LED flood light (LEDDownlight) and LED floodlights , spotlights, projection lights, spotlights, etc., mainly used for architectural decorative lighting, as well as commercial space lighting, decorative components are heavier, its appearance has The round is also square, because it has to consider the different reasons of heat dissipation and application environment, so other shape floodlights only have some differences in appearance, in fact, the principle is the same.
Want to know the LED floodlights broken processing method, we must first understand the most basic structure of the floodlights (as shown below), here is the square as an example .
As mentioned above, there are some differences in the shape of the floodlights because of the difference in heat dissipation and application environment. In fact, the principle is basically the same. LED floodlights are mainly composed of LED light source (also known as LED lamp bead ), Led Power Supply (also known as LED driver, transformer), outer casing, waterproof gasket and water-filled rubber. The LED light source, the driving quality is excellent, the waterproofing is good, the outer casing material is thick enough (can meet the heat generated by the light source and the power supply work ) , and the floodlight is basically not problematic. Then, if the LED flood light is broken, there will be no light, a flash, sometimes bright, how to do it? I will tell you how to repair and replace it today .
The LED flood light is broken, mainly the light source and the drive. The most important source is the light source and the power supply are not good enough to cause problems. If there is a tool to detect it, you know which one is broken. Here is the general reason why the LED flood light does not light up:
1. The power supply is broken, no power supply: the majority of the bad light source of the flood light , the power supply provides a stable working voltage for the light source.
The power supply has problems in converting AC power into DC power, which may cause the LED flood light to be off and flash. This kind of general can't be repaired. Directly change the power supply. Of course, you need to figure out the number and current of the light source. The voltage, whether it is a foot tile, if you do not know how to change the power supply, it will not be how long it will be bad or not bright enough.
Another phenomenon is that the spotlight can be turned on for a while and then flashes or turns on the light. This is mainly because the power supply components are unstable and cause flashing. The fundamental problem is that the power quality is too poor or the heat conduction is not good. After working for a period of time, the temperature of the power supply itself rises, resulting in unstable components of the power supply itself. The temperature difference between winter and summer in some areas varies greatly, resulting in the power supply operating temperature being too high or too low to operate stably. Objectively speaking, this power supply is unqualified. Product. If the power supply is broken, then change a good point, a general quality power supply can not be two or three years, the quality will not work, and now many power supplies are 5 years warranty, with a 5,6 year problem is not big.
2. The light source is broken, no light: Look at the position of the seal in the middle of the lamp. Is there any black spot? This black spot is caused by two reasons. The first time is used, the temperature of the lamp is high through the glue and the phosphor. results in the formation, there is a reason for high current power supply (this power is unstable, there may be poor quality light source), light beads themselves look like open or necrosis reasons.
The poor heat dissipation of the floodlight source will also cause the light source to fade (that is, it has not been lit before) or burn out. In addition, there is no waterproofing of the floodlights. The water inside the lamp is flooded, causing the lamp beads to burn out.
If the outer casing is intact, it is still possible to replace the lamp bead, but you need to know the power, current, voltage and other parameters of the power supply, and match the light source.
Another problem with the power supply and the light source is that the floodlight is slightly bright , and the light is very weak. In this case, the power supply may be broken or the light source may be broken. It is necessary to use a multimeter to measure.
If the spotlight is used for a period of time and it is not bright when it is just bought , then the situation is that the light source is of poor quality and the light decay is severe. The spotlight will be darker as the time of use.
3. Weld wire solder, resulting in no power: flood light lamp beads which integrates two lines are connected, whether the lamp beads Weld, false welding, cold welding, the power input cable is loose point connection, disconnection, etc. Check if the drive cable is broken.
4. Floodlights into the water: This is not waterproof, and the consequences may cause the light source and power supply to burn. This is basically not saved. You can change the light source and power supply if you know it well. Can contact the factory after sale, the main reason is that the quality is not enough.
In short, the led floodlights are not bright, the main reasons for the flash may be power quality, light source quality, shell thickness and waterproof treatment. LED floodlights are high-power LED products, good quality manufacturers before leaving the factory They will undergo strict aging tests to ensure that they are good products in the hands of consumers.
No manufacturer of electronic products can guarantee 100% no problem. After the problem occurs, you should contact the manufacturer in time to sell the lamp. The warranty of the spotlight is at least 2 years. As long as it is not caused by your own, the general manufacturer will give you after-sales. Of course, if you buy a very cheap spotlight, when the manufacturer sells it, it is said that the warranty is 3 years, and the warranty is 5 years. When it is used for half a year or one year, the manufacturer will basically ignore you. Because the materials used for cheap floodlights are poor, the production process is not standardized and it is very easy to go wrong. The cheaper spotlights are inherently low-profit, and if they add after-sales costs, the manufacturers will lose money. Therefore, no matter what electronic products, after-sales service is very important, remember!
The floodlight is broken, can you repair it yourself?
LED flood light can be repaired, you can also find a professional manufacturer of LED lights to help repair. Of course, the average company is not willing to repair, because repairing a light fixture is more trouble than producing a light fixture! It is recommended to buy lamps with a slightly better quality when buying lights, of course, good quality will be more expensive! A good luminaire manufacturer can guarantee for more than 2 years, and the manufacturer will solve it for you during the warranty period.
How to identify poor quality floodlights?
1. Look at the weight, the same level of 100w is better than the foot, whether the shell is full of material, the thickness of the heat sink and the length of the individual, the thickness is thick and the length is better. At present, the luminous efficiency utilization rate of commercial high-power LEDs is only 15% to 30%, and most of the rest of the energy is converted into heat energy. If the heat can not be effectively discharged, it will lead to very serious consequences, so heat dissipation is very important. When choosing, choose thicker and heavier.
2. Look at the wattage, 100w some manufacturers can not do this high, may only look like 50w or 75w, commonly known as 0.5w and 0.75 watts. To test the power, just buy a multimeter and actually measure it. Light source chip quality and size, in order to reduce costs and improve competitiveness, manufacturers use low quality light bulbs. Under the seller's flicker, you can count the number of integrated lights, there are so many chips, but the size is very small, the brightness is very low. This is the phenomenon that people often say that they are short and short, but some consumers may not have the professional tools to check them out.
3. Look at the seal, the waterproof is done well, if the seal is done well, it will not be easy to enter the water, that is to say, the waterproof performance is good, as long as the lamp housing is good, plus a good sealing strip, it must be IP65 or above. The floodlights are protected from rain and moisture, and there is a safety hazard in the water for a long time. It is recommended to use professional lamps in the water, such as underwater lights and buried lights. The package is tight.
4. Look at the power supply, may open the power supply, some manufacturers in order to save costs, there is no waterproof epoxy resin in the power supply, power supply waterproofing and so on. The power supply is assembled from a number of electronic components that are aged and tested after assembly and then assembled into a floodlight.
The life of the power supply directly affects the overall life of the luminaire. Specifically, consult the various parameters of the driver about the drive, such as output voltage and current, operating temperature, and protection level. The power supply of the floodlights is to be waterproofed. I have even seen some manufacturers in the power supply to smack the consumers. Take 30W LED power supply, there are a few pieces, there are dozens of pieces, which is actually a lot of famous.
5. Look at the process, the quality of the whole lamp is related to the power supply of the lamp, the light source and the sealing strip, the thickness of the cable, the use of the thermal grease , the craft level of the worker (care level, welding process), the workers of the small workshop are not washing, not to mention those Anti-static clothing.
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