microwave making popping noise when off

A faulty diode typically makes a loud humming noise. I don't notice any of that any more. Replacements can be purchased for $15-20. Im having this issue with a 2 year old Whirlpool unit. Using metal or metal-trimmed cooking utensils in the microwave causes arcing in a microwave. Once located, discharge the capacitor. HOMESERVE, the HOMESERVE Design and HOMESERVE USA are trademarks of HomeServe PLC. If your Frigidaire microwave is making a popping sound, it is most likely because of metal. To determine if the stirrer motor is worn out, check to see if voltage is getting to the motor. Under normal circumstances, the magnetron emits a low hum. There shouldnt be continuity in both directions. Shirley Schofield. If theres none, its best to replace the turntable motor. If so, you might consider leaving your microwave unplugged when youre not using it to prevent it from making noises. ], How Do I Stop My Freezer from Humming? This May Also Interest You: How Much Does a Microwave Cost? Operating the microwave empty may also cause a popping to occur and can damage the interior. Dislodged food can also get stuck in the fan, causing it to work inefficiently and make a strange sound. What would be causing the motor arm to catch and clunk or whatever it's doing to make the noise? This happens for several reasons, but is most commonly due to magnetron oscillation (when the microwave is heating), the vent fan running, or both. You could not tell this by opening and closing the door only by applying a screw driver to the screw. Why Is My Microwave Making a Popping Noise? I had the same problem with my Whirlpool over stove microwave. It may be intermittent however, as it did occur once in the past and went away on its own. Follow these steps to diagnose and fix a faulty magnetron: Always exercise caution when accessing the magnetron. In some cases, cleaning the cooking fan eliminates this annoying sound. When you open up a microwave, you can usually tell immediately if the diode is defective because it will look cracked or blistered. I tightened the screws just inside the door because one was slightly loose. now everything is as it should be! There is a loose connection somewhere. Place the ohmmeter between the magnetrons two terminals. The opinions, beliefs and viewpoints expressed by the bloggers and other third party content providers do not neccessarily reflect the opinions, beliefs and viewpoints of HomeServe or its affiliate companies. On the other hand, a microwave is an electrical appliance with moving parts, which means its subjected to wear and tear that will likely result in a cacophony of hums and rattles. Thankfully, it usually doesn't require an . Since high voltage capacitors used in microwaves may retain a charge even after the microwave has been unplugged, we recommend that only experienced professionals access and replace internal components. JavaScript is disabled. Follow these steps to diagnose and fix a faulty turntable motor: The stirrer motor powers a metal blade that deflects microwave energy throughout the microwave. When I started cooking with my microwave (Whirlpool model), I heard a loud electric popping sound but it continued to run and cooked my food just fine. A high pitch or loud hum points to the magnetron or diode, while a rattling or buzzing sound from the rear of the microwave indicates the cooling fan is at fault. I dont understand how this worked, but it did. It converts alternating current to direct current to produce the high voltage needed to power the magnetron. And, this leaves us confused and asking, why is my microwave making popping noises?. Aug 4, 2022 by Keep in mind, the diode should only have continuity in one direction, so if the multimeter display shows no continuity, try reversing the diode so the black lead is in contact with the opposite end of the diode when touch the other end of the diode to the 9-volt terminal. If your microwave makes strange or loud noises when it's in standby mode, something could be wrong with your fan. It can be the sound of the Magnetron turning on and off. The control relay is cycling between the bake and broil elements. If a microwave is making static noise, the reasons can include a damaged magnetron, loose wiring, or frayed wiring. Under normal circumstances, the magnetron emits a low hum. In which case it is on the inside of the lid. Check that the stirrer blade has not become loose and is not damaged. @andreazalazar. Replace or fix faulty sockets. Any comments would be greatly appreciated, Dec 6, 2022 by The capacitor will have to be tested to determine if this is the cause of your problem. I will try to figure out how to disassemble the front control panel and locate that thermostat. Depending on the model, a healthy diode will read between 50,000 and 200,000 ohms. Food spills will also cause popping noises when they land on electrical components like the walls . This sounds like my problem. The relays are losing power after cycling on and off. Use a multimeter to test the magnetron for continuity. Same problem here. the hum is coming from the Magnetron. Figuring out the issue is just as easy as solving the problem. Make sure the microwave is unplugged from the power source. Although it's possible to test the components with a multimeter and replace them yourself, it's a dangerous task if you don't know what you're doing. Touch the red lead to the positive terminal on the battery. Although, if you are handy, you can use a multimeter to test the continuity of these components and replace the faulty parts yourself. Check the food debris at the bottom of the oven which can interfere