Nice writeup. Very well done. I was getting issues with my controllers. If I was withing 4ft it was okay, but further than that it became very poor, laggy and disconnecting. Never been dropped, took it apart following the guide, great information on tools required.
My antenna was fine, no broken wire at the end. However the plug that goes to the main board was a bit discoloured and tarnished. Cleaned up and reseated. Works like a dream now, far end of the room still working great.