Since the problem arose after warranty I had to pay out of pocket for the replacement magesafe cord, which was a temporary solution, I pointed out that the magsafe power port on the laptop itself also had burn marks just like the magsafe cord that had a few pins pushed in and was slightly blackened but the attendant ignored that and said it was fine and just swapped out the cord. It was fine in the store for the apple worker, but after even just a few months I had to to constantly twist and unplug and replug the magsafe adapter from different angles just to get it to work, and it was like a living ****, as I am a digital artist and my wacom tablet will not work until my macbook pro is charging and the magsafe is orange, so everyday I would waste 30 minutes to an hour with the finicky magsafe, until recently my macbook pro will not turn on at all. After a year of owning my macbook pro late 2012 retina model, it started having difficulty charging, it wouldn't charge even when green on the magsafe, and had difficulty turning orange, basically right after the 1 year warranty was over by one month, I went into the apple store and they told me that I simply needed to replace the power adapter and cord and it would be fine, but that it most likely was caused by me plugging it into a power strip, and that I had to plug it directly into the wall in its own power slot, which they never said that was what you were supposed to do when I purchased the laptop and could not find it anywhere in the literature.