The ceiling light comes on, but nothing plugged into the wall does. Or the lamps work and the overhead light is dead. Either way, half the room works and half does not, and the breaker panel looks normal. This split is actually helpful, because it tells you a lot about where the problem is before anyone opens anything.
Why lights and outlets can fail separately
In many homes, a room's lighting and its outlets are not on the same circuit. Builders often run the overhead lights for several rooms on one circuit and the outlets on another, or put the outlets of two neighboring rooms together. Even when they share a circuit, power reaches them along different paths: through the switch box to the light, and from outlet to outlet around the walls. So one half of the room can lose power while the other keeps it.
When the lights work but the outlets don't
This is the more common version. In rough order of likelihood:
- A tripped GFCI elsewhere. If the outlets in this room sit downstream of a GFCI in a bathroom, garage or outside, a trip there kills them while the lights, on another circuit, keep working. The CPSC's GFCI fact sheet describes how a GFCI receptacle protects outlets further down the circuit.
- The outlet circuit's breaker tripped. The lights are on a different breaker, which is why they are fine.
- A failed connection in the first outlet. The outlets are wired in a chain. If the connection fails at the first outlet on the run, every outlet after it goes dead. Push-in connections on the back of outlets are a frequent culprit in the homes we work in. See why one bad connection takes out a string of outlets.
- A switched outlet. If only one outlet is dead, check whether a wall switch controls it. Many bedrooms and living rooms have one.
When the outlets work but the lights don't
- The bulb or the fixture. Try a bulb you know works first. LED fixtures with built-in drivers can fail on their own.
- The switch. Switches wear out, and dimmers fail more often. A switch that feels loose or makes no click is a suspect.
- The lighting circuit's breaker. If several rooms' ceiling lights are out at once, a lighting circuit has tripped or lost a connection upstream.
- A connection in the switch or fixture box. Same chain logic as outlets, only the chain runs through ceiling boxes.
Our page on lighting repair covers fixtures, switches and dimmers in more detail.
What you can safely check
- Push the breakers for the room fully to OFF and back to ON, once.
- Press RESET on every GFCI in the house: bathrooms, kitchen, garage, laundry and outside.
- Flip every wall switch in the room, in case one controls an outlet.
- Test outlets with a lamp you know works, not a phone charger, which can fail on its own.
- Note which outlets and lights are dead and which work, including in the rooms on either side.
Stop there. Do not take outlets or switches out of the wall. A failed connection can be heat-damaged, and testing inside a live box is how people get hurt.
When to call promptly
Most lights-versus-outlets splits are an inconvenience. These are not:
- A warm outlet, switch or cover plate.
- A burning smell, or brown or black marks on a device.
- A switch that buzzes or sparks when you use it.
- Lights that get brighter and dimmer when appliances turn on and off.
If you see any of these, switch off the breaker if you can identify it, stop using the outlet or switch, and call. Our guide to burning smells and buzzing explains why.
What the repair usually is
For dead outlets, it is usually one failed connection or a worn GFCI. We find it by testing from the last working point toward the dead ones, repair the connection properly, and replace any outlet that has heat damage. For dead lights, it is usually a switch, a dimmer, a fixture driver or a connection in a ceiling box. See outlet and GFCI repair and partial power outages for how we approach both.
Questions people ask
Why did my outlets stop working when nothing tripped?
Usually a tripped GFCI in another room or a failed connection earlier on the circuit. Our guide to breaker not tripped but no power goes through the causes in order.
Why does only the top half of my outlet work?
That outlet is probably split so that one half is controlled by a wall switch, which is common in living rooms and bedrooms for plugging in lamps. Flip the switches in the room. If neither switch brings the dead half back, the outlet or its connection has failed.
Can I replace the outlet myself?
Florida limits electrical work to licensed electrical contractors, with narrow exceptions. Our guide to handymen and licensed electricians in Florida explains where the line is.
Need it looked at?
KRW Electric (EC13012832) troubleshoots and repairs dead outlets, lights and switches in Pinecrest, Coconut Grove, South Miami and Miami Beach, with same-day service when scheduling permits. Call (305) 359-7312 and tell us what you are seeing. We will ask a few questions, tell you whether it sounds urgent, and give you the earliest time we have. Our before you call checklist covers what to have ready, and what happens on a repair visit explains the rest.
Reviewed by Kyle White, KRW Electric Company LLC — licensed electrical contractor EC13012832.
