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A microwave oven is present in almost every home. It greatly simplifies life, allowing you to heat up or even cook food in just a few minutes. But, like other household appliances, the microwave is subject to various malfunctions. Many users are faced with crackling and sparking when the oven is working. The reason why the microwave crackles may be the improper operation of the device or the failure of various structural elements.


Why does the microwave crackle


Crackling during microwave operation is a rather dangerous sign. This is an electrical device, so a malfunction is fraught with fire and other negative consequences. Including possible harm to the human body.


Important! If the microwave crackles after switching on, it should be immediately disconnected from the mains.


The microwave can emit not only a crack but also an unusual knock, rumble, or hum. These signs also indicate a malfunction. If there are noticeable sparks inside, accompanied by extraneous noise, the operation of the device must be stopped immediately until the malfunction is eliminated. As a rule, this phenomenon is caused by various internal problems. And the reason in most cases is incorrect operation.


Common reasons why a microwave can crackle and sparkle


It is possible to single out the 4 most frequent reasons leading to cod:


– Malfunctions of the device itself. Perhaps the mica plate has burned out or the coupler (a plastic element on which the plate rotates) has burned out.


– Damage to the enamel layer inside the camera.


– Non-compliance with operating rules. Do not use dishes that are not intended for the microwave oven, especially those made of metal. It is also prohibited to turn on an empty device.


– Overheating with minor loading. Microwave radiation is reflected from the camera body, which causes the space to overheat.


Often, the reason is the burning of the mica plate. This element is the most frequently used. It is designed to protect the magnetron.


For reference! A magnetron is an electrical device that creates microwaves, which are used to heat products.


The mica plate is a dielectric that protects the magnetron and other electrical components from the ingress of grease, steam, dirt, etc. Rays freely pass through it into the furnace chamber, but cannot get back. It is on the plate that most of the mud collects. Due to the fat, the part burns out. The reflected rays heat up the fat and destroy the plate. As a result, crackling and sparks are formed.


Burnout of the plate occurs simultaneously in several areas. To prevent the problem, you should regularly clean the microwave chamber. If this is not done, it may be necessary not only to replace the plate but also more expensive parts. If a spark gets into the magnetron, it will immediately fail.


A similar malfunction often occurs with the coupler. This is a plastic part located under the rotating plate. Many users encounter it only once – when installing the plate in the camera after purchasing the device. Dirt also accumulates on the coupler, which leads to overheating and melting of the plastic. A characteristic sign of malfunction is the formation of the smell of melting plastic.


If the protective enamel layer is damaged, cracks may also appear. The microwave body is made of metal, and special enamel is used for protection. It is subject to mechanical damage leading to the formation of defects. Microwave ovens use a special type of enamel that is resistant to microwaves and high temperatures. It reflects the rays, so it does not overheat and does not crack during use. If the coating is damaged, the rays fall on the metal, forming an electric arc, which causes sparks and crackling.


Whether you can find the breakdown on your own or at some stage of the search, calling a handyman is up to you. Not only that in the absence of experience disassembly and assembly of the microwave, it is also better to limit the external examination and search for superficial damage, and then call our master. Chula Vista Appliance Repair Company proudly offers efficient microwave repair services in and around San Diego County. Our team of experts is well-equipped and ready to handle all types of microwave repairs, no matter how complicated they are. We strive to provide excellent repairs using only high-quality replacement parts backed by a manufacturer’s warranty, so you can rely on a microwave repair technician to fix the problem and make sure your microwave will work properly for a long time.


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(619) 880-5508

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