The answer to 'how to fix troubleshooting' is to follow a systematic approach to identify and resolve electrical issues. This involves visually inspecting the system, testing components, and using a multimeter to measure voltages and check for continuity.
Start by turning off power to the circuit or appliance you're troubleshooting. Visually inspect the wiring, connections, and components for any obvious signs of damage or wear. Check for loose connections, burned or melted parts, and corrosion. If you find any issues, make the necessary repairs or replacements.