Stop if there is heat, burning, arcing, exposed parts or water near the socket
Do not remove socket covers, touch exposed conductors or continue using damaged accessories. Leave the socket or circuit off and call a registered electrician where danger signs are present.
MOST LIKELY CAUSES
Start with these
Symptom variations Match the exact behaviour before testing. ⌄
- Plug will not pull out
- Socket or plug feels hot
- Plastic appears melted
- Plug moves slightly but catches
- Socket face pulls away from wall
Quick checks Safe checks using plugs and front-panel switches only. ⌄
- Test the appliance in another known-good socket.
- Test the socket with a known-good small appliance.
- Check the consumer unit for a tripped breaker, RCBO or RCD.
- Look for heat, smell, damage, moisture or recent building work.
- Attempt one controlled reset only if no danger signs are present.
Fix 1 — Switch off the socket and circuit Follow this check without opening live electrical accessories. ⌄
Process
Use the socket switch, then isolate the circuit if safe.
Fix 2 — Do not twist or yank Follow this check without opening live electrical accessories. ⌄
Process
Hold the plug body, not the cable, and avoid force.
Fix 3 — Arrange removal and replacement Follow this check without opening live electrical accessories. ⌄
Process
A competent person should remove the accessory after safe isolation.
Common causes explained Why the fault may happen. ⌄
A plug may become stuck because of overheated pins, melted plastic, damaged shutters, bent pins or a distorted socket. Do not pull hard while the circuit is energised.
Socket faults can be local to the accessory or caused by a wider circuit problem. Heat, crackling, repeated trips and intermittent operation should never be treated as harmless.
Advanced diagnostics Technician-level testing for a competent electrician. ⌄
- Prove dead before removal.
- Inspect plug pins and socket contacts.
- Check cable termination and accessory fixing.
- Assess thermal damage to back box and cable.
- Replace both plug and socket where heat damage exists.
Parts that may need replacing Common failed components linked to this fault. ⌄
- Socket accessory
- Plug
- Power lead
- Back box
- Cable section
When to call an electrician Conditions that should end DIY troubleshooting. ⌄
- The socket is hot, burnt, buzzing, crackling or sparking.
- The fault remains after basic appliance checks.
- A breaker or RCD repeatedly trips.
- Water may have reached the socket or circuit.
- The accessory is loose, cracked or pulling away from the wall.
- Several sockets are affected or recent building work may have damaged a cable.
Frequently asked questions Common questions about socket faults. ⌄
Can a socket fail without tripping the breaker?
Yes. A local switch, contact or loose connection can fail while the protective device remains on.
Can I replace the socket myself?
Only if you are competent to isolate, prove dead, identify the circuit correctly and test the completed work.
Is a warm socket normal?
Slight warmth under a heavy load may occur, but noticeable heat, smell or discolouration is not normal.