How to fix the microwave without heat
I. How can we fix the microwave without heat
1. Microwave furnaces need to be unheated before the shell of the microwave is removed and to see if there are signs of a bursting of the internal fuse, if we need to replace a new fuse before we can restore the microwave to its original state of operation。
However, if the high voltage capacitors in the microwave were damaged, they would need to be replaced, and, in general, it would have been more effective to have specialized technicians to assist with the maintenance and treatment of the microwaves after their failure。
Attention to the use of microwave stoves
1. The use of microwave ovens requires the selection of suitable packagings, which are more suitable for microwave furnaces, including ceramics, glass products and plastics, and are not suitable for microwave packagings, even if they are heated in the microwave。
It is important to focus on this aspect for new players using microwaves, and it is also important to note that microwaves should not be too close in the course of their work, as they may have some radiation。
1. Microwave ovens are still more functional, and the first time they are used is when a full-scale cleaning of the microwave is required, and the stoves of the microwave are adjusted to make delicious foods by using microwaves to bake potatoes, bake food, etc., in addition to heating food。
2. Many people will also use microwave high-temperature heating to disinfect towels, which is also a small hidden function of microwaves, which you can try to operate。
B. What are the reasons for not heating the microwave
Due to the improper operation of the cutter on the magnetic tube, the machine will not be able to heat up as scheduled, usually due to the poor performance of the heat knife. In repairing the failure, it was necessary to consider whether cooling fans were working properly. If the fans do not work, they cannot distribute heat, which will lead to an increase in temperature and thermal cutting of the device and the power of the magnetic tube。
When measured using a universal meter, electrical resistance abnormalities were observed in the motor circle. It is proposed to replace the new electrical motor and confirm that the wheeling is normal. If this occurs, the microwave is in a damp environment for a long time and is not used frequently, which can lead to the coil of the rotor, thereby damaging the power。
(2) how to maintain extended reading in microwave stoves without heat
Check the microwave power source for normality, open the shell of the microwave, check whether the fuse inside the machine has broken or, if not, may be due to secondary circuit failure of the transformer。
Check if high voltage diodes and magnetic tubes are normal and if so, check the high voltage capacitors, and if short circuits occur, the fuse will burn when the machine opens. High voltage capacitors of the same type are proposed for replacement。
High pressure capacitors, high pressure diodes or magnetic tubes are investigated on a case-by-case basis and replaced with replacement methods. Once the diode is replaced, the fuse will not burn and the heating will return to normal. This means that high-pressure diodes are malfunctioning, and it is usually not possible to detect this type of failure with an ordinary universal meter。
C. Hello, my microwave light is on, but it's not hot
The microwave light is lit and operated without heat as a result of the failure of the microwave magnetic tube。
The solution is that, in the event of a failure of the magnetic tube of the microwave, the condition of the microwave is resolved by contacting the maintenance staff in a timely manner to repair or replace the magnetic tube。
The heating principle of the microwave oven: in essence, it refers to a process of friction of polar molecules within the object, with the effect of an external mutation magnetic field, from electromagnetic energy to thermal energy. Microwave heating is based mainly on electromagnetic fields, where the cavity of the microwave is metal and metal is capable of reflecting electromagnetic waves, so microwaves used for heating foods are “locked” into microwaves。
(3) how to maintain extended readings when the microwave is not hot:
The use of microwave stoves is described below:
It is forbidden to heat the meat up to semi-cooked before heating it with a microwave oven: because bacteria still grow in semi-cooked foods, and for the second time with microwave heating, it is impossible to kill all bacteria because of the short period of time, and bacteria breed, thus endangering human health. Frozen meat foods must be unfrozen in microwaves before heating them into ready-to-eat foods。
The meat is frozen again, unfrozen by microwaves: because the meat has effectively been heated up at a low temperature on the outside of the microwave, bacteria can reproduce at this temperature, and although further freezing can stop it, it cannot kill the living bacteria. Therefore, meat which has been unfrozen by microwaves must be heated to full maturity if placed in the freezer。
D. What is the reason why the microwave is moving normally without heat
Microwave furnaces are normally rotated but are not hot for the following reasons:
1. The high-pressure tube is burned, at which point the emergency management service will be able to remove the short-circuits directly, provided that the new tube is replaced at a later stage。
2. High pressure diode short circuits, at which point new high pressure diodes will have to be replaced and the sound of microwave work in the event of damage to the high pressure diodes will be found relatively low。
3. The heating tube (magnetic control tube) of the microwave is damaged, and the replacement of the new magnetic tube is sufficient。
(iv) how to maintain extended readings when microwaves are not hot:
Attention to microwave use:
1. The antiheating time is too long and the microwaves use high-frequency heating, which is very rapid, and it causes the food to dry, harden and even to produce toxins. Therefore, when used, the time should be adjusted to the type of food。
2. Warms to heat ordinary plastic containers, plastic bags, etc. In microwaves, common plastic containers, plastic bags, etc., are intolerant to high temperatures and can easily transform. In addition, it could release toxic substances at high temperatures and endanger health. High-temperature-resistant microwave containers should be selected as far as possible。
3. Warm-heated fried foods, which can be splattered by high temperatures, can lead to open fires and fires. If it causes a fire in the furnace, please do not open the door immediately. The power should be turned off before the fire is extinguished。
E. What is the reason for the lack of heat in the microwave
