How to Fix Hole in Microwave Oven

There’s nothing quite like the disappointment of discovering a hole in your microwave oven. Not only does it mean you can’t use your range, but it also requires a costly repair.

We’ve all been there. You’re heating your food in the microwave oven, and suddenly you hear a loud POP and see sparks flying out from the appliance.

How to Fix Hole in Microwave Oven

If you’ve discovered a hole in your microwave oven, don’t panic! It’s an easy fix. Here are the steps on how to fix hole in microwave oven you need to take to patch up the spot and have your microwave oven working like new again.

Summary: If you have a hole in your microwave oven, it’s likely because the seal around the door has worn down or broken. To fix this, you’ll need to replace the seal by removing the old one and installing the new seal. You’ll also need to clean and inspect the interior of the oven for any other damage that may have caused the hole. Once all repairs are done, test your microwave oven to ensure it is working properly and safely.

What Makes a Hole in a Microwave Oven?

If you detect a hole in your microwave oven, there are several possible causes. These include:

1. Poorly Sealed Doors: 

If the door on your microwave isn’t adequately sealed, microwaves can leak out and cause interference. First, inspect the door and make sure there aren’t any gaps or cracks. If there are, apply a sealant to fix them.

2. Damaged Waveguide Cover: 

The waveguide cover is what directs microwaves into the cooking chamber. If it’s damaged, microwaves could escape, which could cause electrical damage to the oven. To fix this, you’ll need to replace the waveguide cover.

3. Loose or Damaged Door Seal: 

The door seal helps keep microwaves contained. If it’s loose or damaged, microwaves can leak out. Inspect the seal and check for gaps or cracks. Then, apply a sealant or replace the seal.

4. Improperly Installed Microwave: 

If your microwave isn’t installed correctly, it can cause many problems. For example, if it isn’t level, the door won’t close properly, and air can escape. This can cause your food not to cook evenly and can also cause damage to the microwave itself.

5. Broken Magnetron: 

A broken magnetron is a common cause of microwave oven failure. If your magnetron is burned out, it will need to be replaced. Magnetrons are not expensive but very delicate and must be handled with care.

If you have a hole in your microwave oven, there are several possible causes. The most common cause is a broken or damaged seal around the door. If the seal is damaged, it can allow air to enter the oven, which can cause a hole to form. Another possible cause is a faulty or damaged door latch. If the door latch is not working correctly, it can allow air to enter the oven, which can also cause a hole to form.

The Door Latch is Not Working Correctly

9 Steps on How to Fix Hole in Microwave Oven

If you find a hole in your microwave oven, don’t despair. There are several ways to fix this problem, most of which are relatively simple. With time and effort, your microwave oven will look and work like new again.

Step 1: Unplug the Microwave Oven From the Power Outlet

For safety, first, you need to unplug the microwave oven from the power outlet. After that, you can clear it directly from the wall or the back of the microwave. Then open the door to release any stored heat and steam.

Step 2: Use a Screwdriver to Take Off the Outer Cover

Screws usually hold the cover on. Use a Phillips screwdriver to remove the screws. If your microwave doesn’t have screws, it may have snaps that you can release with a putty knife or another flat object. You need to be careful not to damage the images.

Step 3: Inspect the Waveguide

The waveguide cover is a metal screen that covers the hole that delivers microwaves into the cooking chamber. It’s usually located above the turntable. First, inspect the waveguide cover for any holes or tears. This is very important because microwaves escape through these holes; they can cause interference patterns in the food, resulting in uneven cooking.

Step 4: Replace the Damaged Waveguide Cover

If the waveguide cover is damaged, you will need to replace it. You can order a replacement waveguide cover from the manufacturer of your microwave oven. Before returning, you must ensure that the new waveguide cover is the same size and shape as the old one.

Step 5: Reassemble the Microwave

Once you have replaced the waveguide cover, screw the outer cover back on or snap it into place. Then, test the microwave to make sure it’s working correctly. If you want to reassemble, do so in the reverse order you took it apart.

Step 6: Look for Any Loose Wires

If loose wires are inside the oven, they may be causing the hole in the microwave. If you need to replace the wire, you can buy a new wire at hardware stores. You must ensure your safety first before fixing any loosen wire. 

Loose Wires Are Inside the Oven

Step 7. Check the Door Seal

If the door seal is not tight or there are gaps, microwaves can escape and cause holes in the oven. Inspect the door seal and ensure it is clean and free of debris. You may need to replace the door seal if there are any gaps.

Step 8: Replace the Magnetron

If none of the other solutions work, you may need to replace the magnetron. This is a part of the oven that generates microwaves. If it is damaged, it can cause arcing and holes in the microwave. You can buy a new magnetron at most hardware stores. Follow the instructions in the owner’s manual to replace it.

Step 9: Put the Microwave Back Together

Once the repairs have been made, you can put the microwave back together. Be sure to screw the outer cover back on securely. And make sure all the electrical wiring is secure and in place before turning the microwave on.

Regular maintenance on your microwave will help it last longer and function better. If you have any other questions about fixing a microwave oven hole, please consult an appliance repair specialist in your area.

