Microwave Oven Troubleshooting

new microwave

Knowing the methods of microwave oven troubleshooting can save you hundreds of dollars in repair bills. Often, a problem with a microwave oven be easily diagnosed and solved. However, bigger problems may require the assistance of a kitchen small appliance service technician.

How to do your own Microwave Oven Troubleshooting

If your microwave oven is not working as it used to, or is not working at all, you can troubleshoot the problem yourself. Using a simple checklist, you can narrow down the problem with your microwave and determine the best way to repair it.

  1. Determine the problem: Does the microwave turn on? Does it heat? Figuring out the problem is the first step to solving it.
  2. Compare your microwave against the most common issues with microwave ovens: Regardless of the brand, microwaves all operate in the same basic way and they often suffer from the same common failures.
  3. Decide if you can repair the appliance yourself: If the problem with your microwave has a simple solution, you may want to repair it yourself. If the problem is more complicated, you may wish to hire a professional.
  4. Order replacement parts: Order any parts you will need for the repair
  5. Repair the microwave oven: Take care of any work that needs to be done to restore the unit to working order.

Common Problems with Microwave Ovens

Most microwaves suffer from common problems that cause them to breakdown or function poorly.

Microwave Turntable Does Not Rotate

Certain microwave models include a glass turntable tray that rotates the food for even cooking. The turntable spins by a series of plastic wheels located under the tray. If the turntable does not rotate completely or at all, the problem may be due to the wheels. Test the wheels themselves to see if food has become lodged inside of them. If there is no clear blockage, the problem could be due to the motor used to control the turntable. A service technician can test the motor for you.

Inside of the Microwave Oven Does Not Light Up

There is a small light located on the inside of the microwave oven that lights the unit when the door is opened. If the light in your microwave stopped working, try replacing the bulb. If the light still does not work, there could be a problem with the light assembly or timer switch. You can order a new light assembly and replace the whole unit yourself, or have a service technician test the assembly first before replacing it.

Microwave Will Not Turn on

If the microwave will not turn on make sure the appliance is plugged in securely to a working outlet. Often the problem is not with the microwave itself, but with the electrical outlet. Try plugging the microwave in to another outlet. If the appliance still does not turn on, test the fuses inside the microwave. There are two fuses in a microwave, a thermal fuse and an internal fuse, check them both. Next, test the latch on the door handle. If the latch has come loose, it will send a signal to the microwave that the door is still open preventing it from operating.

Microwave Does Not Heat

If the microwave is working but not heating there could be a problem with the circuit board. If you have knowledge of electric circuit boards, you can test the item yourself. Otherwise, you will need a professional technician to assist you.

How to Repair a Microwave Oven

After microwave oven troubleshooting it is likely that you will need to make repairs. Small repairs, such as replacing the light bulb or turntable, can easily be completed at home. Other repairs involving the electrical functions may require a service technician.

If you decide to repair your microwave yourself, be sure to use extreme caution. Unplug the device before starting any repair to reduce the chances of electric shock. Always wear goggles and glove to reduce any chance of injury. Consult the microwave oven user manual for useful tips on making repairs.