[Noisebridge-discuss] MacBook power cord broken at transformer

[dana]

I repaired an adapter with the same issue about a year ago, try YouTube for tutorials! If you need a new cable check eBay. 

Also, some folks have shared 3d printable strain relief solutions for macbook adapters. I highly recommend them -- they've significantly prolonged the life of mine!

http://www.thingiverse.com/search?q=magsafe&sa=