What Happens if a Microwave Leaks?

If you suspect your microwave leaks, unplug it immediately and contact a qualified repair person. Microwave ovens contain high-voltage, high-frequency electricity that can cause severe burns or other injuries if it escapes from the range. Otherwise, serious injury could occur.

If you can see sparks or a visible arc of electricity inside the oven, do not attempt to repair the microwave yourself. Seek professional help immediately…

Unplugging the appliance is necessary to avoid the risk of electrical shock. However, if there are no sparks or arcs of electricity, you may be able to troubleshoot and repair the problem yourself.

Unplugging the Appliance is Necessary

What Are the Tools Needed to Fix a Hole in Microwave Oven?

The tools you’ll need to fix a hole in your microwave oven depend on the type and size of the hole. For small holes, all you’ll need is a patch kit designed for microwaves. These kits usually come with a self-adhesive patch that’s easy to apply. For larger holes, you may need to use a piece of metal screening or a patch that’s held in place with metal tape.

Safety Instructions You Need to Keep in Mind Before Fixing Hole in Microwave Oven

  1. Do not attempt to fix the hole in your microwave oven if it is still under warranty. Doing so may void the contract, and you could be liable for damages.
  2. Unplug the microwave oven before beginning any repairs.
  3. Use only a non-metallic utensil, such as a wooden spoon, to avoid causing a spark.
  4. Do not use tape to repair the hole, as this could cause a fire.
  5. If the hole is more significant than a quarter, it is best to replace the microwave oven rather than attempt to fix it.
  6. If the microwave oven has a glass plate, do not attempt to remove it. This could cause the glass to break and injure you.
  7. Do not use the microwave oven if it leaks any fluid.
  8. If the hole in the oven is causing sparks, turn off the power to the range at the breaker box and do not attempt to repair it.
  9. If you smell any type of gas, evacuate the area immediately and do not attempt to fix the leak. Instead, call your local gas company for assistance.
  10. If you are unsure how to fix the hole in your microwave oven properly, or if the gap is more significant than a quarter, it is best to call a professional for assistance. Attempting to repair the range yourself could result in further damage or injury.
Hole in the Oven is Causing Sparks

Frequently Asked Questions

Can You Repair a Hole in the Microwave?

the best way to repair a hole in the microwave depends on the nature of the hole and how large it is. However, some tips that may help include using an oven mitt or other DIY toolkit to create a seal around the perimeter of the hole, spraying boiling water onto the area where the plastic meets metal, and then waiting until coolant seeps through.

Once cooled down, you can use clamps or suction cups to secure the pieces back together. Remember: always test your repairs by placing something small inside the Microwave before fixing anything!

What Happens if You Cut a Hole in a Microwave?

If you cut a hole in a microwave, currents of high voltage and microwaves will flow directly into your body. This can be incredibly dangerous and cause burns, injuries, or even death. If you are unsure whether the appliance is safe to use, it is best to refrain from using it until you have checked with an electrician or technician.

Is It Safe to Use a Broken Microwave?

the safety of using a broken microwave depends on a number of factors, including the age and make of the microwave, the condition of the power cord, and how often the microwave is used. Some general tips to follow when using a broken microwave include:

  1. Make sure that the power is off before attempting to use the microwave – This will reduce the risk of electric shock.
  2. Use caution when opening the door – It’s always best to use caution when opening any door or drawer in a machine with power still connected, as there is always a risk of something getting hurt.
  3. Check for hazards before using – Before using any appliance, make sure to check for any potential hazards, such as water or gas leaks. If there are any hazards present, do not use the appliance!
  4. Use common sense – Always use caution when using any machine, and be sure to follow all safety guidelines carefully. If you experience any problems while using a broken microwave, don’t hesitate to consult a professional

Can a Broken Microwave Leak Radiation?

A broken microwave may leak radiation, but it is not clear how much. This so-called “microwave danger” was first reported in 1998 by the Environmental Protection Agency (EPA), which said that broken microwaves produce high levels of energy and electromagnetic fields (EMFs) that could cause health effects.

Since then, there have been numerous studies conducted on the potential dangers of using microwaves, with some finding a link between EMF exposure and cancers such as leukemia and brain tumors, while others demonstrating no significant harm. So far, however, there is no evidence to suggest that a broken microwave can release harmful amounts of radiation.

Do I Fix the Inside of My Microwave the Paint is Peeling?

Most likely not! Peeling paint is usually the result of water damage, which can be from rain or snow melting. Water causes moisture to enter the wood and plastic components of your microwave and eventually causes the paint to peel.

In most cases, this problem can be fixed by a professional restoration contractor who will remove all of the damaged material and apply a new coat of paint that will last for years.


So, that’s how to fix hole in microwave oven. It might seem daunting, but it’s not that bad – and it’s worth doing yourself rather than paying for someone else to do it.

If you have any questions or run into any problems while trying this repair, leave a comment below, and I’ll do my best to help. And if you decide that the magnetron is too old and worn out, check out our post on how to replace a microwave oven magnetron – it’s not as hard as you might think!

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