As many owners of a macbook, the connector of my power adaptor sadly broke a few days ago :(. The cables and plugs seem too thin, and tend to break inside the magsafe connector after many bending. For all non-apple devices, connectors are reinforced to limit the being radius, which rises the life time.
So, let's try to repair it!
After disassembling the connector (using a pliers to pull on the metal part):
Then removing remaining metal threads from the internal board:
Re-soldering cable on the connector board (not easy, as it's very small and soldering is just on surface), with some white electric tape to avoid any short-connections (using hot glue should be better):
Repackaging the connector (my work take more place than original set-up: it was hard to close):
I finally fix it, my laptop came back to life.