As landscape lighting in China develops rapidly, outdoor decorative and functional lighting aimed at beautifying urban landscapes and conducting commercial advertising is gaining increasing attention and application. With their unique advantages LED point light sources can be used for accent decoration, combined to outline shapes with bright lines, or arranged in arrays to form large pixel screens. They are capable of playing various video and animation effects in sync and have become a leading product in lighting projects. However LED point light sources may encounter several faults in actual use.
Below is a detailed introduction to some common faults of LED point light sources and their analysis and solutions:
Fault 1: After powering up, the controller's fault light flashes, the point light source does not illuminate, and there is no animated effect output?
Reasons: This is typically due to the controller not reading the card correctly, failing to output a valid control program. Possible causes include:
(1) SD card is empty, containing no program files.
(2) Program file names in the SD card are incorrect, making it unrecognizable to the SD card.
(3) SD card was not formatted as required before copying program files.
(4) Program files in SD card do not match the light fixture control IC or controller model.
(5) Replace with a new SD card and controller for testing to rule out damage to the SD card and controller.
(2) Program file names in the SD card are incorrect, making it unrecognizable to the SD card.
(3) SD card was not formatted as required before copying program files.
(4) Program files in SD card do not match the light fixture control IC or controller model.
(5) Replace with a new SD card and controller for testing to rule out damage to the SD card and controller.
Fault 2: After powering up, the controller's indicator light is normal, there is a signal output, but the point light source shows no effect?
Reasons: (1) Check if the light fixture's signal line is correctly connected to the controller.
(2) Externally controlled light fixtures have input/output directions; ensure the control signal enters from the first fixture's signal end.
(3) Check in the SD card if the effect file is matched with the model of LED currently used in the fixtures.
(4) Verify if the light fixture is correctly powered.
(2) Externally controlled light fixtures have input/output directions; ensure the control signal enters from the first fixture's signal end.
(3) Check in the SD card if the effect file is matched with the model of LED currently used in the fixtures.
(4) Verify if the light fixture is correctly powered.
Fault 3: After connecting the controller with the light fixture, effects are visible, but the light fixture flickers, while the controller indicator shows normal?
Reasons: (1) There is no connection between the signal ground of the controller and the lights.
(2) Insufficient power supply voltage to the light fixtures.
(3) The effect created in the SD card is incorrect; the selected chip model does not match the actual light fixture's chip.
(4) The distance from the controller to the first light is too great, causing unstable signal transmission.
(2) Insufficient power supply voltage to the light fixtures.
(3) The effect created in the SD card is incorrect; the selected chip model does not match the actual light fixture's chip.
(4) The distance from the controller to the first light is too great, causing unstable signal transmission.
Fault 4: After powering up, the controller and some lights in front work normally, but the lights from a certain point onward are not working properly?
Reasons: This typically occurs when the lights in the rear are unable to receive the signal properly. Common causes include:
(1) Individual light fixture IC is faulty, or the signal lines before/after a specific light are damaged; usually, replacing the first non-lit light or the one before it solves the issue.
(2) The number of point sources entered when writing the program is less than what is actual, resulting in no animated effects for the rear portion; contact the manufacturer to rewrite the program.
(1) Individual light fixture IC is faulty, or the signal lines before/after a specific light are damaged; usually, replacing the first non-lit light or the one before it solves the issue.
(2) The number of point sources entered when writing the program is less than what is actual, resulting in no animated effects for the rear portion; contact the manufacturer to rewrite the program.
Fault 5: After powering up, the controller works normally, but the positioning of light fixture changes is abnormal, differing from the designed video effect?
Reasons: This is caused by the installation sequence and design wiring diagram not being consistent. Adjust the installation sequence and positions according to the designed wiring diagram, or input the actual installation arrangement into the computer to reprogram.
Fault 6: After powering up, all point light sources change normally, but a few show different colors?
Reasons: This situation is typically due to damage to one of the R, G, B chips in the light bead, causing color deficiency. Simply replace the problematic point light sources.
Fault 7: When copying programs, the SD card cannot be formatted?
Reasons: (1) First, make sure the SD card's lock switch on the side is unlocked, with the unlocking direction toward the SD card's metal pins.
(2) If the protection lock is unlocked but formatting is still not possible, it is often the case that the SD card reader is faulty. Replace the SD card reader.
(3) If the issue remains unsolved, replace the SD card and retest.
(2) If the protection lock is unlocked but formatting is still not possible, it is often the case that the SD card reader is faulty. Replace the SD card reader.
(3) If the issue remains unsolved, replace the SD card and retest.
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