What a strange thing to happen! I was just using my mac and out of nowhere the charging brick just lit up made and bang and then stopped charging. I unplugged it, absolutely no sign of damage but smells of burning (must have been inside the brick). Now it won't charge at all. The brick and wires and in perfect condition so I am quite surprise this just happened! I will be contacting Apple tomorrow evening and it is still under warranty, just wondered if this has ever happened to anyone else? Edit - upon closer inspection, one of the pins is slightly damaged / burnt.