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?
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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?
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I/O board has multiple functions:
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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