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Hi. My Magsafe 1 AC adapter (from Macbook Air, 45W) doesn’t work suddenly. No LED indication what so ever. No damaged visually find, even wire is fine. I have a volt-meter, so I can check some resists or volt. Please let me know what should I check… These are current status : Pin 1+2 : Not shorted. 0.44V, 200k Ohm when not plugged in, 5M Ohm when plugged in. Pin 4+5 : Not shorted. 0.44V, 130k Ohm when not plugged in, 2M Ohm when plugged in. Pin 1+5 or 2+4 : Shorted, 0.0V, 0 Ohm What I heard, it should about 6V when it’s not connected to notebook. Mine does 0.4V only. Help me please.

Here a picture (on the right) or the pin outs: http://en.wikipedia.org/wiki/MagSafe Pin 1 0 V Pin 2 V+ @ 14.5 / 16.5 / 18.5 / 20 V DC Pin 3 Charge control pin Pin 4 V+ @ 14.5 / 16.5 / 18.5 / 20 V DC Pin 5 0 V