Microwave oven fault maintenance daquan
Troubleshooting of microwave oven-the microwave oven is not powered on.
1. The user's power socket is in poor contact.
2. The hook of the microwave oven door is broken.
3. Is the low-voltage fuse blown? 8A
( 1)? Sudden voltage rise, overload protection.
(2)? The monitoring switch cannot be turned on, and the interlock switch is not turned off.
(3)? Transformer damage (short circuit)
(4)? Damage (leakage) of high voltage capacitor
(5)? Magnetron is damaged.
(6)? Various components are short-circuited.
4. The door hook of the sliding door cannot press the door monitoring switch.
5. The thermal circuit breaker is damaged (rarely).
Troubleshooting of microwave oven-the light doesn't work
1, the light bulb is broken
2. The light bulb dropped.
Troubleshooting of microwave oven-the microwave oven works normally and the turntable doesn't turn.
1, the turntable motor is damaged (too much water or oil).
2. The threaded head of the turntable motor falls off.
3. The connector falls off or breaks.
Troubleshooting of microwave oven-the microwave oven will lose power after working for a few minutes.
1. The fan motor is damaged.
2. The fan plug falls off.
3. Poor contact of the fan plug.
5. The cooling air duct is blocked.
Troubleshooting of microwave oven-the start light of microwave oven is on, and the turntable fan rotates but does not generate heat.
1, high-voltage safety damage (moisture condensation or other parts damage).
2. The high-voltage diode is damaged (some are buzzing and the diode is very hot).
3. The main pole of the transformer is open, and the filament is open.
4. Magnetron is damaged (filament is open, magnetic steel is cracked, vacuum leaks, and some are buzzing).
5. The timer tube is damaged (sometimes it is good or bad, and the high fire is frequently started).
6. The transformer outlet is in poor contact with the magnetron.
7, transformer outlet and capacitor wiring poor contact.
8. The transformer has no voltage input of 220 volts.
? Troubleshooting of microwave oven-the microwave oven works normally but there is noise.
1, normal wind, sound of power conversion.
2, the fan shaft clearance is too large, shaking.
3. The transformer core is loose.
4. The relay is noisy.
5. The turntable motor is noisy.
6. The fan blade will shake before and after loosening.
Troubleshooting of microwave oven-leakage of microwave oven
1. The grounding wire of the user power supply is charged.
2. The power supply is out of phase (it should be left zero and right fire).
3. The barbecue tube is broken and the heating wire contacts the cavity.
4, motor, transformer insulation resistance is less than 65438+/-0 megohm.
Troubleshooting of microwave oven-microwave oven door won't open
1, the door hook is broken.
2. The door pillar is broken.
The door button is broken.
4. The door is deformed.
Troubleshooting of microwave oven trip
1. The capacity of user power supply air switch is too small or aging, and it is required to be at least 15A.
2. The internal components of microwave oven are short-circuited. (including microswitch, power cord, lamp holder, motor, etc.). )
Troubleshooting of microwave oven-the computer version does not show the rotation of the door panel.
The computer board is damaged.
2. The computer board has poor power contact.
Troubleshooting of microwave oven-the computer board shows that the turn signal of microwave oven door panel is on.
1, poor contact of microwave microswitch.
Troubleshooting of microwave oven-the computer board shows that the membrane switch button doesn't work.
1, membrane switch is damaged.
2. The membrane switch has poor contact with the computer board.
The computer board is damaged.
The above is the maintenance method of microwave oven fault. Only by figuring out the cause of each failure can we maintain it better. Of course, in order to avoid repairing the microwave oven, we usually need to take good care of it when using it. First of all, the microwave oven is best placed in a ventilated place, away from the magnetic field. Secondly, it is very necessary to keep a clean microwave environment. It is best to wipe the microwave oven regularly. Try not to heat some food that is easy to splash. Simple maintenance of microwave oven can definitely increase the life of microwave oven.
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