Dead Battery Chargers for Macbook

Hi,
I hope someone can help. About two weeks ago my sister's charger for her white macbook (brought in January 2008) died. This is no problem because I have a black macbook (brought in April 2007) so she was using my charger until we brought a new one. However, my charger is now dead. So I am wondering whether her mac could of possibly done something to cause both chargers to die or whether it is just a coincidence that both chargers died within weeks of each other.
Can anyone help?
Message was edited by: evoleen

If the magsafe connection on her MB is damaged, it might be causing arcing to take place between the pins of the charger or between the two parts of the magsafe connection (the part attached to the charger and the part attached to the computer). If this is occurring the pins of the charger and the surrounding area will like have a blackened or browned appearance.

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Dead Battery Chargers for Macbook

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