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With a multimeter, test all 3 PCB contacts to determine which are positive, negative and ground. Similarly, ascertain each terminal of your "new" charger port and its corresponding PCB contact. Your "new" port can be a brand-new, identical replacement or a salvaged one of approximate size, post thickness and terminal orientation.

Unless an identical part replacement, you may have to bend your ports terminals in order to make proper contact and'or enlarge the panel opening for the AC plug as I did. To avoid repeat part failure, I hot-glued my charger port onto my PCB after reinforcing my port's terminals with thicker wire and generous solder.

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