You'll need to have decent eyesight for this.(or magnification) Get a dental pick or a needle, or something with a sharp edge(a knife does work as well) lift up the tab that holds the contact in place, and pull the wire out.

The contact will have 2 sides that have become loose on the pin, so squeeze them together. I used my fingernails, but you can also use tweezers

This was my actual problem, THIS TIME, and it's the first time this happened on this stick for me. 99% or the time, it's been a broken wire. My problem was the ground wire contact.