Unheated microwave ovens may cause the following problems: when the low voltage used is not sufficient for the normal use of 2. Microwaves by microwave high voltage transformers to damage 3. 3. Microwaves have been damaged by 4. Poor contact with the diodes resulting in non-heating problems in the use of microwaves, the correct solution can be examined against these problems。
What's with the microwave
“1. The reason for the wire is that there are short circuits or the fuses are burned. 2. The use of microwaves is long and the probability of damage to the diodes is high, and if the microwaves are not hot after several years, it is essentially a problem of short-circuit diodes. 3. There are problems with high voltage capacitors in microwaves, or damage to voltage units, which can cause the microwave to lose heat. "
G. Microwave ovens are functional, but not hot
Maintenance methods:
First, the microwave power supply is normal. The shell of the microwave was opened, and the internal fuse was found to have broken, a 10-a fuse line was replaced, the engine was turned on and the fuse was broken. The transformer secondary connects to the high voltage capacitors by plug-in, replaced by a 10a fuse, and is operating normally. This indicates that the failure occurred in the transformer's secondary circuit and that the high-pressure diode tubes and magnetic controls were detected. High voltage capacitors were tested and found short circuits to the casings (places to connect), resulting in the immediate ignition of the fuse. Replacement of the same type of high voltage capacitors, troubleshooting。
2. The method of repair of the malfunction is generally consistent with the previous example. However, whether high voltage capacitors, or high pressure diodes, magnetic tubes, need to be examined on a case-by-case basis and the results do not show any problems. Replacements are replaced on a case-by-case basis, and when the diode is replaced, the re-opening is safe and heating is normal. This suggests that high-pressure diodes are not detectable and can only be randomly measured by measuring the high-pressure diodes using a common universal gauge。
3. It is assessed that it was caused by thermal cutter error on the magnetic tube. When the temperature of the cavity rises to 145 °c, the heat cutter moves to cut the power of the magnetic tube; when the temperature drops to 110 °c, the heat cutter closes again, and the magnetic pipe is electrocuted to heat the microwave. The machine worked for only a few minutes and the food was not ready and the temperature of the cavity was not above 145°c, so it was suspected that the heat cutter was not working well and that it was acting wrongly. The replacement of the new product resulted in the breakdown. In repairing such failures, consideration should also be given to whether cooling fans are working and, if the fans do not move and the heat is not drained out, they can also cause heat cutters to work and cut the power of the magnetic tube。
4. Take out the glass wheel in the cavity, the wheel frame, etc., and turn the microwave oven over to the bottom, remove the middle sheet and then remove the switchboard. The power plugs of the electric power plant were inspected with 220 v voltage, indicating that the power plant itself had malfunctions. Based on a universal meter, the electrical circuits were found to have radiums and open the road, with normal resistance generally ranging from 10 to 20 k. New power is replaced and the wheeling is normal. This is the case where the failure of the rotor's coil is caused by the failure of the rotor's wiring due to the fact that the microwave is particularly damp and the microwave is not used for long periods of time because the user places it in the kitchen. Users are reminded of the location of the microwave。
5. First, check whether the food is overstretched in the cavity, whether the power distribution switch is in low-fired position and whether the power voltage is low. When the above conditions are ensured, it is possible to check that the magnetic tube is ageing and can be used to touch the tube by hand, which, if it feels hot, is usually ageing. In addition, the magnetic steel on the pipe is broken. The machine is used in the kitchen after the hotel and is particularly damp in the environment and used on a long-term and frequent basis, resulting in rusty magnetic tube plugs and increased exposure to electrical resistance, while the incoming power voltage is low and the heating is too slow. Heat is normal after rust removal and replacement of connections。
6. The opening of the shell removes the transformer's secondary high voltage capacitors from the plug and replaces them with a 10a fuse, which does not burn the fuses when they are on, which means that the failure is in the high voltage circuit. The inspection found that the magnetic tube fuse shorted its shell itself, replaced the same model's magnetic tube, and the malfunction was eliminated。
H. Microwave ovens functioning without heat, how to maintain them
Maintenance methods:
The pending microwaves will be flattened on the desktop, half a cup of water will be placed in the microwaves and the door closed and electrically tested。
Following the above-mentioned operations, it is shown that the operation of the machine without heat failure is a high pressure insurance of 5000v0. 75a, resulting in the non-functioning of the subsequent high pressure elements, resulting in the inability of the magnetic tube to generate microwave heat. Up to this point, the maintenance of the microwaves was fully completed。
I. Maintenance of the microwave oven without heat
The microwave heating system, which consists mainly of high-voltage transformers, high-pressure diodes, high-voltage capacitors, wave panels, magnetic control tubes, etc., works on the principle that the microwave must have more than 220v currents, and our microwaves can better control the heating of food through a diode heating, making our lives much easier。
How's the grace microwave
The griss microwave is a pole in the microwave industry, and of the many microwave brands, grant is the most professional; of the relatively beautiful, hale and mitsubishi brands, grant is the first to develop a microwave and is technically mature. The gramsh microwave has been at the top of domestic microwave production and sales for many years。
The cause of the lack of heat in the grace microwave
1. Road pressure is too high to cause poor exposure or uneven heating
Two, there's a shortage of batteries in the griss microwave, which keeps the griss microwave warm
3. Aging or damage to control heating pipes due to the prolonged use of the grants microwave oven
How do you fix the griss microwave without heat
1. Adjustment of voltage meters。
Replacing new batteries or charging batteries。
3. Seek maintenance personnel to replace or repair damaged components。
