The MacBook family was first introduced in May 2006 and replaced the iBook as Apple's consumer laptop.

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AC adapter generates no LED light and no power.

I have an AC adapter from the first generation of Magsafe adapters. I plug it into a known working MacBook. There's no LED and the MacBook indicates it's running off the battery.

I jiggle the cord right in the "wrong" places - the area just outside the Magsafe head and the area just outside the transformer block. I can't get a reaction.

I was able to crack open that transformer block, but I can't see any electrical stress anywhere. I can't see any burning or scorching.

Is there a way I can test either end to see which one may have frayed interally?

I can probably perform repairs on the transformer side and the Magsafe side. I'm more experienced on the Magsafe side - I always strip off too much wire. I have yet to perform repairs on the transformer side. I'm wondering if there's any way to use the strain relief that sticks out of that transformer block.

Thanks for reading!

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The Fixers Collective's Facebook page features a successful Magsafe repair. Looks like they didn't find telltale signs either (burning or scorching).

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The MagSafe pin out is to the right: http://en.wikipedia.org/wiki/MagSafe

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