Sears Home Services
appointment lookup logoAppointment Lookup
telephone logo646-440-2692
RepairHome WarrantyHome ImprovementClean & MaintainShop PartsResource Center
RepairHome WarrantyHome ImprovementClean & MaintainShop PartsResource Center
appointment lookup logoAppointment Lookup
  1. Repair

Microwave no power

Common reasons your microwave no power

The most common reasons your microwave has no power are a bad thermostat, malfunctioning electronic control board or a broken switch.

  • 52%

    52% of the time it's the
    Thermostat

  • 24%

    24% of the time it's the
    Electronic Control Board

  • 14%

    14% of the time it's the
    Switch

  • 10%

    10% of the time it's the
    Something else

  • Schedule your microwave repair now!

    We can help! Our service technicians have repaired over 4M microwaves. We can fix yours no matter where you bought it.

    Call (646) 440-2692 or schedule online now.

    Common microwave repair parts you may need

    Replacing one of these microwave parts may fix your problem.

    Thermostat Replacement

    When a microwave has a faulty thermostat, it can lead to various issues, primarily affecting the power to its components. Microwaves are equipped with multiple internal thermostats to ensure your safety in case components inside the microwave fail. For instance, many microwaves feature a magnetron thermostat, which activates if it senses excessive current or high temperatures near the magnetron in the microwave cavity. Another thermostat monitors the cooking cavity's temperature and activates if it becomes too high. If any of these thermostats activate, the microwave won't start, and its lights, fans, and display won't work. Because microwaves contain high-voltage transformers and capacitors that can hold dangerous electricity even when unplugged, it's crucial to have a Sears Home Services professional inspect the microwave and perform any necessary repairs.


    Electronic Control Board Replacement

    If a microwave's electronic control board malfunctions, it can result in various failures, such as a lack of power or heating, or it might prevent the microwave from turning off. This occurs because the board acts as the central control hub for the microwave, overseeing crucial components such as the magnetron (which heats food), cooling fans, lights, turn-table motor, cooking times, power level settings, and the display. When the electronic control board malfunctions, it can disrupt communication among many different components. A faulty board might also produce a chattering or clicking noise or emit a burning odor. Due to the potential impact on multiple components, it's advisable to have a Sears Home Services professional conduct diagnostic tests on the board to determine if replacement is necessary.

    Switch Replacement

    If a switch in a microwave is broken, it can lead to various issues, primarily affecting the power to the microwave's components. Microwaves are equipped with several internal thermal switches and interlock switches to ensure your safety if components inside the microwave fail. For instance, door interlock switches prevent the microwave from running when the door is open to prevent exposure to harmful radiation. Additionally, many microwaves feature a magnetron thermal switch that activates if it detects high current or temperature near the magnetron in the microwave cavity. Another thermal switch monitors the cooking cavity's temperature and activates if it becomes too high. If any of these switches fail, the microwave won't start, and its lights, fans, and display won't work. Because microwaves contain high-voltage transformers and capacitors that can hold dangerous electricity even when unplugged, it's essential to have a Sears Home Services professional inspect the microwave and perform any necessary repairs.

    What to expect when you experience a microwave no power issue

    How to fix the microwave no power problem

    Fixing most issues where there is no power typically requires replacing the thermostat, electronic control board, or switch. However, because there are numerous potential causes, conducting a thorough diagnosis is crucial for resolving the problem. An accurate diagnosis is essential for understanding the extent of the repair needed.

    Sears Home Services advice for a microwave that has no power

    When the microwave is experiencing a lack of power, there could be various reasons behind it. To prevent unnecessary replacement of parts, we suggest having a Sears Home Services professional conduct diagnostic tests to pinpoint the root cause of the issue. Our technicians have extensive experience in diagnosing all types of microwave failures.

    What to watch for with a microwave no power diagnosis

    Figuring out issues with modern appliances without the right knowledge and training can be tough. If you don't use proper diagnostic techniques, trying to fix your microwave problem might mean just guessing and changing parts. Appliances, especially those made in the last 10 years, have become really advanced, with lots of electronic parts that are tricky to test. Doing your own repairs on the latest appliance models is getting tougher.

    What our customers say about us

    With more than 1.3 Million 5 Star Reviews, you don't have to take our word for it

    Michael C offered an excellent service

    5 stars!!! Michael was quick and knowledgeable! Very accommodating and professional


    Andreina G, Naples, FL

    microwave

    Mark really went over the microwave trying to fix it, this was his second time here for the same problem. August till ? till we get it replaced. we appreciate him for his knowledge of his job. thank you Mark


    H M, Cadiz, OH

    Customer

    Mr. David is very polite and intelligent gentlemen. He came to replace a part on my microwave and he checked the microwave to make sure it was working properly. Mr. David gave me a courtesy call that he will be arriving in 15mins. He arrived on time for the appointment and took care of his job duties. Thanks Mr. David for all the hard work you do at Sears. Keep up all the good work.


    Pamela W, Baltimore, MD

    Repair Microwave Resources

    Homeowner having a microwave malfunction.

    Discover the top causes of microwave malfunctions in 2024 with Sears Home Services.

    7 min readApr. 05Microwave
    Understanding the lifespan of your microwave image

    Several factors can impact how long a microwave lasts.

    7 min readMar. 08Microwave
    5 Microwave Cleaning Tips: Achieve a Spotless Microwave Like a Pro image

    Discover the top 5 microwave cleaning tips to ensure your appliance stays clean and odor-free. Trust Sears Home Services for expert advice.

    4 min readMay. 23Microwave
    Is a Microwave Safe? – A Comprehensive Guide to Microwave Safety image

    Discover the answer to the question, 'Is a microwave safe?' with Sears Home Services. Learn about microwave safety and find the right appliances for your home.

    4 min readMay. 21Microwave

    Common microwave symptoms to look out for

    • Microwave burning smell
    • Microwave display not working
    • Microwave door not closing
    • Microwave fan not spinning
    • Microwave light not working
    • Microwave no heat
    • Microwave no sound
    • Microwave noisy
    • Microwave not heating
    • Microwave not spinning
    • Microwave not starting
    • Microwave not turning on
    • Microwave not working
    • Microwave stopped working
    • Microwave will not heat up
    • Microwave won't turn off