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1.8GHz dual-core Intel Core i5 (Turbo Boost up to 2.8GHz) with 3MB shared L3 cache

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Isolating MacBook no power issue

Hi Everyone,

I have a 13" Mid 2012 Macbook Air that has stopped turning on.

I have tried multiple known good chargers - no light on any of them.

SMC Reset, unplug battery + power button all did not help.

No activity at all upon powering on. There are NO battery status indicators on this model to tell if battery is charged at all..

I assume that it is either the logic board or the I/O..

Is there a way to isolate this between a faulty logicboard and a faulty I/O Board?

I understand the $90 I/O Board would be a better place to start then the $400 logic board - but was curious if there was anything I could do to test for sure which is the failed component. Is there a way to send power to logic board bypassing the I/O Board? It's likely the battery is completely discharged so I don't think shorting the pads did not seem to work, due to I'm guessing no power in the system.

Thanks in advance

Beantwoord! View the answer Dit probleem heb ik ook

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There's really no way to tell until you drop in a new battery, get it started and run diagnostics.

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Is there no way to power the mainboard directly?

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I have a similar problem with my MacBook Air Mid 2013. Was working great the previous evening, then the next morning it would not power on. Plugged in with a new power cord - nothing. Replaced the I/O board, nothing.

Does this narrow it down to the logic board?

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mikejensen13 zal eeuwig dankbaar zijn.
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