Macbook Air A1466 EMC 3178 - 2017 Boot

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  • Sergio Kub
    Senior Member
    • Jul 2018
    • 161
    • Brasil
    #1

    Macbook Air A1466 EMC 3178 - 2017 Boot

    Could someone help me?
    I have a Macbook Air A1466 EMC 3178 - 2017, board 820-00165 and sometimes the boot interrupts with an image of a folder and a question mark.
    Could it be the BIOS?
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    • Sergio Kub
      MAcbook Air A1466 EMC 3178 - 2017 Boot
      by Sergio Kub
      Could someone help me?
      I have a Macbook Air A1466 EMC 3178 - 2017, board 820-00165 and sometimes the boot interrupts with an image of a folder and a question mark.
      Could it be the BIOS?
      07-08-2025, 04:41 PM
    • jheunne
      A1466 macbook no boot green to orange light help
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      i have macbook a1466 board id 820-00165 with power fan spin green to orange light not booting no image or light i tried to fix its leak chip number U1930 but sad it has been damage due of corrosion here i attach the image of board. possible there is a jumper ways for it can't find parts for it to buy.
      in first image there is 0v out for lcd
      https://ibb.co/5XppmpkH      ​
      in 2nd image U1930 chip is damage is there any jumper solution or parts can be compatible for it
      https://ibb.co/fdJkbJs8
      06-10-2025, 10:52 PM
    • BMCappelletti
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      Hi everyone.
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    • sherifu
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      Hello guys, i have an Macbook Air A1466 Emc 3178, board number 820-00165-A and i encountered following problems. At first no light, no power..after opening and cleaning the LCD socket(Red dot under LCD plug and also Orange dot near wifi card)..got light on charger, fan working and chime...Tried several times and working, then short time after dead...next day work again for short time...after removing the board and cleaning the back(rust on components) with alcohol and soft brush, one of the resistor is gone and no power ..I want to change 5 (buy from China) of them (1 missing and 4 bot looking...
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    • longislandtea
      MacBook Air 2017 A1466 EMC 3178 820-00165-A No power
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      Hi, I' ve this MacBook Air with a strange problem. This laptop come in to my shop with initial problem PULSING (ON/OFF, no fan)

      I wrote this attached bios dump that I clean me region by ME INJECT software and Macbook Power on but have a strange defect.

      The Macbook Power on only when I connect the AC adapter without battery. It Never power on by clicking power key on keyboard. I also tryed to power on by SMCbypass on the motherboard.

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