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MacBook Air A1466 'sudden death': MLB defect

donald -

MacBook Air 13" Mid 2012

MacBook Air 13" Mid 2012 Logic Board Replacement

MacBook Air 13" Mid 2012 Logic Board Replacement

1 - 2 hours

Difficult

My Problem

Apple MacBook Air suddenly decided to quit, no apparent reason.

Back-up of data, but not of all installed programs and their settings, including stuff like painstakingly tweaked 3D printer driver.

Downloading circuit diagrams and testing with DMM and scope did not really reveal cause, noticed some 2 or 3 caps connected to PPBUS_G3H becoming very hot though, suspected near-shorting or whatever.

Removal of these made no difference.

Apple Centre quotes high replacement cost and advises loss of SSD contents (data & programs)

My Fix

Ordered replacement Main Logic Board ('mid-2012') from IFixit.

Arrived 2 days later (US to EU).

Installing board is fairly easy. And SSD turns out to be the 'treasure-chest' indeed: computer starts up with everything the way it was. Mission accomplished.

Too bad the root-cause of the original problem remains unclear.

My Advice

Find an SSD SATA or USB converter and make back-up (image ?) of SSD contents.

MacBook Air 13" (Mid 2012) 1.8 GHz Logic Board Image
MacBook Air 13" (Mid 2012) 1.8 GHz Logic Board

$249.99

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