Microwaves are a kitchen staple, but when they stop heating or make odd noises, panic sets in. Before you call a technician, try a few easy checks that often solve the problem. Most issues are low‑cost fixes you can do safely in under an hour.
Start by noting exactly what’s wrong. Does the turntable spin but nothing heat? Does the display stay blank? Is there a buzzing sound? Write down the symptom – it narrows down the likely cause and helps you decide what to test first.
Check the power source. Plug the microwave into a different outlet to rule out a faulty socket. Make sure the circuit breaker hasn’t tripped.
Inspect the door latch. A microwave won’t run if the door isn’t sealed correctly. Look for broken latches or debris that might keep the door from closing fully. Clean the latch area with a dry cloth.
Fuse replacement. A blown fuse is a frequent culprit when the unit won’t start. Unplug the microwave, remove the outer cover (usually a few screws), and locate the fuse – it looks like a tiny glass tube. Use a multimeter to test continuity; if it’s broken, replace it with a fuse of the same rating. This fix can cost under £10 and takes just a few minutes.
Turntable motor check. If the plate isn’t rotating, the motor may have seized. Disconnect power, remove the turntable, and spin the motor shaft by hand. If it feels stuck, it likely needs replacement.
Magnetron inspection. The magnetron generates the microwaves that heat food. If you hear a humming noise but nothing heats, the magnetron may be faulty. Testing it requires a multimeter; a reading of zero resistance means it’s dead. Replacing a magnetron is more expensive and may be better handled by a pro.
Cleaning the interior. Grease buildup can affect the waveguide cover, the thin piece that directs microwaves. Remove the cover (usually a small plastic piece) and wipe it clean with a damp cloth. Avoid using harsh chemicals.
After each fix, reassemble the microwave, plug it in, and test with a cup of water for 30 seconds. If the water heats, you’ve solved the issue.
If you’ve tried the above steps and the microwave still won’t heat, or if you suspect a problem with the high‑voltage capacitor or magnetron, it’s time to call an expert. These components store dangerous electric charges that can cause serious injury if mishandled.
Also, if the microwave is more than ten years old, the cost of parts and labor may outweigh the benefit of repair. In that case, discuss replacement options with a trusted local service.
Northampton Appliance Repairs Services offers fast, affordable fixes for most microwave problems. Their technicians are fully trained, and they guarantee their work, giving you peace of mind.
• Clean spills immediately – moisture can damage electronic parts.
• Avoid running the microwave empty; it can cause the magnetron to overheat.
• Use microwave‑safe containers; metal can spark and damage the interior.
• Schedule a professional check‑up every few years to catch wear before it fails.
Fixing a microwave at home is often easier than you think. With a bit of curiosity and the right safety steps, you can save money and get back to reheating leftovers in no time. If the job feels beyond your comfort level, trust a local pro to handle the risky parts while you enjoy a fully functional kitchen appliance again.
Your microwave acting up? This step-by-step DIY guide shows you how to fix common microwave problems at home—without calling in a pro.
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