Electronic mosquito shooting (referred to as "electric mosquito shot") has become a small home appliance product that has good effects, mosquito extinguishing (flies, moths, etc.), no chemical pollution, safety and health, etc.However, the manufacturer does not provide a line diagram, which brings some difficulties to repair.Let ’s take a look at the common fault analysis and maintenance methods of electronic mosquito extinguishing.
Common faults of electric mosquitoes
1. Power switch
The power switch of electric mosquitoes is commonly used in the 6X6MM touch micro -key switch, which works under 120-20mA.Due to frequent operations to break the power, it is easier to damage.There are two types of damage:
(1) Poor oxidation of the contacts, the indicator light is not bright, and the electric mosquito is not working.
(2) The reed is fatigue, the contacts are sticking to death, the indicator lights are often on. As soon as the battery is installed, the electric mosquito is shot.The small switch is small in size, and it is troublesome to repair. Generally, new ones are replaced.
2. Breath transformer
Most of the damage of the voltage transformer is mostly secondary L3 turn insulation breakdown. It does not show that the "squeak" audio sound of T at the moment of power is not heard. There is no spark when touching the metal net.Use a multimeter RXL gear to measure the normal resistance value of both ends of the L3 at about 80Ω. If the circuit is broken or lower than the normal resistance value, it is considered damage.Another way to check is to apply the copper foil with the secondary engraved knife at the secondary of the transformer, and use a multimeter to communicate with the L3 ends.The number of normal AC voltage read is about 230V, and if there is no voltage, it is considered damage.
Welded T pin T, removed the transformer, pulled out the black magnetic heart, and lifted the external insulation.Remove the second -level lacquer bag and record the number of turns, and then use the φ0.08 ～ φ0.12mmqz high -strength paint cable.The lacquer cable can be dismantled on the bad small hanging fan or a bad small power power transformer.
3. oscillating tube
The secondary winding of the transformer T L3 is normal for 80Ω. If there is no 230V voltage at both ends of the L3, the fault is mostly damaged by the oscillating tube VT.Welding the oscillating tube, use a multimeter to detect and judge the good or bad.Replace it with the original model S8050, or use the NPN triode such as D467, D468, 9013.
4. Double pressure rectifier element
Double -voltage rectifier component capacitance C1 ～ C5, diode VDL ～ VD5 any component breaks through short -circuit or open roads, which will cause insufficient high voltage or high pressure.The main reason is that the component is insufficient pressure to resist or the electrical performance is poor.The universal table is required to be detected by only.It is usually more common with C1 or VDL.After the capacitor is damaged, replace it with 333J/630V polyester electrical container: After the diode is damaged, replace it with LN4007 silicon rectifier.
5. Battery box and battery
Most of the failure of the battery box is the battery leakage, causing the positive copper sheet or the negative spring to rust and oxidize, and poor contact. As a result, the electric mosquito is not working. It can be completely scraped off the corrosion with a knife.It is advisable to remove the battery without using electric mosquitoes for a long time, which is the best way to prevent the electrode rust and oxidize.
The battery consumes long -term power consumption. If the battery voltage per beat is less than 1V (the indicator light LED is darker), it will cause insufficient high voltage, poor mosquito extinguishing effect, and replace the new battery.
6. High -pressure metal net
For a long time or collision, the high -pressure metal mesh steel wire deformation and loosening may cause instant short circuit and spark.The user thought that the mosquito was hit, and he did not know that it had failed.If the short circuit of contact will cause damage to rectifier elements and transformers, it is necessary to check and maintain it frequently, and find that the deformed steel wire needs to be plastic.
7. The indicator light VDL is not bright
In the case of ensuring that the battery G power supply is normal, the faulty multi -button switch switch SB internal contact is poor.The SB is 6mm × 6mm vertical micro -touch switch. It frequently switches under the current conditions of 120mA working current, which is very easy to cause internal contact oxidation to open the road.
8. VD1 is bright, but no high pressure generates
At this time, the audio "squeak ..." sounded by the transformer T at the moment of power, indicating that the oscillating circuit does not work.The cause of the fault is mostly damaged by VT, and the new tube of 2N5609 or D467 can be eliminated to eliminate the fault.If there is no such tube at hand, it can also be replaced by 8050 and 9013 NPN triode, which is good.If the VT is not damaged, and it is obviously hot after power is powered, it means that the transformer T internal coil (especially high -voltage coil L3) is penetrated, and the same specifications of lacquer cables must be used. Generally, this failure is rare.
9. Insufficient high pressure
Most of the reasons are that the capacitor roads or the capacity of C1 to C3 becomes smaller, or one of the diode VD2 ~ VD4 is damaged, and new ones must be detected and replaced.As long as you replace the new battery, the failure can be eliminated.Electric mosquito shoots are the principle of inverter. DC power is turned into AC electricity, and then voltage is performed to generate more than 1,000 volt of DC voltage and use high voltage to use high voltage to shock mosquitoes.
