5 Reasons Why Your Microwave Is Not Working: The Ultimate Fix Guide.

Your Microwave is one of the most important appliances in your kitchen. Microwaves are a convenient way to heat food, and they make cooking easier because you don’t have to stand over the stove or stovetop for hours.

In addition, microwaves can help save time by allowing you to reheat leftovers without having useful and convenient kitchen appliances in your home. But it can also be a real pain in the neck when it stops working. Luckily, there’s no reason to panic when this happens.

There are some simple things you can do to troubleshoot and repair before calling for help or buying a new appliance. This handy guide will teach you everything you need to know about how to fix a microwave. We’ll start with the most common problems and work our way down to less common issues.

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    Caution When fixing A Microwave

    High voltage used by Microwave ovens can cause injury or death

    Be sure to unplug the Microwave and discharge the capacitor before attempting to fix a microwave. There are extremely high voltages involved and capacitors that can stay charged for months after you unplug it.

    The capacitor in a Microwave oven is large enough to cause serious or even fatal injury. Be very careful if you open it up, especially if you are not used to working with Higher voltage.

    The Major Reasons Why Your Microwave May Not Be Working.

    Most of us use microwaves to heat food, but some of us are not aware that they can be dangerous. Even if you think your microwave is working perfectly, it may not be working as well as it should. Here are the top reasons why your microwave might stop working.

    Broken Main fuse

    The first thing you should do when your microwave stops working is to check the main fuse. The main fuse usually sits right on top of the power cord, but it can be hidden behind a cover or inside the wall cavity. There are two types of fuses that most microwaves use: A 10 amp fuse and a 15 amp fuse. The difference between the two is that the 10 amp fuse can handle about 3,000 watts of power while the 15 amp one can handle 5,000 watts. The main fuse usually looks like this:

    A blown main fuse will prevent your microwave from working. If you can’t find the fuse, it’s best to call a repair technician.

    Wires and fuses get dirty over time. The most common reason why your microwave stops working is because of a short in the main power wire or fuse.

    Use a Multimeter to check for continuity. If it tests negative, then it’s time to replace it.

    Defective door switch

    Another common problem is the door switch. If your microwave’s door doesn’t work, then you will need to replace it. The door switch allows the start of the heating process once the microwave door is closed. To check for this problem, also use a multimeter to check for continuity and replace if it is faulty.

    Defective magnetron 

    If your microwave is making a buzzing sound or if it’s not heating anything at all, then you may need to replace the magnetron inside of your microwave. 

    This part is located behind the glass panel of your microwave. If this part is broken, then it will cause the entire microwave to stop working because there won’t be any electricity flowing through it. This part is responsible for cooking food in your microwave. 

    If this part isn’t working, then you will need to replace it. The magnetron tube assembly consists of a long, thin metal plate with tiny tubes inside. The tubes are responsible for heating the food.

    If you have checked all of these things and your microwave still doesn’t work, then it’s time to call an electrician. They will be able to tell you if there is a problem with your microwave or what needs to be done to fix it.

    Blown Thermal Fuse, Cavity fuse or Thermoprotector

    A blown thermal fuse is the most common problem that people have with their microwaves. A thermal fuse is a small, round wire that sits inside your microwave. It melts when it overheats and allows electricity to flow through it again. If this fuse is broken or damaged, then you will need to replace it.

    A blown thermal fuse is very easy to identify because it will look melted and destroyed. If you do not know how to check for a blown thermal fuse, then you can simply unplug your microwave from the wall socket and see if the door opens up on its own. If it does, then you will need to replace the thermal fuse.

    Thermo protector – A thermostat is a small device that sits inside your microwave and regulates the temperature of your food. If this part fails, then it will cause all kinds of problems with your microwave because it won’t be able to regulate the temperature properly.

    Cavity Fuse – A cavity fuse is a small metal ring that sits inside your microwave and controls how much electricity flows through it. If this part fails, then you will need to replace it because if there is no current flowing through the fuses, then your microwave will not work.

