Remove the fairing preceding the broken joint, i.e. the last non-moving link fairing when the broken joint is actuated.

For J5, this requires removing the 5 screws on the front and 2 screws on the back.

The screws should be 2.5mm hex but may depend on the specific robot. The lengths may be different so do keep track of where each screw came from.

Use caution when unscrewing as they are easily stripped.