Electric mosquito shoot repair repair process
1. Use a multimeter DC voltage gear to measure the two ends of the battery. The normal value should be about 3 volts. The battery is replaced below the normal value.Check whether the battery clip is rusty. If there is rust, wipe it with sand cloth.
2. Check whether the micro -switch is well exposed. You can use the multimeter to measure the interruption to determine whether it is good.If you have a good contact, the light -emitting diode will be lit.Otherwise, check the emitting diode.
3. Check the DC resistance of the voltage voltage transformer. The two groups are 0 euros and one group is about 150 euros. This group measures under power -powered. The AC voltage is about 350 volts.
4. Check the oscillating tube.There are two models of the tube: S8050, 5609.Pay attention to the different distribution of the tube. The collector (C) of the power check -in inspection (C) is 0 il, the base (B) is 3.4 volts, the emission pole (E) is 2.8 volts, and the difference between B and E is 0.6 ——0.8 伏.
5. Check the voltage capacitance.Use a multimeter × 1 to measure the two ends of the capacitor at the road. The pointer does not bias at zero point, which is good.If you break through, the pointer will be biased towards zero.After the capacitor penetrates, the electric mosquito will squeak.
6. Check the voltage diode.Use a multimeter × 10 gear to measure the two ends of the diode on the road, and the front and reverse resistance are normal.If you break through, the pointer will be biased towards zero.
7. Check the network shooting.It is normal to use a multimeter DC voltage 2500 volt at the road to measure the network. It is normal for the DC voltage to be more than 1,000 volt.If it is less than 700 volts, the capacitance will be penetrated.Pay attention to safety during measurement to prevent electric shocks.
8. If there is no voltage of the measuring mesh, there is no AC voltage, that is, there is a short -circuit failure of the network.After power off, use a universal meter × 10K gear to measure the two ends of the network, and the DC resistance is about 300K.
9. If the electric mosquito shoots are so bad that it cannot be repaired, it is only a new one. After all, the electric mosquito is not very expensive, but it is also necessary for summer and autumn.
Precautions for use of electric mosquitoes
How to use electric mosquitoes
1. Mosquito shot charging: Mosquito shoots are equipped with 4V -charged high -capacity lead -acid battery.8-15 hours of charging each time, you can recharge 400 times repeatedly, environmental protection and energy saving.Complete the pull -out switch with charging, you can choose whether to destroy mosquitoes under the lighting light, press the switch to destroy the mosquito
2. Extermination of the flies on the plane: For the flies parked on the plane, the hand holds the mosquito and flies, the scarcity net faces the flies, and gently place it at the same plane from 20--30 cm from the flies. Press it.After the switch, after the red light was on, the flies waved quickly. The flies were sucked into the two grids. The electric shock continued for 1-2 seconds.
3. Destroy the flies on the wall: For the flies on the wall, the hand holds the mosquito and flies, the scarcity net faces the flies, stuck to the wall, placed on the bottom of the flies or 20-30 cm on the side,Press the switch to wave quickly, the flies are inhaled into two grids, and the electric shock continues for 1-2 seconds. The flies were killed by electricity.
4. Destroy the flies parked in the air: For the flies parked on the rope hanging in the air, the hand holds the mosquito and fly shoots.Being in the two grids, the electric shock continued for 1--2 seconds, and the flies were killed by electricity.
5. Clean up the destroyed flies: If the flies fall to the desktop, the thin surface can be facing down, so that it is placed between the two metal bars of the thin surface, press the switch, and move gently. The pests will be inhaled.In the net, the handle is flipped to make the pests pick up the rare surface to the upward.No need to choose with your hands.
Precautions for use of electric mosquitoes
1. Please charge it in time after the power is used up. The maximum charging time cannot exceed 15 hours. If it is not used for a long time, the power supply for more than 8 hours for each three months will be replenished to enhance the battery life.
2. Mosquito shot killed on the mesh, please shake the net to fall off or clean it with a brush. Do not rinse with water to prevent short circuits.
3. The climate is humid. Mosquito shoots may absorb humidity without high pressure or low voltage. The effect of killing is reduced. It should be used in time to blow dry or dry in the sun.
4. Do not press the switch when charging, touch the mesh to ensure safety.
5. It is forbidden to press the mesh and press the power switch with one hand. Remember that this product cannot be used for entertainment and play to prevent accidents.
6. Forbidden strong damage to this product such as strong beatings, impacts, combustion.After use, please take care of this product and place it where children cannot touch.
7. Do not use it in flames or liquid places. Do not use metal conductives such as metal and other conductives to spark on the metal network.

Related tags： Houseware