In the process of outdoor LED display, it is inevitable that there will be bad lights, partial black screens, etc. It is generally due to problems on the LED display module. The following is a list of 5 common outdoor LED displays for you. Module failure and solutions:
Outdoor LED display
The LED display panel does not light continuously or is abnormal:
This phenomenon usually leads to a large black screen of the LED display
Solution: Check whether the cable and power cord of the first abnormal module in the signal direction are in good contact. If there is no LED display on the module, it indicates that there is no power input. Please check the power part (use a multimeter to check), if it appears Color (with chaotic highlights) indicates that the module has no signal input. Please check whether the input terminal of the first abnormal module is in close contact. It can be plugged and plugged for multiple times. If there is a problem, you can still replace it with a new one. String.
LED display dead pixels maintenance (out of control points):
If the LED is confirmed to be damaged after a single lamp test, the following maintenance methods can be selectively adopted according to actual needs.
2-1 Frontal maintenance: Use a screwdriver of the corresponding model to remove the screws of the fixed mask from the front (note the screws for good intentions), remove the mask, and replace the lamp (please follow the lamp replacement method below), replace the lamp and seal it with glue After the end, restore the original mask, tighten the screws (be careful not to press the lamp when screwing), and finally, if there is any glue remaining on the surface of the LED display, please carefully remove the glue.
2-2 Backside maintenance: Use a screwdriver of the corresponding model to remove the screws from the back (note the good intentions to protect the screws), and unplug the signal cable. For safety, please do not unplug the power cable to prevent accidents. Take care to remove the module from the Take it out of the sheet metal hole, move it to the back of the box, and then perform maintenance and replacement of a single module according to the front maintenance method (please change the lamp according to the following lamp replacement method) or overhaul others.
Detection method of single light off problem:
It will cause dead lights, and the playback image will be incomplete and unclear.
Use a multimeter to check whether the LED display is damaged. If the lamp is broken, replace it according to item 5 below. Specific lamp test method: set the multimeter to resistance X1, connect the black test lead of the analog multimeter to the positive electrode of the LED, and connect the red test lead to the negative electrode (the black pen of the digital meter is connected to the negative, and the red pen is connected to the positive). If the LED is on, the measured light is Yes, if the light is not on, the measured light is broken.
Outdoor LED display
LED display single module does not light up:
Will cause the LED display module to not light up, and a black screen appears on the module
Check whether the power supply of the module is good, mainly check whether the power socket on the module is loose. If the color of the whole module is chaotic or inconsistent (but there is signal input, there is a correct picture), it means that the signal transmission line is poorly connected. Re-plug the flat cable, or replace the tested flat cable. If you still have the same problem after replacing a good cable, please check whether there is a problem with the PCB board interface.
Change the light
Use a sharp tool (such as tweezers) to remove the colloid around the damaged LED display, and make the LED pins clearly visible in the line of sight. Use the tweezers to clamp the LED display with your right hand, and use a soldering iron with your left hand (the temperature is about 40 degrees, over High temperature will cause damage to the LED display) Touch the solder and stay for a while (not more than 3 seconds, if it exceeds the time but does not meet the disassembly requirements, please cool down and try again) Melt the solder and use tweezers to display the LED The screen is removed.
Insert the LED display lamp that meets the requirements into the hole of the PCB circuit board. (The long leg of the LED lamp is the positive pole and the short leg is the negative pole. The "square hole" on the PCB is the LED positive pin socket, and the "round hole" is The negative pin socket of the LED), melt a little solder wire, glue it to the tip of the soldering iron, use tweezers to adjust the direction of the LED display to make it stable, solder the solder to the connection between the LED and the PCB, and use the same type of gel (PH Value=7) Seal the LED display.
