Oven
Often a failed element leaking to earth.
Symptom: RCD or fuse trips when oven is on · Typical cost: £80–£190.
A cracked element leaks to earth.
The fix:Replace the element.
Worn insulation causes shorts.
The fix:Replace the wiring/terminal block.
£80–£190.
If you can see leaks, smell burning, or the appliance is tripping the electrics, stop using it and unplug it. For minor faults without those signs it is usually safe to leave it off until you can diagnose it. Always switch off and unplug the appliance before inspecting it. Never work on gas appliances or fixed electrical wiring yourself — call a Gas Safe registered engineer or a qualified electrician.