How do you repair a universal charger?

To repair a universal charger, first, disconnect it from the power source and inspect the cable for visible damage or frays. If the cord is damaged, you can cut and strip the wires, then reconnect them securely or replace the entire cord. Check the internal components, such as the circuit board and connectors, for signs of damage or burnt areas, and replace any faulty parts. Finally, reassemble the charger, ensuring all connections are secure, and test it with a compatible device to confirm it works.