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Macbook Air bad screen - or...??

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  • Macbook Air bad screen - or...??

    This is replacement screen on A1466 macbook Air 820-00165-A. Half the screen image is dim. Did I get a bad screen? O'scope image is of LED_RETURN_1-6. Of all remaining pins - only I2C_TCON_SCL_R = 3.3 VDC. backlight is 24.66 VDC.

  • #2
    Very very likely a bad LCD

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    • #3
      If all 6 return lines give the same signal, then could be the screen.

      "Of all remaining pins - only I2C_TCON_SCL_R = 3.3 VDC"
      I don't really what you mean to say.
      SCL/SDA lines should both have 3V.
      If not, check R8361-64 and diode mode to ground.

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      • #4
        Thanks for that response! I meant those were the only voltages present on connector aside from backlight. I hope this helps others.

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