Why is my microwave working but not heating anything?

If your microwave isn’t heating, first check it’s not because of a setting (timer, low power). Switch on/off and test again with water. If it’s still not heating, common issues are door frame switches, high-voltage diode, or the microwave’s magnetron. If you’re not qualified, check with a professional.

If you’ve determined you need to replace your magnetron, you have two options: buy a replacement and follow the simple replacement guide- or replace the microwave altogether. A new magnetron isn’t cheap- it could run you anywhere from $100-250- more often than not equal to or greater than the cost of a new microwave.

If your microwave is making a loud or unusual noise (buzzing, humming, scraping, static), there are a range of potential faults you’ll have to check for. The drive motor that provides the power to rotate the plate might be faulty. The magnetron might be defective, leading to an electrical humming or buzzing.

When your microwave turns on but does not heat up, it may mean the door switch is broken. The door switch signals other microwave components to supply power when closed, and to stop heating when open. The door switch can also be called an interlock switch.

A soft reset is simply turning off the microwave oven to cancel or erase the program you’ve input in the microwave. To do this, you will just simply press on the Off/Clear button. Pressing Off/Clear button and holding it for about 3 seconds will also resolve the Control Locked feature of the microwave.

It costs an average of about $150 to repair a microwave, with a range of about $50 to $400. Most homeowners will pay $100 to $200, including labor and parts, depending on the brand, model, and the broken part. This cost doesn’t include any discounts that service providers may offer to members.

Start by checking the wall plug to ensure the microwave is plugged into power. Next, check the door switch and the door latch assembly. The microwave won’t start if the appliance believes the door is open. Next, check the two fuses, the thermal fuse, and the ceramic fuse, to see if they need to be replaced.

Microwaves can stop responding due to software glitches or unintended microwave settings. Press the cancel/reset button to do a soft reset on your microwave. If necessary, perform a hard reset by unplugging your microwave for 30 minutes, then plug it back in.