Turn off the power to the switch at the main circuit breaker or fuse panel.
How to fix a wall light switch.
If the switch is miswired it s easy to rewire.
You may also want to use a circuit tracer to identify the circuit breaker or fuse you need to turn off.
How to troubleshoot a faulty wall switch.
When a switch stops switching then it s time to troubleshoot and repair or replace the switch.
Unscrew and remove the switch plate.
A variation of the traditional toggle switch is the lever action switch which lies almost flush with the wall.
To replace this kind of switch follow these steps.
To replace a light switch start by disconnecting the power to the switch by shutting off the breaker for the room.
Before you do any work on a switch make sure power is turned off at the electrical panel.
Unscrew the switch from the electrical box and pull it out with the wires still attached.
You can test the switch with a voltage tester to determine which is the problem.
The single pole toggle switch is still the most popular.
The moving parts of a standard light switch are enclosed inside plastic casing so when the switch goes bad your only option is to replace it.
Then use a voltage tester to make sure that the circuit is dead.
Once the power is cut remove the switch cover and mounting screws with a screwdriver and pull the old switch from the wall.