I really appreciate it. Thank you.
820-02536 A2681 sch & brd PDF's only
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by mferna14Hi, my dear friends., Maybe this might be a stupid question or something I missed or do not know. I have 2 MacBook Air A2681 (Indentical color & EMC #), both LCD screens broken. Before ordering the LCD Screens I confirmed both worked with their respective batteries & AC Adapters, & they did 100%. The LCD Screens came in today & I replaced LCD for the 1st A2681. (Removed Battery Terminal cable for both Laptops before installation of LCDs). Perfect Screen & Booted up fine. But it did not work with battery. I checked the battery connector & it was seated in well/perfectly....
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by kuba2102Hello people. I have undertaken an upgrade from 256GB to 512GB. I have another A2681 board that I sourced NANDs, resistors and capacitors from. Yet when I try to restore the firmware in FDU mode I get the error 0x23 (35) (error formatting the NAND). Could it be the faulty NAND or I have missed something? Thank you...07-03-2025, 12:20 PM
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by Dylan JonesHi all,
I'm a beginner at laptop repair. I bought a MacBook Air A2681 that doesnβt turn on, just for practice. PPBUS_AON and the other always-on voltages are present and look fine. I did some diode mode measurements and got unusual readings (compared to reference values I found online) on LC320 (44mV) and L82D0 (40mV). LC320 corresponds to the PP5V_S2 power rail, and L82D0 to PP1V25_S2.
I injected 1V (current limited to 100mA, the board consumed around 86mA) into PP1V25_S2 to see if anything would heat up, but everything seemed normal. I did the same with 5V (current limited... -
by iMuhtasebWow it's been a while since I posted!
This is a weird case, it has a history of liquid spill a year ago but customer did not want to replace neither trackpad or keyboard.. fast forward for today:
A2681 turns on but not trackpad or keyboard feedback (or external keyboard and mouse) and then after a minute or so the Mac sleeps..
It's a NOT a sleep sensor or trackpad or keyboard or daughterboard or anything else (I replaced all those); it's the logic board..
Tested another locked logic board on customer's top case and it posted with keyboard and...05-22-2025, 09:59 AM -
today i received a board a2681 820-02536 m2 this board stuck in 5 volt i check some volt all ok but pp3v3_aon is low, here 1.6v , when I hit the pmu it turned on, then after a while it did not turn on, then I changed pmu but same problem , someone help me what is the problem why pp3v3 is 1.6v i checked here no short...02-20-2025, 12:26 PM
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