    If you have a microwave that doesn’t seem to be working properly, then you must call an electrician as soon as possible. This is because if the problem isn’t fixed immediately, then there could be a lot of other problems that develop over time.

    Use a multimeter to test for continuity and replace the faulty parts.

    Defective Main Control board

    The last thing that should be checked is the Main Control board. This is located on the top of your microwave and controls all of the other parts inside of it. 

    If this part is broken, then it will cause the entire microwave to stop working because there won’t be any electricity flowing through it.

    You should inspect all the other parts to ensure that they are working properly before replacing this part.

     

    Safety tips when repairing a Microwave

    Now that we have established the reason why your microwave isn’t working, however, we will now go over some very important safety tips and precautions when fixing a microwave oven.

    Safety is the number one concern when repairing any electrical device. Make sure you read and understand all of these instructions before attempting any repair or maintenance on your microwave oven. If you don’t feel comfortable doing this repair yourself, then don’t! Contact a qualified technician to help you out.

    1. When working with electrical appliances, always turn off the power first. This will prevent you from being electrocuted or injured if something goes wrong.
    2. High voltage Capacitor in a microwave oven may retain a charge even after it has been unplugged.
    3. Be careful with magnetrons. Some magnetrons are sealed/insulated with Beryllium Oxide, which is extremely toxic.
    4. Always wear protective gloves when working with microwave.

    Microwave Repair Parts & Tools: 

    If you are going to fix your microwave on your own, you are going to need the following tools .

    1) A voltage tester: This is a tool that allows you to test the electrical circuits in your microwave. You will need this if you suspect that there is an electrical problem with your microwave.

    2) An ohmmeter: This is a device used to test the resistance of electrical circuits. It can be used to determine if there is a short circuit in your microwave or other appliances.

    3) A pair of needle-nose pliers: These are used for taking apart metal objects and other tight spaces.

    4) A screwdriver set: This is a must-have tool for any handyman. It will allow you to take apart various electronic devices, including microwaves.

    5) A lighted magnifying glass: This is used to inspect the interior of your microwave for signs of damage or wear and tear.

    6) A non-contact voltage tester: This is a device that allows you to test electrical circuits without having to touch them. It can be used to check the voltage levels in your microwave.

    7)A good pair of insulated Gloves: These are necessary for protecting your hands when working with a microwave.

     

    The Most Common Microwave Problems

    We’ve put together a list of common problems with microwaves and how to fix them yourself:

    1) The Microwave Is Not Turning On:

    This is probably the first thing that comes to mind when you hear that your microwave is not working. However, there are a few things you can do to figure out why it’s not heating up and what the problem might be.

    First, make sure that the power button is on. You should also check for any obstructions in the venting system or the fan. If you’re having trouble with your microwave in a garage or basement, make sure that the door is closed and locked so no one can accidentally walk into it.

    It’s also important to check the power cord for any signs of damage such as fraying, loose connections, or exposed wires. If the power cord is damaged, you may need to replace it.

    2) The Microwave Is Not Heating Up:

    Sometimes, a microwave will just stop heating up without any other problems. In this case, check for obvious signs of damage such as broken or loose parts that could be causing a short.

    If your microwave is not heating up, check the power cord for any signs of damage such as fraying or exposed wires.

    3) The Microwave Is Heating Up But There’s No Sound:

    Another common problem with microwaves is that they heat up but don’t make any noise. This is often caused by a short circuit, broken wires, or a damaged fan.

    First, check the power cord for any signs of damage such as fraying or exposed wires. If there are no obvious signs of damage and your microwave still doesn’t heat up, you may need to replace the power cord.

    If your microwave is heating up but there’s no sound, you may need to check for a short circuit.

    4) The Microwave Is Heating Up But There’s No Heat:

    Sometimes, microwaves will heat up but they don’t have any heat coming out of the vent. This is often caused by a broken heating element or a broken fan. First, check for any obvious signs of damage such as fraying or exposed wires. If there are no obvious signs of damage and your microwave still doesn’t heat up, you may need to replace the power cord. If your microwave is heating up but there’s no heat, you may need to check for a short circuit.

