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The smaller of Apple's MacBook Air laptops featuring dual microphones and 802.11ac Wi-Fi connectivity.

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What's the function of I/O board?

I'm getting amber and green light on charger but laptop won't switch on, I can't figure out the problem, I'm guessing it's with the I/O bosrd, what's the function of I/O board?

Beantwoord! Bekijk het antwoord Dit probleem heb ik ook

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Can you give us a history on the machine? Any impacts, repairs, liquid damage. Animals sleeping on the keyboard? Monsoon weather? Has it been opened and inspected? Corrosion evidence?

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No corrosion evidence, the logic board looks very clean, and yes there was liquid damage but it was 4 months back the laptop worked for 3 months suddenly one day it shut down and didn't switch back on

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I/O board has multiple functions:

  • MagSafe interface
  • USB port
  • Headphone jack
  • Microphone

The jack and mic connect to the Cirrus DAC chip (Marked in Red) Looking on the other side we can see the power lines from the MagSafe connector which connects to the main logic board.

Sadly, I suspect your main logic board has a problem.

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I'm afraid you might be right

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Kavi Harjani zal eeuwig dankbaar zijn.
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