Most likely is the magsafe board. There are 7 models in the A1181 series, please remove the battery and give us the specific machine so we can direct you to the correct part and service manual.
UPDATE: download and run Coconut battery to see the status on it first: http://www.coconut-flavour.com/coconutbattery/
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Do you get a light on your AC charger? Where did the battery come from? Try running the Coconut battery on the old unit also and tell us the results on both. The problem is probably one of three things, the AC charger, the MagSafe board or the Battery Connector. Try removing the battery and starting from just the AC adapter and let us know what happens.
Most likely is the magsafe board. There are 7 models in the A1181 series, please remove the battery and give us the specific machine so we can direct you to the correct part and service manual.
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UPDATE: download and run Coconut battery to see the status on it first: http://www.coconut-flavour.com/coconutbattery/
Most likely is the magsafe board. There are 7 models in the A1181 series, please remove the battery and give us the specific machine so we can direct you to the correct part and service manual.