Why does the microwave sparkle inside and what to do? DIY repair

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Not many peo­ple know what to do if the microwave sparks. But, as with oth­er equip­ment, prob­lems also occur peri­od­i­cal­ly with it, and sparks in the cham­ber are per­haps the most com­mon. If spark­ing becomes notice­able dur­ing oper­a­tion of the appli­ance, you need to turn it off imme­di­ate­ly, and then find out why the microwave is spark­ing. Inac­tion can lead to seri­ous dam­age.

Incorrect use of the device

The instruc­tions for any microwave oven, as a rule, con­tain infor­ma­tion about which dish­es are suit­able for use inside the device. Fail­ure to fol­low these rec­om­men­da­tions can also lead to the fact that the microwave sparks and cracks dur­ing oper­a­tion.

Microwave

Impor­tant! Do not use the appli­ance when it has been noticed that the microwave is shoot­ing or spark­ing. Fur­ther oper­a­tion can lead not only to the com­plete fail­ure of the equip­ment, but also to the expo­sure of those who come into con­tact with it.

Pro­hib­it­ed uten­sils include met­al uten­sils and plates or mugs with any metal­lic rim or pat­tern with gold or sil­ver flecks. Spark­ing may be short-lived, but its fre­quent rep­e­ti­tion can lead to fail­ure of the mag­netron and cost­ly repairs.

When choos­ing plas­tic and oth­er dish­es for the microwave, you need to be guid­ed by the signs on the prod­ucts. The drawn waves indi­cate that such dish­es will not harm the appli­ance and will not dete­ri­o­rate from expo­sure to microwaves. What kind of microwave dish­es can be used and how to under­stand the mark­ing: you can find the answer here.

If spark­ing occurs due to the use of incor­rect dish­es or the fact that cut­lery acci­den­tal­ly got into the cham­ber, then it is easy to elim­i­nate. You just need to stop the microwave and remove the dish­es. But if the microwave oven sparks even after all objects with signs of met­al are removed, then this is a sure sign that it has bro­ken.

Read also:

Mica plate needs to be replaced

The most com­mon rea­son that sparks appear inside the microwave is the burn­ing of the mica plate, which is the dif­fuser of microwaves. If the microwave oven is not prop­er­ly main­tained, grease and burnt food residues accu­mu­late on the plate. This leads to over­heat­ing of the plate and its destruc­tion. If the mica is not replaced in time, dam­age to the mag­netron may occur, and this is the main ele­ment of the device and costs almost the same as the microwave itself.

To under­stand whether the cause of the spark­ing is real­ly in the dif­fuser plate, you need to look at which side the sparks are from. If the sparks are only from the side of the mica and at the same time there is a smell of burn­ing in the cham­ber, then this indi­cates that the plate needs to be replaced. Using a microwave with a defec­tive plate is not safe for the appli­ance.

Replac­ing a mica plate is one of those types of repairs that you can do your­self. First you need to make sure that the mat­ter is in the microwave dif­fuser and check it for burnt places. Before installing a new plate, the cham­ber must be thor­ough­ly cleaned of grease.

Camera plate

You can buy a new mica plate at a hard­ware store or at the microwave man­u­fac­tur­er’s online store. The first option is like­ly to be cheap­er, but the size of the plate may not match the one that was installed and will have to be cut. To do this, the old mica is applied on top of the new one and the excess is cut off with a sharp knife, and all uneven edges are processed with sand­pa­per so as not to scratch the cam­era coat­ing dur­ing instal­la­tion. New mount­ing holes can be made with a punch­er.

More detailed instruc­tions on how to replace the mica plate your­self can be obtained from the video clip:

After installing the plate, the microwave needs to be checked to make sure that the sparks inside have dis­ap­peared. With such a check, it is impos­si­ble to turn on the oven with an emp­ty cham­ber.

Damage to the coating inside the chamber

Anoth­er com­mon rea­son for a microwave to crack­le and sparkle is dam­age to the inside of the appli­ance. The cham­ber where the food is cooked and warmed up is cov­ered with a spe­cial enam­el. Burnt food and scratch­es from dish­es even­tu­al­ly lead to var­i­ous dam­age to the walls.

Coating inside the chamber

To restore the coat­ing, only spe­cial enam­el is suit­able. Ordi­nary paint does not have the desired prop­er­ties. Of course, it is bet­ter to entrust this repair to spe­cial­ists. The pro­ce­dure is not so expen­sive, but you will have to tin­ker with find­ing cov­er­age. But if you have free time, then you can do every­thing your­self.

Before restor­ing the coat­ing, all con­t­a­m­i­nants must be removed from the walls of the cham­ber. In those places where the old enam­el departs, it must be removed. Blow out the dam­aged areas with the pur­chased prod­uct and leave for a while. Then check the func­tion­al­i­ty of the device. If no sparks appeared when turned on, then all manip­u­la­tions were car­ried out cor­rect­ly and gave a pos­i­tive result.

To pre­vent fat and food from accu­mu­lat­ing on the walls of the cham­ber, it is worth clean­ing reg­u­lar­ly. Grease and car­bon deposits are eas­i­er to remove if, before wash­ing the cham­ber, heat the microwave at low pow­er for 10–15 min­utes with water inside. Then wipe the walls of the cham­ber with a soft sponge moist­ened with a non-abra­sive deter­gent with a fat-split­ting effect.

Too bulky dish­es that are placed in the microwave can also cause dam­age to the enam­el. Even if the plate placed in the cham­ber does not touch the walls, then when the tray rotates, it can move out a lit­tle. With con­stant fric­tion of dish­es against the walls, thin­ning of the enam­el will occur, which will lead to deep dam­age.

Care­ful main­te­nance of kitchen appli­ances pro­longs the life of appli­ances for a long time, reduces the like­li­hood of expen­sive repairs. For a microwave oven, it is impor­tant to clean the cham­ber in time, and use only dish­es intend­ed for it.


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