Model A1181: 1.83, 2, 2.1, 2.13, 2.16, 2.2, or 2.4 GHz Core 2 Duo processor

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Why won't computer start after magsafe adapter mishap?

When I found that my computer wouldn't start, I removed the charger from the port (DC end) and the computer side of the port was brown, cracked and had what appeared to be magnetic debris lodged inside. There was also a pungent smell around the charger port. After I cleaned the port (no liquids) I plugged the adapter in and hit the power button, only to hear a sizzling noise! I'm wondering a) how something managed to get inside the port while the charger was plugged in, and b) how can I tell if this is just a blown fuse, or a fried computer, short of taking it apart. I've tried taking out the battery, using other chargers, resetting the SMC, PRAM, etc. I've cleaned it with compressed air and other safe methods. ALSO, the battery is fine, the indicator light flashed 4 bars.

This is a late 2007 MacBook that I've had since about that time.

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There was probably a small metal object stuck in your MagSafe port (because of the magnet) and you shorted the internal pins when connecting the AC adapter. If you're lucky and there's no damage to the logic board replacing the MagSafe DC-In Board should restore the power connectivity to the MacBook.

MacBook MagSafe DC-In Board

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Will it start up from just battery power?

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Don't know but anyway the MagSafe port is toasted and need to be replaced so that's the first part I would replace. I would also check for physical signs of logic board damage (burned components on the board).

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