Did your microwave stop heating? Here are the causes and fixes

Microwave ovens are a common appliance in homes across the United States. Unfortunately, they can also be one of the most frustrating to use. Microwave ovens work by using microwaves to heat up food. However, over time, the microwaves will stop heating the food properly. This can cause the food to cook unevenly or not at all. If this happens, it can lead to food being burnt or undercooked.

Following are some of the causes of why your microwave oven can stop heating and how you can fix them.

Causes of a microwave oven not heating

Microwave ovens are fairly reliable devices, but they can sometimes fail to heat food properly. There are a few reasons why this might happen. Here are some of the most common causes:

  • A broken electrical connection in the microwave. This can often be fixed by replacing the wire or connector.
  • Insufficient power supply to the microwave. This can usually be resolved by upgrading the power cord or outlet.
  • Defective heating elements in the oven. These can usually be replaced without any difficulty but may require a bit of know-how on part of the homeowner.
  • The wrong type of food is being microwaved. For example, dense vegetables like potatoes may not cook properly in a microwave because they absorb energy and heat up too quickly, causing them to explode or burn inside the oven.

How to repair Microwave oven not heating

If your microwave oven isn’t heating up, there are a few things you can do to try and fix the problem. First, check to see if the power is turned on to the oven. If it’s not, turn it on and check to make sure the plug is fully inserted into the outlet.

Next, look for any obstructions in the microwaves radiation path. This could be something as simple as a piece of paper or a metal object in the way.

Lastly, make sure that the magnetron inside the oven is working properly by testing its power with an electrician’s meter.

If none of these solutions work, you might have to call a technician to come out and fix your oven.


In conclusion, there are a few reasons why your microwave might not be heating food. However, many of these problems are easy to fix. So, if you are having trouble with your microwave, don’t despair. Try some of the methods we suggested and you should be up and cooking in no time! and make sure to Always consult a professional if the problem persists.

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