During the use of LED display screen, various faults will be caused due to pollution, looseness, vibration, heating, environmental temperature change and other factors, which will affect the normal use of LED display screen and even cause serious accidents. Therefore, regular maintenance of the LED display screen can not only make the LED display screen in the best operating state, but also effectively prevent the occurrence of faults, which can achieve twice the result with half the effort for the normal operation of the LED display screen.
The maintenance methods of LED display screen mainly include four aspects: patrol inspection, cleaning, fastening, and surface cleaning of display screen.①、 Patrol inspection
The "monthly inspection system" is generally adopted for the inspection cycle of LED display screen. The "weekly inspection system" is implemented for the maintenance of large LED display screen, and the monthly maintenance and inspection table of LED display screen must be reported every week. Specific maintenance content and response speed commitment:
1. LED display screen maintenance, including lamp tube, module, module, power supply and control card;
2. LED display control system maintenance, including controller, optical fiber conversion card, distributor and transmission card;
3. Special playback operation software for LED display screen, including maintenance and upgrade of playback software;
4. Regular (monthly) on-site inspection by technicians to inspect and maintain the system;
5. Guarantee of major activities: the company's technical personnel provide guidance to ensure the smooth implementation of on-site activities.
6. For outdoor LED display screen
, the damage caused by natural factors such as wind, rain, thunder and electricity is not within the scope of warranty. The owner shall insure with the insurance company and the insurance company shall compensate.
7. During the maintenance service, the maintenance problems shall be solved within 8 hours for general faults, and no more than 24 hours for major accidents. It shall not take more than 24 hours to replace modules and other accessories during maintenance. After the maintenance is completed, the first service ensures that the large screen does not have module level or above faults (such as module color deviation, module black, one column does not light up, etc.) and plays normally.②、 Clean up
For the display screen with low protection level, especially the outdoor screen, dust in the atmosphere enters the equipment through the ventilation hole, which will accelerate the wear and even damage of the fan and other equipment. The dust will also fall on the surface of the internal control devices of the display screen, reducing the thermal conductivity and insulation performance. In case of wet weather, the dust will absorb moisture in the air and cause a short circuit; It can also lead to mildew of PCB and electronic components for a long time, resulting in decline of technical performance of equipment and failure. Therefore, the cleaning of LED display screen seems simple, but it is actually a very important part of maintenance.③、 Fastening
LED display screen is a kind of high power consuming equipment. After a long period of operation, due to repeated startup, shutdown and operation, the wiring terminals of the power supply part will become loose due to cold and heat, which will form a virtual connection. In serious cases, it will heat up and even ignite the plastic components nearby. The signal wiring terminal will also become loose due to the cold and heat changes of the ambient temperature, resulting in poor contact due to moisture erosion, which will lead to equipment failure. Therefore, the connectors of the LED display must be fastened regularly. When adjusting fasteners, the force shall be even and appropriate to ensure firmness and effectiveness.④、 Display surface cleaning
Visually inspect and check the LED display screen under the two states of bright screen and black screen. Including: whether the surface of the display screen is polluted, in order to remove the influence of surface dirt on the luminous characteristics; Whether the surface of the display screen is damaged or cracked; Whether the communication distribution cable line is normal; For the equipment with high protection level, although the components and connectors with high reliability are selected, their tightness has become a key factor. Therefore, it is necessary to regularly check the integrity of the sealing part; For outdoor screen steel structure, check the surface paint and corrosion; If the outdoor screen surface is seriously polluted, the display surface shall be cleaned. The traditional LED display screen cleaning is a high-altitude operation, which requires a professional cleaning team. The high-altitude lifting rope (commonly known as spider man) or hanging basket is used for cleaning. While jindano flip the display on both sides only needs to flip the triangular prism of the display to the back, and the cleaning personnel can stand on the maintenance platform for cleaning. Select different cleaners for targeted cleaning according to different dirt on the screen, so as to ensure that the LED display screen can be cleaned without damaging the LED lamp tube and mask.
Two points should be paid attention to in cleaning preparation: first, the power cord should be pulled out before cleaning; The second is the selection of cleaning liquid. Generally, cleaning liquid includes electrolyte, high-purity distilled water, antistatic liquid, etc. it should be of good quality to effectively clean the dust and other dirt marks on the LED screen.Cleaning and maintenance are divided into three steps:
Step 1: dust collection. First, remove the dirt and dust on the surface of the display screen mask.
Step 2: wet washing. Pay attention not to spray the washing liquid directly on the screen, but to spray a little cleaning liquid on the cleaning cloth, and then gently wipe it in the same direction. You can also use the soft brush on the vacuum cleaner to brush the lamp cover to clean the dirt.
Step 3: drying. Use the vacuum cleaner to absorb the water marks left after wet cleaning to ensure that the display screen cover is clean and free of dust.