HT201581: Find your Mac's serial number in About This Mac or System Information
Learn about Find your Mac's serial number in About This Mac or System Information
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Helpful answers
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Jun 12, 2013 3:56 PM in response to vinayakvaidyaby petermac87,Do you have a spare charging cable to try?
Pete
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Jun 12, 2013 3:57 PM in response to vinayakvaidyaby Topher Kessler,Try resetting your computer's system management controller (SMC) to see if that helps (see here for how to do this: http://support.apple.com/kb/HT3964).
Beyond that, you can try using another power supply, in the event the problem is a broken power adapter.
Lastly, if neither of these show differences, then you will need to take the system in for servicing, as there may be a damaged component on your system's motherboard or other power-handling circuits.