If a light in the home stops functioning and troubleshooting reveals that the light switch has stopped working, the switch can be easily replaced. This is an electrical repair project so caution should always be taken. Within a few minutes, you will have a new light switch installed in the wall and the light will again be working properly.
You will need:
Step 1: Turn off power to the affected switch via the fuse box or main circuit breaker. Flip the switch to test it, making sure the power is not on. Place a piece of masking tape over the circuit or fuse so it can later be easily located.
Step 2: Use a screwdriver to remove the two screws that secure the light switch cover plate. Save these screws. Remove the cover plate.
Step 3: Use the screwdriver to remove the two mounting screws that anchor the switch to the electrical box. Save these screws.
Step 4: Pull the switch out of the box. It should extend several inches, exposing two wires.
Step 5: Remove the screws that hold the two wires to the switch. The screws should be color-coded. Create a tag for each wire, noting which color screw it came from, using the masking tape and marking pen.
Step 6: Go to the hardware store, bringing the switch in order to find an identical replacement. If in doubt, ask a store employee for assistance.
Step 7: Hold the new switch up to the wall, ensuring that the word “off” shows right side-up when the switch is moved to the off position.
Step 8: Using the tags created in Step 5, attach each wire to the appropriate screw on the back of the switch.
Step 9: Use the mounting screws to attach the new switch to the electrical box.
Step 10: Replace the cover for the switch, using the screwdriver to secure the screws.
Step 11: Turn on the correct fuse or circuit breaker, plug in a lamp, and turn on the switch to ensure that it works.