Why Is The Microwave Making Static Noise? (Solved)

Any type of noise coming from your microwave is going to make you wonder whether or not the appliance is breaking down.

This is often a possibility when you start hearing the microwave make static noise.

A microwave making static noise likely has a damaged magnetron tube or the plug is frayed. To fix the issue, unplug the microwave, remove the back panel, and access the magnetron. Check the wiring to see if it’s frayed. If not, the magnetron is damaged and has to be replaced.

In some cases, it will be the wiring that is damaged.

In those situations, you can attempt to replace the wiring and see if that helps kickstart the magnetron. For the most part, older microwaves do have this issue and it is to be expected.

Your only hope is to replace the magnetron and get the microwave working again.

This article will explain what to do when your microwave is making static noise.

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How To Fix Microwave Making Static Noise

1. Unplug The Microwave

If your microwave is making a crackling noise, this means there is something wrong with one of the internal components.

This is causing the component to misfire and that can lead to the microwave dying out over time.

As a result, you have to act fast.

The best approach is to unplug the microwave and further inspect what’s going on inside. This will allow you to pinpoint specific components in the microwave that are making the static noise.

If this noise is bothering you, it is a sign something is wrong with the appliance.

Always repair a microwave by taking out the plug. You should not touch any of the internal parts with the microwave still plugged in.

This is dangerous and unnecessary. It can also pose a fire risk.

microwave making static noise

2. Remove The Back Panel

Once the microwave is unplugged, you will now want to take a look at the internal components one by one.

You can start with the plug before unscrewing the microwave’s back panel.

Just inspect the plug and see if it is frayed. Sometimes, the noise comes because the main plug has started to fray and that is why the crackling sound becomes noticeable.

If not, you can continue with removing the back panel.

This will allow you to see the magnetron and all of the associated wires near this power source.

Make sure nothing is damaged and then start inspecting each wire one by one.

3. Check The Wires for Fraying Or Damage

With a microwave making static noise when off, you will have to check the internal wires too.

The wires can break down after a while due to how often this household appliance is put to the test.

You can end up with loose or damaged wires. This includes fraying.

If so, you will know that is the wire giving your trouble. You can take out that specific wire and replace it. If there is no fraying, you have to look at the main component (i.e. the magnetron).

In this case, it is likely the magnetron that is making the static noise in the first place.

microwave making static noise

4. Remove and Replace The Magnetron

For the magnetron, it’s not going to be easy to fix.

You are better off replacing the magnetron in the microwave once this type of noise becomes an issue.

The reason for replacing a magnetron has to do with how it ages. There is a shelf life for this part and there’s nothing you can do about it.

In many cases, you have to replace it to get the microwave to work again.

Any static noise from a microwave is going to make your mind wander to this part of the appliance. Find an exact match, take out the older part, and replace it by connecting the wires in the same place.

Once set into place, it will work like a charm.

Final Thoughts

These are the steps to follow with a microwave making static noise.

If a microwave is making static noise, the reasons can include a damaged magnetron, loose wiring, or frayed wiring. To fix the issue, unplug the microwave, unscrew the back panel, inspect the wires for damage, and replace the magnetron.

This will kickstart the microwave and get it back to how it was before the static noise became a thing.

You have to be patient when it comes to this process.

If you attempt to use it as-is, this is when the microwave dies out completely. Don’t take a chance and replace the magnetron as soon as you can.

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