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原帖由: arbaman ,

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If you have no green light there’s a fault on the initial stage of power lines creation, reasons may be a few, a bad aftermarket charger may  cause damage to the charging circuitry and the protection circuit. There could also be a short somewhere else taking down main power circuit, it’s pure guess without thoroughly testing the logic board.

It’s not a typical DIY task, your options would be replacing the logic board or finding a lab performing component level repairs, best if with specific experience on Macs.

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