Microwave makes noises - what does that mean?

If the microwave makes noises during operation, it is harmless in most cases - but not always. Find out which sounds can indicate certain causes of damage and which sounds you need to react to here.

types of noise

Crackling and crackling may occasionally occur in the microwave during operation. These are usually sounds that occur when food warms up. This is not avoidable, but not dangerous.

Noises from the device itself

If the device itself causes noises, such as a crackling, crackling, or humming, there is usually a defect (defective solder joints, cable damage). This is especially true if these sounds are heard even when switched off (not in operation, but plugged).

The earliest possible repair is indicated here, as in some cases such damage can result in a high risk of fire.

Noises with sparking or lightning

If there are sparks or lightning in the cooking chamber in addition to the noise, the appliance must be switched off immediately. Causes are common here:

  • Metal parts in the microwave
  • aluminum foil
  • metal-containing dishes (plates with gold rim) but also
  • Dirt that char and thereby generate sparks

The cause should be eliminated immediately. If the flashing continues after that, no matter what foods are placed in which dishes, the microwave is likely to have a defect. It should be repaired immediately.

Crackling noise due to unsuitable dishes

If dishes get warmed up in the microwave (this may not be) it is not suitable. This too can cause crackling or crackling noises. To test, either use another harness, or place the dishes in the microwave for 20 - 30 seconds (no longer!) And watch for heat. If it is warm, it is not suitable and must not be used, it could suddenly explode.

Tips & Tricks

Oil or frying fats must never be added to the microwave. Not only do they crackle, but they can easily start to burn as well!

Video Board: Fix Your Sparking Microwave Oven For Only