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What should I do if the LED flood light fails to light up and flashes?

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What should I do if the LED flood light fails to light up and flashes?

Core reminder: What should I do if the LED flood light is broken, does not light up, flashes, sometimes bright, or slightly bright? I will tell you how to repair and replace it today.


LED floodlights, also known as LED floodlights, spotlights, projection lights, spotlights, etc., are mainly used for architectural decorative lighting and commercial space lighting. They have heavy decorative components and have a round shape. There are also square ones, because the different reasons for heat dissipation and application environment must be considered, so other shape floodlights only have some differences in shape, in fact, the principles are the same.

If you want to know how to deal with a broken LED floodlight, you must first understand the most basic structure of the floodlight.


As mentioned above, because it is necessary to consider the different reasons of heat dissipation and application environment, other shapes of floodlights only have some differences in shape, in fact, the principles are the same. LED flood lights are mainly LED light source (also known as LED lamp beads), LED power supply (also known as LED driver), housing, waterproof gasket and potting waterproof glue. LED light source, the driving quality is excellent, the waterproofing is good, the shell is thick enough to meet the heat dissipation of the light source and power supply, and there is basically no problem with the flood light. So, what if the LED flood light is broken, does not light up, flashes, sometimes bright, or slightly bright? I will tell you how to repair and replace it today.


The LED flood light is broken, mainly because of the light source and driver, and the most important thing is that the light source and power supply used are not good. Check it with a tool to know that it is broken. The reasons why the LED flood light does not turn on are:

1. The power supply is broken, no power supply: the lamp is broken basically is the power supply, the power supply provides a constant current working voltage for the light source, and often the power supply is broken when many projector lamps are broken. The power supply has a problem in the process of converting AC power to DC power, which may cause the led flood light to not light up and flash. Generally, there is no way to repair it, only to replace the power supply; the other reason is that the power supply is good, and the performance is rigid. At the beginning, the project-light lamp can be on for a while and then start to flash. This is mainly because the heat of the lamp beads can not be dissipated, which leads to the flashing all the time. The fundamental problem is that the shell does not disperse the lamp beads of the light source. Standard, in addition, check whether the light source and the housing are well connected, and whether the thermal paste is evenly applied. If the power supply is broken, try another power supply to see if the light still does not turn on. If it does not light up, then the problem is not necessarily the power supply. Another reason is the large temperature difference between winter and summer in some areas, resulting in the power supply operating temperature is too high or too low, unable to operate stably, objectively speaking, this power supply is not qualified. If the power supply is broken, change it to a better one. If one power supply can't last for two or three years, the quality will not work.


2. The light source is broken and does not light up: Generally, the flood light uses integrated lamp beads. Check whether there is a black spot in the middle of the lamp bead sealing position. This black spot is caused by two reasons, the first long time use , The temperature of the lamp beads is formed by the high temperature of glue and phosphor powder. Another reason is that the current of the power supply is too high, which is caused by the open circuit or necrosis of the lamp beads. In addition, the floodlight is not waterproof properly, water has entered the lamp, causing the lamp beads to burn out, the chip life is not long, and the quality is not good. The poor heat dissipation of the cast light source will also cause the light source to decay (simply speaking, it is not bright before) or burn out. If the shell is intact, it can be used to replace the lamp beads, but you need to know the series and parallel of the power supply and match the series and parallel of the light source.

3. Welding of the wire solder joints causes no power: the integrated lamp beads in the floodlight are connected to two wires, whether the lamp beads are soldered, fake soldered, or cold soldered, whether the power input wire has loose connection points or open circuits, etc. , Check whether the connecting wire of the drive is damaged.


In short, the main reasons for the LED flood light not to light up and flashing may be voltage instability, the quality of the lamp beads, and the power quality. Since the LED flood light is driven by a constant current, the converted DC voltage is relatively low. Therefore, the problem of voltage instability can basically be ignored, so the cause of the LED floodlight does not shine and flashes is the quality of the lamp beads and the quality of the power supply.


Finally, LED floodlights are all high-power LED products. Good quality manufacturers will undergo strict aging tests before leaving the factory to ensure that they are good products in the hands of consumers. No electronic product manufacturer can guarantee 100% failure. If there is a problem, you should contact the manufacturer in time after the problem occurs. The warranty of the floodlight is at least 2 years. If you buy a cheap floodlight and use it for half a year, if there is a problem within 1 year, the manufacturer will basically not I'll take care of you, because cheap floodlights use poor materials, reduced costs, and high after-sales costs, manufacturers will lose money, so no matter what electronic products, after-sales service is very important, remember!


The floodlight is broken, can I repair it myself?

LED flood light can be repaired, but non-professionals cannot repair it. It is recommended to find a professional manufacturer of LED lights to help repair. Of course, most companies are reluctant to repair, because repairing a lamp is more troublesome than producing one! It is recommended to buy lamps of better quality when you usually buy lamps, of course, better quality will be more expensive! Good lighting manufacturers will guarantee 2-3 years.

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