Microwave oven: all possible breakdowns and our advice to easily repair them: Femme Actuelle Le MAG

The microwave is a very practical device for quickly reheating a prepared dish. Simple to use, its maintenance is often neglected. And it can go wrong for your device.

And a broken microwave, that is not reassuring … So, how to react safely to a failure of this cooking appliance?

What should you do before trying to repair your microwave?

Reminder of safety instructions! Whatever the concern, NEVER intervene without following the safety instructions!

If you have to disassemble the microwave, we advise you to be very careful. The microwave is indeed a device which produces significant current discharges which can be fatal.

Never test and use a multimeter with the device plugged in; the tester may not withstand the voltage that is too high, whether at the magnetron, the transformer or the capacitor. Even when unplugged, the capacitor inside the device still produces high-intensity electric shocks.

We therefore advise you to let the device discharge at least one day before disassembling it. When dismantling, be sure to take insulated pliers and short-circuit the capacitor, when the device is obviously unplugged.

We also advise you to put on insulating gloves to work in complete safety.

Discover the 6 most common breakdowns and our advice on how to fix them yourself.

If your microwave has stopped working at all, the first thing to check is the fuse, which is usually located on the voltage inlet filter board. Test it using a multimeter, following the safety instructions. Its simple replacement is enough in many cases to solve the problem.

Microwave light does not work

If there is no more light in your microwave when you open it or when it is working, you are logically blaming the bulb which must be defective.

Probably, but that's not the only possible cause. Indeed, if after checking the bulb is operational you will have to check other elements of the microwave: the socket which may have an electrical contact fault, the safety of the door of your appliance which triggers the ignition of the microwave. light. For the latter, you will need a multimeter to determine if it needs to be replaced. Finally, it may be the electronic card that manages all the functions of your microwave (heating, resistance, light, etc.) that is faulty.

My microwave makes noise: what should I do?

A working microwave emits a noise of around 55 dB. This completely normal noise comes from the magnetron which produces the waves. On the other hand, an unusual sound such as a loud buzzing noise should alert you to an operating fault.

If the noise emitted by the magnetron becomes muffled and the food is no longer heated, the magnetron may be defective.

A squeaking or squealing will direct you to a failure of the chainring motor or more simply that the chainring spider no longer fulfills its role.

Does the noise occur when you have just turned off your device? This indicates a problem with the cooling fan.

Finally, a strange and thudded noise followed by the shutdown of the device, will direct you towards the high voltage diode or the capacitor which could be broken.

On the other hand, if you hear a big "POC" it is because you have put in a food that is not microwave safe like an egg and you have some cleaning to do !!

Can you fix a microwave that does not heat evenly?

Your microwave seems to be working well, but your dishes are not warmed well … Some are hot while the rest are still frozen.

This phenomenon can have several origins:

  • The dish you are using is not suitable for the microwave and absorbs some of the waves (a terracotta dish for example)
  • The platter does not turn correctly because it is incorrectly positioned or its spider is broken
  • The motor driving the platter gave up the soul
  • On some models of microwaves, the rotating antenna, also called a wave shaker, may fail.

What if the microwave tray no longer turns?

It’s annoying but easy enough to solve. Did you know that on some microwaves a button blocks the rotation of the tray in order to place a square dish? So this is the 1st check to do!

Then, of course, check the chainring motor which will need to be replaced if it turns out to be defective.

Finally, a quick look at the door security lock is in order because if it no longer serves its purpose, the microwave will simply not work!

The microwave makes sparks: is there a risk?

Other than putting metal in your device, the most likely reason for sparking is a neglected MICA plate. This small cardboard-type plate fixed in the microwave cavity lets the waves coming from the magnetron pass while protecting the latter from food projections.

Check it visually because if it is dirty, punctured or has black spots from burns, sparks may form inside the oven.

Finally, care must be taken to ensure that the microwave cavity does not show any scratches or deformations that could encourage the production of sparks. A trick is to hide the scratches using nail polish (preferably colorless).

In general, food debris thrown during cooking and not cleaned will represent as many roughness that may end up generating sparks.

My microwave is tripping my house: what can I do?

Several factors can explain why your appliance trips your electrical installation and you have to eliminate them in a precise order: power supply, plate motor which has been sprayed with a liquid, following an overflow of milk for example or during cleaning too pushed.

Other elements can be incriminated such as the capacitor or the diode, the door security and perhaps even the centerpiece of your device: the magnetron which is used to produce the waves.

In any case, never work on a microwave without having scrupulously observed the safety instructions! If in doubt, it is advisable to seek the help of a professional given the dangers of handling a microwave. Care and vigilance are required in repairing a microwave oven. The SOS accessory company cannot be held responsible in the event of an accident.

Thanks to the experts at SOS accessoires for their good advice and tips on how to repair your microwave yourself.

Read also :

⋙ Extractor hood: all possible breakdowns and our advice on how to easily repair them

⋙ 8 mistakes that everyone has made that damage the dishwasher

⋙ Oven repair: all you need to know

Leave a Reply