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    3. Common faults and solutions of LED point light sources

      2021-08-23 11:45:00 478

      In recent years, domestic landscape lighting has developed rapidly. Outdoor decorative landscape lighting for the purpose of beautifying urban landscapes and commercial advertisements is receiving more and more attention and applications; LED point light sources are available due to their unique advantages. It can be combined into lines for contour lighting, and can also be combined into large pixel screens in an array, and various video animation effects can be played synchronously online. It has become a main product in the lighting project; LED point light sources In actual use, there will always be more or less failures.

      Next, I will give you a detailed introduction to some common failure phenomena and analysis solutions of LED point light sources.

      Fault 1: After power-on, the controller fault light flashes, the point light source is off, and there is no animation output?

      Answer: This situation is generally because the controller does not read the card correctly and does not output a valid control program. The reasons may be:

      (1). The SD card is empty and there is no program file

      (2). The program file name in the SD card is wrong, causing the SD card to be unrecognized

      (3). SD card is not formatted as required before copying program files

      (4). The program file in the SD card does not match the lamp control IC and controller model

      (5). Test after replacing the new SD card and controller to rule out the possibility of damage to the SD card and controller

       

      Fault 2: After power on, the controller indicator is normal and there is signal output, but the point light source has no effect change?

      Answer: There are generally the following reasons for this situation:

      (1). Check whether the signal line of the lamp and the controller are properly connected

      (2). The signal of the external control lamp has an in/out direction, check whether the control signal enters from the signal terminal of the first lamp

      (3). Check if the effect file in the SD card is made, and whether the selected model of the LED is consistent with the chip used by the current lamp

      (4). Check whether the lamp is normally powered

       

      Fault 3: After the controller is connected to the lamp, the effect changes, but the lamp flickers, and the controller indicator shows normal?

      Answer: (1). The signal ground wire between the controller and the lamp is not connected

      (2) The power supply voltage of the lamp is insufficient

      (3). The effect made in the SD card is wrong, and the lamp chip selected when making the effect does not match the chip of the actual lamp

      (4). The distance between the controller and the headlight is far, and the signal transmission is unstable

      Fault 4: After power-on, the controller and some of the lamps in the front work normally. Starting from a certain lamp, the lamps in the rear are not normal?

      Answer: In this case, the latter part of the lamps fails to receive the signal normally, and the reasons are usually as follows:

      (1). Individual lamp IC failure or damage to the signal line before and after the lamp, generally replace the first non-lighting lamp in the abnormal position or the lamp in front of it.

      (2). When writing the program, the number of point light sources is written less, so that the latter part has no animation effect, and you need to contact the manufacturer to rewrite the program

       

      Fault 5: After power-on, the controller works normally, and the lamp changes position abnormally, which is different from the designed video screen effect?

      Answer: This situation is caused by the inconsistency between the order of installation of lights and the designed wiring diagram. It is necessary to adjust the order and position of the installation of lights according to the designed wiring diagram, or input the actual arrangement of lights. Reprogram the program on the computer

       

       

      Fault 6: After power-on, the point light source can change normally, but how many individual point light sources display colors are different from others?

      Answer: This situation is generally due to damage to one of the three chips of the lamp beads R, G, and B, which causes the display to be lacking in color. You only need to replace the problematic point light source.

       

      Fault 7: The SD card cannot be formatted when copying the program?

      Answer: (1). First confirm whether the protection switch on the side of the SD card has been unlocked, and the direction of unlocking is the gold needle end of the SD card.

      (2). The protection lock has been opened as required, but it still cannot be formatted. In this case, the SD card reader is broken. Please replace the SD card reader.

      (3). If the above operation still cannot solve the formatting problem, please replace the SD card and retest


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