Light fixture stopped working entirely

Symptoms

• Flipping the switch produces no light at all
• Fixture worked fine recently with no visible damage
• Other lights on the same switch or circuit may also be affected

Likely causes

• CommonA burned-out bulbThe simplest and most common cause, especially for single-bulb fixtures.
• CommonA tripped breaker for that circuitCheck the panel if multiple fixtures or outlets nearby are also dark.
• PossibleA failed switch controlling the fixtureThe switch itself can fail even if the fixture and bulb are fine.
• PossibleA loose or corroded connection at the fixtureWiring inside the fixture box can loosen over time or with vibration.
• PossibleA failed fixture component like a socket or ballastOlder fixtures with ballasts or worn sockets can fail independent of the bulb.

What to do

1. Replace the bulb with one you know is working.
2. Check the breaker panel for a tripped breaker on that circuit.
3. Test the wall switch by checking if it feels loose or doesn't click normally.
4. Turn off the breaker before removing the fixture cover to inspect wiring.
5. Confirm the fixture is dead with a non-contact voltage tester before touching wires.
6. Look for a loose wire nut connection or corrosion at the fixture's wiring.
7. Replace the fixture or have an electrician check deeper wiring if the bulb, switch, and visible connections all check out fine.

Tools and parts

• Non-contact voltage tester
• Step ladder
• Screwdriver

When to call a pro

Call an electrician if wiring inside the fixture box looks damaged or corroded, or if the problem isn't the bulb, switch, or breaker.

Safety