First of all, a set of high-quality LED lamps should consider the different reasons of heat dissipation and application environment. Therefore, other shape projection lamps only have some differences in appearance, in fact, the principle is the same. The most important is led light source (also known as LED lamp bead), LED power supply (also known as LED drive), shell, waterproof gasket and water-proof glue.
LED light source, driving quality is excellent, waterproof, and the shell is thick enough to meet the heat emission of light source and power supply, so there is basically no problem with the projection lamp. So, what if the LED floodlight is broken, it doesn't light up a bit, it flashes, sometimes it lights up, and it's slightly lit? I'll tell you how to repair and replace it today. The LED floodlight is broken. It is mainly the light source and driver. The main problem is that the light source and power supply are not good. Use the tool to check and know that it's broken. The reasons why the LED floodlight doesn't light up are as follows: 1. The power supply is broken, and it's not powered up: basically, the power supply is the power supply. The power supply provides the constant current working voltage for the light source, and often many floodlights are broken in the power supply.
In the process of converting alternating current into direct current, there is a problem in the power supply, which may cause the LED floodlight not to be on and flash directly. Generally, this kind of lamp cannot be repaired, only the power supply can be changed. Another reason is that the power supply is good, which shows that the floodlight can be on for a while at the beginning and then flash. This is mainly because the heat of the lamp bead can not be emitted, which leads to flashing all the time. The fundamental problem is that the shell is not The first is to check whether the shell meets the 50g / W standard. In addition, check whether the light source and the shell are well connected, and whether the thermal conductive paste is evenly coated. If the power supply is broken, try changing the power supply to see if the light is still off. If not, then the problem is not necessarily in the power supply.
Another reason is that the temperature difference between winter and summer varies greatly in some areas, which causes the working temperature of the power supply to be too high or too low and cannot operate stably. Objectively speaking, the power supply is all unqualified. If the power supply is broken, replace it with a better one. The quality of a power tube will not be good until two or three years. 2. The light source is broken and doesn't light up: generally, the integrated lamp bead is used for the projection lamp. See if there is a black spot at the sealing glue position of the middle lamp bead. This black spot is caused by two reasons. The first one is used for a long time. The temperature of the lamp bead is formed by the high temperature of glue and fluorescent powder. The other reason is that the current of the power supply is too high. Look at the open circuit or necrosis of the lamp bead itself. In addition, the water-proof of the floodlight is not well done, the water in the lamp causes the lamp bead to burn off, the chip life is not long, the quality is not good and other reasons. The poor heat dissipation of the light source of the floodlight will also cause the light failure of the light source (in short, it doesn't light up before) to be serious or burned out. If the shell is in good condition, it can be used to replace the lamp beads, but you need to know that the string of the power supply should match the string of the light source. 3. Wire solder joint is faulty, resulting in power failure: the integrated lamp bead in the floodlight is connected with two wires, whether the lamp bead has faulty welding, false welding, cold welding, whether the power input line has loose connection points, open circuit, etc., and check whether the driving connection line is damaged.
The main reasons for the LED lamp not to light up are voltage instability, lamp bead quality and power quality. Since the LED lamp is driven by constant current and the converted DC voltage is relatively low, the problem of voltage instability can be basically ignored. Then the reasons for the LED lamp not to light up are the lamp bead quality and power quality. Finally, led floodlights belong to high-power LED products. Manufacturers with good quality will go through strict aging tests before leaving the factory to ensure that they are good products for consumers. No manufacturer of electronic products dare to guarantee that 100% of them will not have problems. After problems occur, contact the manufacturer in time. The warranty of floodlights is at least 2 years. If you buy cheap floodlights In half a year, when there is a problem in one year, the manufacturer won't pay attention to you. Because of the poor materials, low cost and high after-sales expenses, the manufacturer will lose money. Therefore, no matter what electronic products, after-sales service is very important. Remember!
The floodlight is broken. Can you repair it by yourself? The LED floodlight can be repaired, but it can't be repaired by non professionals. It's recommended to find a professional manufacturer to help repair it. Of course, ordinary companies are not willing to repair, because it is more difficult to repair a lamp than to produce a lamp. It is recommended to buy a lamp with a slightly better quality when buying a lamp. Of course, a lamp with a better quality will be more expensive. A good lamp manufacturer will guarantee the quality for 2-5 years.