Short answer
One dead light with everything else on that circuit working is a local fault, not a wiring problem in your house. Flip the switch and feel it. A switch that wobbles in the wall, or shifts behind a plate that feels tight, has worn out or torn loose from its box, and a new switch brings the light back. If the switch feels solid and a known-good bulb still does nothing, the fault is in the fixture, and an integrated LED panel with no replaceable bulb means the whole fixture gets swapped.
Tell a dead switch from a dead fixture in five minutes
- Try a bulb you know works. Skip this step if the fixture is a flat LED panel with no bulb to change.
- Flip the switch slowly and listen. A switch that flips with no click and no light has usually failed inside.
- Wiggle the toggle side to side with the plate still on. A switch body that shifts behind a tight plate has pulled loose from its box.
- Press on the plate. If the plate and the switch move away from the wall together, the box itself is loose.
- Check the other lights and outlets in the room. One dead light means the circuit is fine.
- Look at the panel. If no breaker is tripped, leave the breaker alone.
- Look for cracks, scorch marks, melted plastic or a burning smell at the plate. Any of those, shut that breaker off and call an electrician today.
A loose switch that does nothing points at the switch. A solid switch with a good bulb and a dead fixture points at the fixture. Either answer ends at an open box with live wires behind it, so hire for this unless you can shut the breaker off and test the wires dead yourself.
Repair or replace
| Situation | What to do |
|---|---|
| Switch body moves in the box and the light never comes on | Replace the switch. The part is a few dollars and the labour is about an hour. |
| Switch is loose and the whole box moves with it | Replace the switch and re-anchor the box. A new switch on a loose box works free again. |
| Switch feels solid, a known-good bulb is still dead | Repair the fixture. The socket or the connections above it are the fault, not the switch. |
| Integrated LED panel dead, under 5 years old | Check the warranty first, then replace the fixture. |
| Integrated LED panel dead, over 5 years old | Replace the fixture. A driver costs more than a new panel and the fixture comes down either way. |
| Cracks, scorch marks or a burning smell at the switch | Hire for this. Shut that breaker off and get an electrician out the same day. |
| Other lights or outlets are dead too | Stop. That is a circuit fault, not one light, and it needs an electrician. |
What it costs
Runhome contractor estimates for replacing a dead wall switch ran from $115 to $250 as a planned install and from $155 to $315 on a repair visit as of October 2026, including the trip and assessment.
| Option | Range |
|---|---|
| Replace a dead wall switch on a repair visit | $155 to $315 |
| Replace a wall switch as a planned install | $115 to $250 |
Can I do it myself?
Yes for a plain single-pole switch, if you shut the breaker off and confirm the wires are dead with a non-contact tester. Photograph the connections first. Two or three wires move across to the new switch in the same places.
Hire an electrician if the box is loose in the wall, if more than one cable enters the box, if the wires are aluminium or cloth-covered, or if a second switch controls the same light. Hire for the fixture too, because a ceiling panel has to be held, unwired and rewired overhead. Hire for this the moment you see scorch marks or smell burning, because that connection has been arcing and the damage sits inside the box.
What a contractor will ask you
Have these ready and you skip the back-and-forth.
- Whether anything else is affected. Walk the room and try the other lights and outlets.
- What the switch feels like. Note whether the body wobbles or the plate moves with it.
- When it stopped, and whether it went loose at the same moment.
- Whether the fixture takes bulbs, or is a flat LED panel with no bulb to change.
- The age of the switch and the fixture. A rough guess is enough.
- How many switches control that light. A second switch elsewhere means a 3-way pair.
- Any cracks, burn marks or discoloured plastic around the toggle.
- A wide photo of the whole switch plate, or of the ceiling fixture and its mount, not a close-up.
Common questions
- Why would a light switch get loose and stop working at the same time?
Both come from the same worn switch. The contacts inside stop meeting and the mounting screws lose their grip on the box, so it rattles and goes dead together. One new switch fixes both.
- Do I need an electrician for one dead light?
Not always, but you do if the box is loose or the fixture has to come down. A worn switch on a modern circuit is about an hour of work. Scorch marks or a burning smell is an electrician the same day.
- My ceiling light has no bulb to change. Can it be fixed?
Rarely for less than a new fixture. Integrated LED panels seal the diodes and the driver into the housing, and few makers sell the driver on its own. Check the warranty first if the fixture is under 5 years old.
- The light has been dead for a month. Does waiting hurt anything?
A dead light is not a hazard by itself. A loose switch is the part to take seriously, because the connections move every time you flip it. Moving connections heat up.
- Could a bad switch trip the breaker?
It can, though a worn switch usually just goes dead instead. A switch that trips the breaker when you flip it has a short. Leave that breaker off until an electrician gets there.