Make sure you have the proper tools and skill to work on your pickup without damaging it any further. I would send it to a qualified repairman experienced in working on pickups or the original pickup builder. About 70% of the broken pickups I get in can be repaired without rewinding. Just about any pickup that has broken external wires can be repaired or restored. Coils with internal breaks from ICPC (inner coil pole corrosion) are more difficult to repair and the coil can be unwound to the break and rewound with the original wire. I can be difficult to repair broken beginning or internal wires.

I enjoy working with my microscope to get a really close up of the pickup I’m working on. It allows you to see cracked or shorted turns and to see the damage caused by guitar strings that get lodged into the coil by players that don’t know how the pickup just stopped working! That’s why it’s always important to remove the strings when removing or replacing pickups. The coils can easily become damaged.