To get to the tube, I first drilled out the old pin. In some cases the tube is replaced, but here I built up the broken tube by filling it with 14k “hard” solder and re-drilled the tube. The links were then put back together and a new wire pin was put in and soldered on the ends using “easy” solder. The last picture shows the pins sanded and ready to be polished.
Hinged bracelet repair