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Hi, recently I repaired my magsafe adapter because the wire to the end of the power adapter got broken. I repaired it by opening the case and rewired it. My the wiring was it bit loosely and the connection was broken again. Now I wanted to rewire it but, I don’t remember which wires belong together. Here you can see a photo of the adapter. Which of these (the left or the right) belongs to the inner and outer wire of the cable? http://charges.fotastisch.de/magsafe_rep… Update Thanks! Connected it like you said and checked it with a voltmeter. All works fine :)
Here’s a pictorial repair guide on the adapter that may help clarify your endeavor: http://www.instructables.com/id/MacBook-…
Wikipedia says that the outer pins are ground and the inner pins are +16.5VDC. Your picture shows two wires – black, and green/brown. By convention, black is ground, so that would make the other wire +16.5VDC – therefore, the black wire is the outer pins and the green/brown wire is the inner pins. However, in order to avoid blowing up your expensive computer, please double-check the polarity of your power supply using a voltmeter. (Wikipedia also says that your power supply may measure +6.86V with no load – so the important thing to measure is the polarity.)
Apple is now replacing these adapters for free as part of a class action settlement. Since you’ve already worked on this one they won’t replace it but for any others out there that have this issue, take it back to Apple for a free one.
