If the wire is frayed, broken, or discolored, use wire cutters to cut at least ½ inch (1–2 cm) beyond the visibly damaged area. Cut straight across the wire to ensure even ends.

Cutting too short can make it harder to reconnect the wire to the circuit board. Leave enough slack for soldering.

If you are using a razor, put the wire on a flat surface and carefully slice with little pressure to avoid pressing the blade into your finger.