1. The UV fluorescent lamp does not light up. Analysis […]
1. The UV fluorescent lamp does not light up.
Analysis and maintenance: UV fluorescent lamps are not bright for a number of reasons. Firstly, the power line and switch S are normal. Generally, the lamp is aging, air leakage, poor electrode contact or filament burnout. Visually, the two ends of the lamp have been blackened, and then the lamp is used to measure the filament of the lamp; one filament has a resistance of 8.5 Ω, which is normal; the other filament has an infinite resistance, thereby judging that the filament is blown to cause the failure. Available models YFl0T9BL or T8F10BL, can also be replaced with other models of 10W UV fluorescent lamps. When purchasing, please pay attention to the outer diameter and length of the lamp tube are the same as the original tube, otherwise it will be troublesome when assembling the lamp tube.
Please note that the life of the UV fluorescent lamp is related to the method of use and fluctuations in the mains voltage, in addition to the quality of the lamp. In order to extend the service life of the lamp, the number of times the power switch is turned on and off every day should not be too much, and it is best once. If the brightness of the lamp is particularly bright, indicating that the mains voltage is too high, the mosquito killer should be temporarily stopped, which will prevent premature aging of the lamp.
2. Both ends of the UV fluorescent lamp are dark red and not fully lit.
Analysis and overhaul: Generally, the sF dynamic and static contact of the starter are stuck and short-circuited, causing the sF to fail to start normally and causing a malfunction. Remove the cover and measure the two pins of SF with a multimeter. The normal state should not pass. If it is, the SF is damaged. Before the factory, the manufacturer cut off the small capacitor of the starter. The maintenance can be replaced by the model YQ-250V and 4~80W starter.