are not apparently water-damaged. Is there any way to repair them? Any board view available? Or better to forget about repairing them?
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    820-3476 no keyboard, SSD not detected

    Hi, This board chime and I see the blinking folder. Internal SSD is not detected, I tried 2 different, with Big Sur and Yosemite. External SSD is not detected either, tried with 2 different I am unable to do a PRAM reset, neither from internal keyboard or external keyboard, even with internal...
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    820-3437 ASD test failed: Tcon error

    Hi, On this board I replaced the LCD connector and the LCD (from China). Apple test (D key) says no problem; ASD EFI 3S156 is fully passed; ASD OS 3S156 shows the attached error. ALS, camera, work fine. What can provoke this issue? I checked again the LCD connector, all pins look good
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    820-3476 no display on mini display port

    Hi, This board had few small spots of water damage, I repaired them, and now I have chime, orange light on charger, but no display on mini display port. Internal display is ok, blinking folder. R5350 and R5351 are ok, 2 kohm, voltage on all their pins is 3.4V PP3V3RHV_S4_TBTBPWR_F = 3.3V...
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    820-3455 no green light

    Hi, This I/O board for Macbook Air is powering the board properly, but no green or orange light appears. Is there any schematic available for it? I cannot find one on internet. Or any clue what to look at?
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    View csv files from scope as an image in Windows

    Hi, My scope can save waves to csv, but not directly in jpg. I would like to view back these waves in Windows to put them in documents, so in jpg for example. I tried Wave Editor, but it seems limited to 2048 samples and is also globally very limited. TTScope does not accept csv files. Any idea...
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    820-2530 battery not visble for OS X

    Hi, This board is not charging the battery (green light always present) and in OS X it says: Battery not available. If I cut DC IN, the board stops. I tried with another good battery, same issue. BATT_POS_F=12.15V SYS_DETECT_L=0V SMBUS_BATT_SCL= moving between 34 and 125mV SMBUS_BATT_SDA= moving...
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    820-2530 no WIFI

    Hi, I have this old board, with no WIFI. L3401 was water-damaged as well as 2 pins. I replaced it, but one of the pin is completely destroyed, and it goes directly to the processor. See photo : do you think it is possible to scrap until reaching a trace, and then solder to L3401 with a wire?
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    Macbook Pro 13" Early 2011, cannot install High Sierra

    Hi, This Macbook is working fine, ASD 3S144 showed no issues. I tried to install High Sierra, but the installation stopped and I came back to the initial installation menu. Then I managed to install El Capitan, it updated the BIOS during the installation. I downloaded an update from Apple, and...
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    820-00012 shorted on PP5V_S4

    Hi, This I/O board from a Macbook Pro Retina 2015 is preventing the main board to start because it's shorted on PP5V_S4. Do you have a schematic for it? I cannot find it on internet. Can I inject some voltage on PP5V_S4 to find the short?
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    820-3476 HWMonitor shows Battery current 253A when charging

    Hi, This board boots fine, charging fine, but when charging HWMonitor displays Battery current around 253A. I checked on another working board, same result. Is this a bug with HWMonitor?
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    820-3115: 3 beeps on one slot

    I have this board which works fine with one memory slot, but does the 3 beeps if I insert any memory module in the second slot. I don't know from where to start. I have read about a testing memory card which I don't have and don't plan to buy given the age of the board. What could I do?
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    820-00165 PPBUS_G3H : 0V

    Hi, On this board, initially PP3V42_G3H and PP1V2_S5_SMC_VDDC were shorted (voltage was 2.6V then). I had to remove SMC to figure it out, which I soldered back, but still PP1V2_S5_SMC_VDDC was at 0V. So I have now: PP3V42_G3H : 3.4V PPBUS_G3H : 0V PP1V2_S5_SMC_VDDC : 0V PP3V3_S5_SMC_VDDA ...
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    820-3476 PPBUS_G3H=0V

    This board has no fan, no green light on charger. PP3V42_G3H=3.45V PPBUS_G3H=0V On U7000, pin 2 : CHGR_DCIN=0V. I checked D7105, in diode mode I have 2.85V in one way and 2.27V in the other, so I believe it is dead (values on a good one: 3V and 0.25V) On U7000, resistance on pin 2 is 2 ohm...
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    820-3476 Airport test and load test errors

    Hi, It is a clean board, which gives no errors when running Macbook internal diagnostic (D key). WIFI and Bluetooth work fine. On the other hand when I run the ASD 3S162, I got errors on load test and airport test, see attached (ignore the first sensor group error, I simply did not have the DC...
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