The beam lamp and our traditional computer lights still have some details in the structure. The first is the light bulb circuit; the traditional computer lights used to use an inductive bubble line and a trigger, but the beam lamp generally uses an electronic zone (also known as the lighting lamp), which does not need to be an touchinger. There is an additional PFC (AC220V to DC380V), because the input end of the ballast is DC 380V. The second is the control section: the beam lamp is basically a transformer of the switching power supply, which communicates the traditional hungry inductor transformer. Because the switching power supply is used, the stability of the rear -level control line is greatly strengthened. Due to the high technical difficulty of the switching power supply, the chance of failure will be a little higher than the inductor transformer. Because the switching power supply is used, the beam lamp is not affected by the high and low changes of the external voltage. It can be input full voltage (110V-240V), and the problem points brought by the unstable voltage exist. For some common faults, the analysis is as follows:

Common fault 1: No reaction to boot?

1. Whether the power supply power supply is normal and whether the lamp power line falls off;

2. Whether the insurance pipe of the lamp is burned out;

3. Whether the switching power supply of the lamp is output voltage.

Common fault two: Do not light up?

1. First judge the quality of the bulb, check whether the bubbles of the light bulb have burned, and whether the core itself is broken.

2. When determining that the lamp is in the state of the bubble, the measurement of the main board bubble voltage is out of normal, and the normal situation is generally a voltage of 26-28 volts.

3. If the above two points are correct, measure the PFC output (the input end of the lighting device) is about 380V output of about 380V. If there is an output, it means that the PFC is good, so that you can directly determine whether there is a problem with the lighting device.

Common fault three: Automatic reset after a period of boot?

1. The output voltage of the switching power supply is unstable;

2. The wired loosening or the pressure line in the line is not tightened, resulting in poor contact, and automatic reset occurs.

Common fault four: Bubbles automatically bubble?

1. Bubbles are destroyed, and the bubbles are automatically blistered after a period of time. Check whether the heat dissipation system works properly. If the heat dissipation system fails, it will cause the temperature in the lamp to be too high. The temperature control switch will automatically jump away to ensure the safe use of the lamp. When the lights are turned off by the electronic light, the light will light up after the temperature of the light is reduced.

2. After bubbles of the bulbs, you cannot automatically blister: the topic of the bulb itself, the surface of the bulb spheres is blank, the inside is black, and the phenomenon of bubbles will also appear after a period of light (end of the light bulb life)