Symptoms
- USB ports on the outlet show no charging indicator or don't power devices
- Regular plug side of the same outlet still works fine
- Charging is slow or intermittent from the USB ports
Likely causes
- CommonA failed USB charging module inside the outletUSB circuitry in combo outlets wears out independently of the regular outlet plugs.
- CommonA faulty charging cableCables fail more often than the outlet itself, so it's worth ruling out first.
- PossibleAn overloaded or incompatible device drawSome devices need more power than an older USB outlet can supply.
- PossibleA tripped breaker or GFCI for that outletIf the regular plug side is also dead, this is more likely than a USB-specific failure.
What to do
- Test the regular plug side of the outlet to confirm it has power.
- Try a different, known-working charging cable in the USB port.
- Try a different device to charge, in case the original device's charging port is the real issue.
- Check the breaker and any GFCI feeding this outlet if the plug side is also dead.
- If the plug side works but USB ports don't with multiple cables and devices, the USB module has likely failed.
- Replace the outlet with a new USB combo outlet if the internal charger has failed.
- Turn off the breaker before replacing the outlet.
Tools and parts
- Screwdriver
- Non-contact voltage tester
Replacement USB combo outletSearch: “USB wall outlet combo receptacle”
When to call a pro
Call an electrician if you're not comfortable replacing the outlet yourself.
Safety
Use caution
Turn off the breaker before replacing any outlet, and confirm it's dead with a voltage tester.