Locate thermal fuse then remove it with the spudger and cutting tool by cutting the wire on either end.

After removal of the fuse, place the new HPK12 Thermal Fuse in the socket and solder the wires to their intended locations.

This is an extremely difficult and dangerous step and should only be done by someone comfortable soldering. If comfortable, carefully review this soldering guide to ensure proper procedures are followed to prevent injury or destruction of device.