Hello,

I was asked to look at a coworker's A1278 MacBook. Logic board is 820-2936-B. The laptop boots to question mark. Drive mounts fine on another MacBook, tried a new SSD with the same result. Pins in the drive end of the flex appear to be in good condition. Inside of the device was very dusty with lots and lots of cat hair.

Recommendations on what to check would be most appreciated. I have a microscope, oscilloscope, budget fluke multimeter and soldering station on hand. Some additional items such as a bench multimeter, frequency counter, vsa at home that could...

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Hello,

I work for an iT consulting firm. As such, solving problems is an every day thing for me. I'm looking to bring component level repair into my body of knowledge. Maybe even salvage a few MacBooks along the way.

Cheers!

J