MacBook Air M4 A3240 Brand New Water Damage no Image

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  • Ugur87
    Member
    • Sep 2023
    • 21
    • Germany
    #1

    MacBook Air M4 A3240 Brand New Water Damage no Image

    I have a brand new 13.6-inch MacBook Air M4 that was only used for three days and now has water damage. A glass of water was spilled over it. I examined the motherboard and there was only water next to the display connector. I cleaned it with isopropanol and the components look clean. The MacBook obviously turns on and draws 20 volts from the power supply. The keyboard backlight comes on, but the display remains black. Where should I best start? Even when I shine a light on the display, I don't see any image. I have all the tools I need, including an infrared camera. Where should I best start? I haven't found a schematic for this model. I'm asking for help and tips.
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    • khaahk
      Badcaps Veteran
      • Dec 2013
      • 785
      • Estonia
      #2
      You can probably use schematic and boardview of 820-03285, from the pictures it looks similar, at least the screen part. Measure lcd backlight and 3V resistances first.

      Link to schematics:
      https://www.badcaps.net/forum/troubl...and-schematics

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