Outdoor full-color LED screen routine maintenance knowledge
Outdoor full-color LED screen routine maintenance knowledge
Outdoor full-color LED display in the field of advertising media is widely used. Although the product application has been very popular, but many people on the full-color LED screen daily maintenance of common sense is still very lack of, the following small make-up to popularize the outdoor full-color LED display daily maintenance of common sense.
First, LED display more than one module continuous not bright or abnormal: check the signal direction of the first abnormal module of the line and the power line is good contact, such as module no LED bright, then indicate no power input, please check the power supply part (can be checked with a multimeter), such as the appearance of the color (with color confusion of the bright spot) indicates that the module is no signal input, please check the first abnormal module of the line of the input end is not Please check whether the input end of the wires of the first abnormal module is in close contact, you can unplug it for several times to test, if the problem is still there, you can change the new wires.
Second, a single module does not light: check whether the module's power supply is good, mainly to check whether the power socket on the module is loose. If the whole module appears color confusion or color inconsistency (but there is a signal input, there is a correct picture) for the signal transmission line county poor contact, re-plugging line, or replace the tested line. If the replacement of good wires still have the same problem, please look at the PCB board interface problems.
Third, a single light does not light up the problem detection method: use a multimeter to check whether the LED is damaged, if the lights are bad, according to the following fifth item to change the lights. Specific test light method: the multimeter to resistance X1 gear, pointer multimeter black pen to the positive LED, red pen to the negative (digital table black pen to the negative, red pen to the positive), if the LED is bright, the measured lights are good, if the lights do not light, the measured lights are bad.
Fourth, LED bad point maintenance (out of control point): after a single light test confirmed that the LED is damaged, then according to the actual demand, selective use of the following maintenance methods.
1, front maintenance: with the corresponding type of screwdriver from the front will be fixed mask screws removed (pay attention to keep the screws), remove the mask, change the lights (please change the lights in accordance with the following method of changing the lights), change the lights and colloid sealing the end of the original mask restoration, tighten the screws (on the screws, please pay attention to do not pressure on the lights), and finally, if there is a colloid residue on the surface of the LED, please carefully remove the colloid.
2, the back of the maintenance: with the corresponding type of screwdriver from the back of the screws removed (pay attention to keep the screws), pull out the signal cable, for safety, please do not unplug the power supply cable to prevent accidents, carefully take out the module from the sheet metal holes, move to the back of the box, and then in accordance with the front maintenance method of maintenance on individual modules for the lights (please follow the following method of changing lights for the lights) or overhaul the other.
Fifth, change the light: will damage the LED around the gel with sharp tools (such as tweezers) to remove, and make the LED pins clearly exposed in the line of sight, the right hand with tweezers to hold the LED, the left hand with a soldering iron (temperature of about 40 ℃ or so, too high a temperature will be caused by damage to the LED) to contact with the solder, and to do a little stay (no more than 3 seconds, such as more than the time but do not meet the requirements of the disassembly, please cool down and then re-try) to melt the solder. try) to melt the solder and use tweezers to remove the LED. Will meet the requirements of the LED lights correctly inserted into the PCB circuit board holes, (LED lights, the long leg for the positive pole, the short leg for the negative pole, PCB “square holes” for the LED positive pin jacks, “round holes” for the LED's negative pin jacks), will be a small amount of Solder wire melted, glued to the iron head, with tweezers to adjust the direction of the LED, so that it is smooth, will be soldered in the LED and PCB connected to the same type of gel (PH value = 7) sealed LED.
Outdoor full-color LED display in operation, the display operator should also pay attention to inspections, to observe whether there is a strange sound, odor, light and other phenomena, such as LED display for a long time without using, to check beforehand, to determine that there is no problem when put into use. It should be noted that the table sticker LED display long-term non-use will lead to a decline in reliability, it is recommended that the weekly use of more than two hours, to reduce the erosion of moisture on the LED display.
First, LED display more than one module continuous not bright or abnormal: check the signal direction of the first abnormal module of the line and the power line is good contact, such as module no LED bright, then indicate no power input, please check the power supply part (can be checked with a multimeter), such as the appearance of the color (with color confusion of the bright spot) indicates that the module is no signal input, please check the first abnormal module of the line of the input end is not Please check whether the input end of the wires of the first abnormal module is in close contact, you can unplug it for several times to test, if the problem is still there, you can change the new wires.
Second, a single module does not light: check whether the module's power supply is good, mainly to check whether the power socket on the module is loose. If the whole module appears color confusion or color inconsistency (but there is a signal input, there is a correct picture) for the signal transmission line county poor contact, re-plugging line, or replace the tested line. If the replacement of good wires still have the same problem, please look at the PCB board interface problems.
Third, a single light does not light up the problem detection method: use a multimeter to check whether the LED is damaged, if the lights are bad, according to the following fifth item to change the lights. Specific test light method: the multimeter to resistance X1 gear, pointer multimeter black pen to the positive LED, red pen to the negative (digital table black pen to the negative, red pen to the positive), if the LED is bright, the measured lights are good, if the lights do not light, the measured lights are bad.
Fourth, LED bad point maintenance (out of control point): after a single light test confirmed that the LED is damaged, then according to the actual demand, selective use of the following maintenance methods.
1, front maintenance: with the corresponding type of screwdriver from the front will be fixed mask screws removed (pay attention to keep the screws), remove the mask, change the lights (please change the lights in accordance with the following method of changing the lights), change the lights and colloid sealing the end of the original mask restoration, tighten the screws (on the screws, please pay attention to do not pressure on the lights), and finally, if there is a colloid residue on the surface of the LED, please carefully remove the colloid.
2, the back of the maintenance: with the corresponding type of screwdriver from the back of the screws removed (pay attention to keep the screws), pull out the signal cable, for safety, please do not unplug the power supply cable to prevent accidents, carefully take out the module from the sheet metal holes, move to the back of the box, and then in accordance with the front maintenance method of maintenance on individual modules for the lights (please follow the following method of changing lights for the lights) or overhaul the other.
Fifth, change the light: will damage the LED around the gel with sharp tools (such as tweezers) to remove, and make the LED pins clearly exposed in the line of sight, the right hand with tweezers to hold the LED, the left hand with a soldering iron (temperature of about 40 ℃ or so, too high a temperature will be caused by damage to the LED) to contact with the solder, and to do a little stay (no more than 3 seconds, such as more than the time but do not meet the requirements of the disassembly, please cool down and then re-try) to melt the solder. try) to melt the solder and use tweezers to remove the LED. Will meet the requirements of the LED lights correctly inserted into the PCB circuit board holes, (LED lights, the long leg for the positive pole, the short leg for the negative pole, PCB “square holes” for the LED positive pin jacks, “round holes” for the LED's negative pin jacks), will be a small amount of Solder wire melted, glued to the iron head, with tweezers to adjust the direction of the LED, so that it is smooth, will be soldered in the LED and PCB connected to the same type of gel (PH value = 7) sealed LED.
Outdoor full-color LED display in operation, the display operator should also pay attention to inspections, to observe whether there is a strange sound, odor, light and other phenomena, such as LED display for a long time without using, to check beforehand, to determine that there is no problem when put into use. It should be noted that the table sticker LED display long-term non-use will lead to a decline in reliability, it is recommended that the weekly use of more than two hours, to reduce the erosion of moisture on the LED display.