with its operation and cause noise. Hold until the light flashes. Samsung SMH2117S Microwave started making a loud hum a few days ago, I unplugged it over night and left it, plugged it back in the next day and still a loud hum, the hum stops when you open the door. The oven control board has relays that turn on and off power. You can buy them online or in DIY stores. Usually, replacing the damaged socket or socket wires should solve the problem. Just an update as I was out of town for work the past month. For most microwave ovens, it can be accessed from the bottom panel without having to remove the casing. If using the metal cooking rack, make sure it is firmly in place and not upside down. If the mini-fridge struggles to cool it may need repairing or replacing. Ill discuss these common microwave issues in-depth below: A microwaves primary function is to heat and cook food, and its only natural that its parts will get hot during the process. You can fix your microwaves noises by checking the magnetron, power supply, fan, or diode and replacing or repairing these parts if needed. When I put some chicken mole in it a little while ago to heat up, it made a big *crack *sound, and then as it ran for two minutes, there was a series of smaller crackling sounds, sort of like crackling paper. Step 1: Turn off and unplug the microwave. Also, if you notice a burning smell, its likely the magnetron has gone bad. The cooling fan motor can also wear out and may need replacing. Hold for approximately 10 seconds or until the light flashes. s.prop4 = s.prop3; If your microwave is blowing your fuse you want to look at your door switches or inspect if something is grounding out in your high voltage circuit. Overload cut out. Watch your inbox for our simple home maintenance tips. To fix the issue, unplug the microwave, unscrew the back panel, inspect the wires for damage, and replace the magnetron. Also, you might want to test the motor using a multimeter for continuity. If the third one fails and remains closed, it creates an unintended circuit loop that causes hum, although not necessarily operation at full power. The need for a quiescent working and living environment cannot be overemphasized. Before you attempt to disassemble the microwave to reach the magnetron, diode, or any other component for testing or replacement, unplug the power cord. Now locate the high voltage capacitor. . If the arcing burned a hole through the cavity wall, the damage is non-repairable. Place one cup (250 mL) of water on the turntable in a microwave safe measuring cup; then restart microwave oven. Follow all your manufacturer safety precautions. En espaol. @johnlornea15848. You could see sparks or flashes of light neighbors near shelf supports and around the door frame. Car Making Whirring Noise When Driving: The Ultimate Guide! Home Appliance Technician. I tested the power relay on the main board and found it stuck on closed shorting the power to the transformer. Damper operating sound for convection . Owner's Manuals. If necessary, remove any components blocking access to the fan. Is there a way to test and find out so I don't order parts not needed ? From reading another thread concerning the popping sound it may be the magnetron. Use a multimeter to check for electrical current. Go. Remove the fan motor cover (most microwave fans are at the back). Gas Oven Making Popping Noises When Heating. Replace turntable. There is nothing flammable except the food that you insert. @edwardangel. Next, remove the diode and prepare the multimeter for continuity checks. The microwaves magnetron is responsible for producing the high-frequency electromagnetic waves that cook the food. It heats fine. Clean any grease that might have ended up on the bracket off. community. The high-voltage capacitor inside the microwave can store a lethal amount of electricity, even after the microwave has been disconnected from the power for months. You may describe the noise of your microwave as a popping noise, crackling noise, or snapping noise as you prepare food or after spilling food. Every microwave oven has a high-voltage circuit containing a capacitor, magnetron, and diode. The water valve. Now that you know whats best for you and your microwave, you should be able to make informed decisions. 2. When I powered it up the wingdings were vibrating within the transformer. The current assumption is that it the switch was still the culprit and replacing it should make a lasting repair. If the stirrer motor is damaged, replace it. Due to the high running voltage and the potential for electric shock, it is extremely dangerous to replace the electronic components in a microwave. If that doesn't work, the only way to stop your microwave from making noise is to find out which part is faulty and repair or replace it. Judy@AZJudy.com, Mine is exactly the same model as yours. Because of this, you might hear it making a low humming sound even after you are done using your microwave. All third party Also, if the food is fatty, as in ham, the oils will cause the heat to create a sizzling noise. Clicking sounds can be caused by a couple of things. Reguardless of what might be wrong with your motherboard, I really don't see how a clicking noise can be blamed on the motherboard. It is caused by the thermal expansion the metal chassis of the TV goes through during the warm-up phase. s.channel = "Service_Support"; Give the safety switches a test for continuity. 7 Cheapest Ways to Soundproof an Office Easily & Inexpensively! Bosch read more. Before doing so, its worth checking whether you have a warranty that covers the cost of faulty parts and a technicians services.