Microwaves are a staple of the modern UK kitchen, offering convenience for everything from defrosting to full meal preparation. While basic freestanding models ...
Repairing a microwave is not just about saving money; it is a sustainable choice that reduces electronic waste. However, due to the high-voltage components involved, these repairs must be handled by qualified professionals to ensure the appliance remains safe for domestic use.
What Does the Work Involve?
- Visual Inspection: Checking the door seals, hinges, and mesh for signs of wear or radiation leakage.
- Safety Isolation: Disconnecting the unit from the mains and safely discharging the high-voltage capacitor.
- Diagnostic Testing: Using a multimeter to test the magnetron, diode, transformer, and thermal fuses.
- Component Replacement: Swapping out faulty parts such as turntable motors, door microswitches, or control boards.
- Microwave Leakage Test: Using a calibrated meter to ensure no harmful radiation is escaping the unit after reassembly.
- Final Calibration: Verifying power output and timer accuracy before signing off the repair.
Typical Costs
The cost of microwave repair in the UK typically depends on whether the unit is freestanding or integrated, as built-in models require more labour to extract and reinstall. Prices below include VAT at 20%.
| Item | Low £ | High £ | Notes |
|---|---|---|---|
| Call-out & Diagnosis | £50 | £95 | Often deducted from the final repair bill. |
| Labour (Hourly Rate) | £50 | £85 | Most repairs are completed within one hour. |
| Replacement Magnetron | £60 | £180 | The "engine" of the microwave; varies by brand. |
| Control PCB | £80 | £250 | Expensive on premium brands like Miele or Neff. |
| Minor Parts (Fuses/Motors) | £15 | £45 | Common fixes for "not spinning" or "no power." |
| WEEE Disposal Fee | £15 | £30 | If the unit is deemed beyond economic repair. |
Factors affecting the price include the brand (premium German brands usually have higher part costs) and your location, with London and the South East seeing higher labour rates.
How Long Does It Take?
- Initial Diagnosis: 20–40 minutes to identify the fault and check for safety issues.
- Standard Repair: 45–90 minutes if parts are carried on the van (e.g., fuses, motors, or switches).
- Complex Repair: 1–2 hours for integrated units that require removal from kitchen cabinetry.
- Parts Lead Time: 2–5 working days if a specific control board or magnetron must be ordered from the manufacturer.
DIY or Professional?
Warning: Microwaves are one of the few household appliances that can be lethal even when unplugged. The internal capacitor stores a high-voltage charge that can cause a severe or fatal electric shock.
While a homeowner can safely replace a lightbulb or a glass turntable, all internal repairs must be left to a professional. Unlike a toaster or a kettle, the internal components of a microwave operate at several thousand volts. A professional engineer has the tools to safely discharge the unit and the calibrated equipment to test for radiation leaks—something a DIYer cannot do.
Choosing the Right Tradesperson
- Check Qualifications: Look for engineers with City & Guilds 2377 (PAT testing) or specific appliance repair diplomas.
- Insurance: Ensure they hold Public Liability insurance (minimum £1 million) to cover any damage to your kitchen.
- Specialism: Some engineers specialise in specific brands like Bosch, Samsung, or Panasonic; choose one familiar with your model.
- Ask about Warranties: A reputable repairer should offer a 3–12 month guarantee on both the part replaced and their labour.
- Ask about Leakage Tests: Confirm they will perform a microwave emissions test as part of the service.
UK Regulations
- BS EN 60335-2-25: The UK standard for the safety of household microwave ovens.
- WEEE Regulations: If your microwave is scrapped, it must be disposed of via an authorised treatment facility, not general waste.
- Part P (Building Regs): If an integrated microwave is being hardwired into a new circuit, the work must comply with Part P electrical safety standards.
Common Problems
- Arcing (Sparking): Often caused by a damaged waveguide cover (the small silvery card inside). This is a cheap and easy fix if caught early.
- Not Heating: Usually indicates a failed magnetron or high-voltage diode. This requires professional testing to determine which component has failed.
- Turntable Not Turning: Usually a failed motor or a broken plastic drive coupling. This is a common, mid-range repair.
- Dead Display: This could be a simple thermal fuse (tripped by overheating) or a failed main control board.
- Door Not Closing: Broken door latches or microswitches will prevent the unit from starting as a safety precaution.
Frequently Asked Questions
Is it worth repairing a microwave or should I buy new?
If your microwave cost under £80, a repair is rarely economic. However, for integrated models or high-end combination ovens (microwave/grill/convection) costing £300+, a repair is almost always the better financial and environmental choice.
Why is my microwave sparking inside?
Sparking (arcing) is usually caused by food splatters carbonising on the waveguide cover or the paint peeling inside the cavity. Stop using it immediately; if left, it will eventually destroy the magnetron, leading to a much more expensive repair.
Can a microwave be repaired if the glass door is cracked?
Yes, but the unit should not be used until the glass is replaced. The door contains a specific mesh designed to keep radiation inside; if this is compromised, the appliance is unsafe.
Do I need to take my microwave to a shop?
Most appliance engineers offer "in-home" repairs for microwaves, especially for integrated units. Freestanding units can sometimes be dropped off at a workshop to save on the call-out fee.
How long should a microwave last?
A good quality microwave should last between 7 and 10 years. Regular cleaning and ensuring the vents aren't blocked will significantly extend the lifespan of the magnetron and cooling fan.
This guide was written with AI assistance and is intended for general information only. Prices are estimates based on UK averages and may vary by region. Always get at least three quotes and consult a qualified professional before starting any work.
