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1.7 GHz dual-core Intel Processor (Turbo Boost up to 2.6 GHz) with 3 MB shared L3 cache

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MacBook Air 2012 - WiFi not detected!

Hi!
I have a really nasty and dusty Macbook Air mid 2012, which couldn't turn on. After a dust-off and cleaning it turned on again. I think the charging port was making a bad connection. I have cleaned the logic board too with IPA and a light brush.
I have Bluetooth, but not WiFi. The WiFi card is getting a little bit warm, but nothing crazy.

How can I figure out what the problem is? Any known voltages out there or something like that? Can the U1800 (pch) chip have anything to do with this? Could the Airport card be half-bad?

Thank you in advance!

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The AirPort board has two connections. The Bluetooth uses USB, where WiFI uses a PCI connection.

So it’s possible one connection works and the other not. So it could be a bad coax cable or a bad board.

MacBook Air 11" Mid 2012 AirPort/Bluetooth Board Replacement

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Do you have an idea to find out if the Airport card is the problem or if it is something else.

I have a Macbook pro early 2015. Would it hurt if I tried to swap the WiFi cards?

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@zoneknud - That’s what I would do, just swapping the AirPort board.

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Anders will be eternally grateful.
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