Symptoms
- Flipping the switch does nothing
- Switch feels loose, doesn't click, or sticks in position
- Other switches nearby still work
Likely causes
- CommonA burned-out bulbIt's the simplest explanation and worth ruling out first, especially for a single fixture.
- CommonA worn-out or failed switch mechanismSwitches wear out after years of use and can fail to make contact even when they still click.
- PossibleA tripped breaker for that circuitIf nearby outlets on the same circuit are also dead, check the panel.
- PossibleA loose wire connection at the switchLoose connections can cause intermittent or total failure.
What to do
- Replace the bulb with one you know works, if it's a single fixture.
- Check the breaker panel for a tripped breaker on that circuit.
- Test whether nearby outlets on the same wall or room are also affected.
- Turn off the breaker for that switch before removing the cover plate.
- Confirm the switch is dead with a non-contact voltage tester before touching wires.
- Look for a loose or disconnected wire at the switch terminals.
- Replace the switch if wiring looks fine but it still doesn't work.
Tools and parts
- Non-contact voltage tester
- Screwdriver
Replacement light switchSearch: “single pole light switch”
When to call a pro
Call an electrician if wiring at the switch looks damaged, or if you're not comfortable replacing it yourself.
Safety
Use caution
Turn off the breaker and confirm the switch is dead with a voltage tester before opening it.