My brother made the mistake of trying to save some big money by buying a "genuine replacement" MacBook power adapter bought on Amazon . The replacement adapter was under $30, was highly rated, and looked exactly like the Apple adapter. But it burnt out his Mac after a year of use. Evil Replacement Mac AC Power Charger Huge money save? Nope! After about 18 months, my brother's MacBook Air stopped working completely. He asked me, the family tech guy, to take a look and perhaps repair the damage. I looked at it and immediately noticed that the MacBook's power pins were covered in carbon soot. That's an indicator that the counterfeit charger was dumb enough to supply fully power over the small pins as the adapter was being connected to the MacBook. This is a behavior results in sparks,which chews away at the pins. Burnt Out Mac Power Pins, removed from damaged MacBook Then I looked at the connector on the power adapter's cord. Ouch, the p...
Useful and Useless Ideas from Lance J.