Why outlets fail
Many outlets are wired using push-in (backstab) connections that can loosen over years of heating and cooling. A loose connection creates resistance and heat, which can darken the outlet, melt the plastic or cause downstream outlets to stop working.
A dead outlet often isn't broken at all — it may be downstream of a tripped GFCI in another room, or on a switched circuit. Troubleshooting starts with those simple possibilities before replacing parts. See outlet not working for what you can safely check first.
What the work typically involves
Check the easy causes
Confirm the breaker, nearby GFCIs and any wall switches controlling the outlet.
Test the circuit
Check voltage, polarity and ground at the outlet and upstream devices.
Repair connections
Remake loose or backstabbed connections and replace damaged devices.
Verify the circuit
Test the whole circuit so downstream outlets work too.
Common reasons homeowners call
- A bathroom or kitchen outlet stopped working
- Outlets that lost power after a storm
- Worn outlets that won't grip plugs
- Warm or discolored outlets
- Outlet sparks when a plug is inserted
Signs it is time to call an electrician
- Burning smell or melted plastic
- Visible scorch marks
- Outlet warm with little or nothing plugged in
- Sparks larger than a tiny flash when plugging in
- Shocks or tingles from the outlet
Safety considerations
Stop using it. Stop using an outlet that's warm, discolored, buzzing or sparking. Turn off its breaker if you can reach it safely and don't open the outlet to investigate.
What an electrician will check
- Upstream and downstream connections
- Backstab versus screw terminations
- Polarity and grounding
- GFCI and AFCI protection
- Circuit load
Related electrical problems
Related residential services
Electrical Outlet Installation
Adding outlets where you need them — including USB, 240-volt, outdoor, countertop and dedicated appliance outlets.
GFCI Outlet Repair
Fixing GFCIs that won't reset, trip constantly, fail the test button or leave outlets without power.
Electrical Repair
Diagnosis and repair of dead circuits, failing outlets and switches, tripping breakers and other everyday electrical faults in your home.
Electrical Troubleshooting
Systematic testing to find the cause of intermittent power loss, tripping, flickering and other electrical faults that aren't obvious.
Frequently asked questions
Often a GFCI upstream has tripped, or a loose connection at one outlet has interrupted power to the ones after it.
A tiny, brief flash can be normal when an appliance is switched on. Large sparks, popping sounds or scorch marks are not — stop using the outlet.
A warm outlet usually signals a loose connection or overload. It should be checked, and the device is often replaced along with correcting the cause.