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Spent 4 hours chasing a phantom short in a 2015 MacBook Air only to find a single grain of solder under the logic board
Has anyone else had a tiny, conductive speck cause a full system failure, and what's your best method for cleaning under BGA chips without an ultrasonic bath?
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ryan_stone1d ago
Honestly, that sounds like a lucky find and not the real problem. A single grain usually gets vaporized on power-up and wouldn't cause a persistent short. You probably fixed it by reseating the board and the solder was just sitting there. For cleaning under chips, a good flux wash and some high percentage isopropyl alcohol with a soft brush is all you really need.
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holly_craig1d ago
Remember that time a stray cat hair bridged my RAM slots?
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