Issues with the door switch, internal fuse, magnetron, diode, high-voltage capacitor, and electronic control board are common causes of microwave malfunctions, requiring repair or replacement by a technician.
Plate Not Turning
Probably the most common issue of any microwave is when the plate doesn't turn. The turning plate helps cook and reheat your food evenly, so it's a major headache when it's not working. Usually, the problem could be from something obstructing the spinning assembly.
With normal usage for an average family and good maintenance, a microwave often lasts for 7 to 8 years. If the microwave is used less frequently by a single person or a couple and is well-maintained, the lifespan can increase to up to 10 years.
The most common cause for a microwave oven not working at all is a blown main fuse.
If the cost of repairing a microwave comes close to or exceeds the price of a new one, it might make more financial sense to replace it. However, if the costs of repairing are relatively low and the microwave isn't too old, it could be worth repairing the microwave.
Common microwave problems that can be fixed include a faulty door switch, blown fuse, or malfunctioning turntable. Other issues include uneven heating due to a damaged magnetron or burnt-out diode. Check for stuck buttons or a broken fan.
As the best microwave overall, we chose the Panasonic Microwave Oven; it combines a 1,200-watt motor with a compact exterior. If you're looking to save money and space, the Commercial Chef Countertop Microwave is the best budget microwave: simple but effective, much like microwave cooking itself.
Take Your Microwave to an Electronics Store
Some electronics stores will buy your old microwave from you for the parts and recycle whatever can't be used. Some larger electronics stores and chains offer a waste drop-off box in certain locations if the microwave can't be salvaged or you no longer need it.
On average, microwaves last 7-8 years.
It may be a damaged power cord, a bad fuse, or a malfunctioning circuit board – all of which are issues with the microwave itself. This microwave failure may also be from a natural cause. Have there been any power surges or storms near you? That can cook the wiring in your appliance.
You can test if your microwave is heating properly by heating a cup of water in a microwave-safe dish for about 30 seconds. Carefully test the water to see if it has heated. If it isn't hot, repeat the process. If it still isn't hot after a few attempts, it is not heating properly.
One of the most common issues with a malfunctioning Magnetron is the lack of heating. If your microwave is running but not producing heat, it could be due to a faulty Magnetron, burned-out filament, or a malfunctioning high-voltage diode.
Some microwaves, particularly those from higher-end brands such as Wolf and Viking, tend to last longer, around 10 to 15 years or even more. The lifespan of these microwaves can be further enhanced by repairing them when issues arise.
Issues with the door switch, internal fuse, magnetron, diode, high-voltage capacitor, and electronic control board are common causes of microwave malfunctions, requiring repair or replacement by a technician.
Most microwave recipes require 1,000 watts of power for best results, so you may want to choose a microwave model with a higher wattage when shopping.
Older microwaves may not have the most updated safety features or may have weakened over time, making them potentially dangerous to use. A malfunctioning microwave can cause harm to individuals and harm to property.
Keep the microwave unplugged for 5-10 minutes. The waiting period allows the internal components of the microwave to reset, ensuring a clean slate when you plug the microwave back in and reprogram your desired settings. Check for any evidence of damage on the plug and outlet before plugging them back in.
These are safety red flags, and fixing them might not be worth the hassle — or the risk. Faulty Magnetron: The magnetron is the part that heats your food. If it goes bad, the cost to replace it can be almost as much as buying a new microwave.
Take it to an Electronic Retail Store
Broken microwaves still have some value in their working parts. Many electronic stores will take your old microwaves and electronics for that reason. They will usually recycle the rest for you. Some major retailers, including Best Buy, have electronic waste drop-off boxes on site.
If your microwave is heating food much slower than normal, or not at all, something is off. If you think your microwave's power is starting to wane, give it a test. Cook one cup of water on high power for two minutes. If it's not piping hot, it may be time to consider a new microwave.