    5) The Microwave Is Not Heating At All:

    Another common problem with microwaves is that they won’t heat up at all. This can be caused by a broken heating element or a broken fan. 

    First, check for any obvious signs of damage such as fraying or exposed wires. If there are no obvious signs of damage and your microwave still doesn’t heat up, you may need to replace the power cord. If your microwave is not heating up at all, you may need to check for a short circuit.

    6) The Microwave Is Blowing Hot Air Out of the Vent:

    Another common problem with microwaves is that they are blowing hot air out of the vent. This can be caused by a broken heating element or a broken fan. 

    First, check for any obvious signs of damage such as fraying or exposed wires. If there are no obvious signs of damage and your microwave still doesn’t heat up, you may need to replace the power cord. If your microwave is blowing hot air out of the vent, you may need to check for a short circuit.

    7) The Microwave Is Blowing Cold Air Out of the Vent:

    Another common problem with microwaves is that they are blowing cold air out of the vent. This can be caused by a broken heating element or a broken fan. 

    First, check for any obvious signs of damage such as fraying or exposed wires. If there are no obvious signs of damage and your microwave still doesn’t heat up, you may need to replace the power cord. If your microwave is blowing cold air out of the vent, you may need to check for a short circuit.

    8) The Microwave Is Making No Sound:

    Another common problem with microwaves is that they are making no sound. This can be caused by a broken heating element or a broken fan. First, check for any obvious signs of damage such as fraying or exposed wires. If there are no obvious signs of damage and your microwave still doesn’t heat up, you may need to replace the power cord. 

    9) The Microwave Won’t Come On:

    Another common problem with microwaves is that they won’t come on. This can be caused by a broken heating element or a broken fan. First, check for any obvious signs of damage such as fraying or exposed wires. If there are no obvious signs of damage and your microwave still doesn’t heat up, you may need to replace the Fuse.

     

    Conclusion

    Microwave ovens are very common appliances in our homes. They are not only used for cooking food, but also for heating water or sterilizing items. Many people don’t know how to repair a microwave oven properly because they think that it is something too complicated and difficult to do. If you don’t know how to repair a microwave oven, it will be better if you just take it to the service center and let them do it for you.

    In this article, we have discussed why your microwave isn’t working properly and how to fix a microwave yourself.

    The next time you want to repair a microwave oven, just remember the things we have discussed in this article. Hope you find this useful!

    FAQs

    What do you do when your microwave stops working?

    When the microwave in a home stops working, there is a chance that it may need to be replaced. To fix the problem, one must be able to diagnose what exactly has caused the issue and how to fix it.

    How do I know if my microwave fuse is blown?

    To determine if your fuse is blown, test with a multimeter. if the charge is negative, the fuse is blown

    If the fuse does not work properly, this means that it has been damaged or burnt out. The best way to fix this problem is by replacing the fuse itself with another one

    Does a microwave have a reset button?

    Microwaves do not possess a reset button.

    How do I know if my microwave magnetron is bad?

    A microwave magnetron is a device that emits microwaves. If your microwave is operating below safe temperature levels, then you can determine that the magnetron is bad, as it would be causing the issue.

    Is it worth fixing a microwave?

    It is worth fixing a microwave because microwaves are very useful cooking tools.

    Can I fix my Microwave myself?

    If your Microwave has been damaged or needs to repair, then it would probably be best for you to call a professional for help. If you can take apart the Microwave without causing too much damage, then it may be possible for you to fix it yourself. However, you should be aware that it is a very dangerous job and you may end up damaging the microwave in the process.

    Is it cheaper to fix a microwave or replace it?

    In most cases, replacing a microwave is more expensive than repairing it. In some cases, particularly if the microwave is under warranty, buying a new one may be cheaper.

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