£78 fixed labour
Microwave not heating repair in London, Kent & Surrey
A microwave that runs but stays cold has usually lost its magnetron, diode or door interlock. These carry high-voltage capacitors, so this is a job for an engineer, not a DIY repair.
Covered across
1 year guarantee on parts and labour
Parts quoted before fitting
Common causes
- Failed magnetron
- Blown high-voltage diode or capacitor
- Door interlock or switch fault
- Burnt waveguide cover
- Control board not energising the circuit
How we fix it
- 1Test the high-voltage circuit safely with the unit discharged
- 2Inspect the door interlocks and waveguide
- 3Replace only the failed component
- 4Verify heating performance before we leave
Microwave not heating — questions
Can I repair a microwave myself?
No — the capacitor holds a lethal charge even when unplugged. Please leave it to an engineer.
Is it worth repairing?
For built-in and combination microwaves yes; for a cheap freestanding unit we will tell you honestly.
Do you fix sparking inside the cavity?
Yes, usually a burnt waveguide cover or damaged cavity coating, both replaceable parts.
Microwave not heating? We can look at it today.
Tell us the appliance and the fault — we'll confirm your slot and the fixed price before we arrive.