Adaptor to MacBook does not light up
It seems that my MagSafe adaptor is not working
iPad, iOS 6.0.1
Mine do that from time to time. The acid test is to check the icon in the menu bar. If it says you are charging or the percentage is 95% or greater and you see a electrical plug icon, you are ok. If you see a black battery icon, then the charger is not working. Wiggle the connector and see if it will start functioning again. If not, you may need a new one. If available, try a different one to see if the problem is the power adapter or the MBP.
You may also look at this Apple support article for additional information.
http://support.apple.com/kb/TS1713
Ciao.