First of all, to inspect
The general inspection of LED display screens adopts the "monthly inspection system", and the maintenance of large-scale LED displays implements the "weekly inspection system". The specific maintenance content and response speed promise:
1. LED display screen body repair, including lamp tube, module, module, power supply, control card;
2. Maintenance of the LED display control system, including the controller, optical fiber conversion card, distributor, and sending card;
3. Special playback operating software for LED display, including maintenance and upgrade of playback software;
4. Regular (once a month) on-site inspection by technicians to inspect and maintain the system;
5. Support for major events: The company's technical staff guides to ensure the smooth development of on-site activities.
6. For outdoor LED displays, damage caused by natural factors such as wind, rain, thunder, electricity, etc., is not covered by the warranty. The owner needs to purchase insurance from the insurance company, and the insurance company will pay for it.
7. During the maintenance service period, the maintenance problem should be solved within 8 hours for general failures, and the major accidents should not exceed 24 hours. For repairs that require replacement of modules and other accessories, it should not exceed 24 hours. After the repair is completed, OneService ensures that the large screen does not appear at the module level or above (such as the module color cast, the module is black, a row is not bright, etc.), and the normal playback.
Two, clean up
For display screens with low protection levels, especially outdoor screens, dust in the atmosphere enters the equipment through the ventilation holes, which will accelerate the wear and tear or even damage to equipment such as fans. Dust will also fall on the surface of the internal control device of the display, reducing the thermal conductivity and insulation performance. In humid weather, the dust absorbs moisture in the air and causes a short circuit; it can also cause mildew on the PCB board and electronic components in the long term, resulting in a decline in the technical performance of the device. error occured. Therefore, the cleaning of the LED display may seem simple, but it is actually a very important part of the maintenance work.
3. Fastening
LED display is a high power consumption equipment. After running for a long time, due to multiple start-stops and operations, the wiring terminals of the power supply part will become loose due to cold and heat, and the contact will be weak, forming a virtual connection. Ignite the plastic component next to it. The signal wiring terminals will also become loose due to changes in the ambient temperature, and moisture erosion will cause poor contact, which will lead to equipment failures. Therefore, the LED display connectors must be tightened regularly. When adjusting the fasteners, the force should be even and appropriate to ensure firmness and effectiveness.
Fourth, the surface of the display screen is clean
Visually inspect and inspect the LED display screen in both the bright screen and the black screen state. Including: Whether the surface of the display screen is contaminated, the purpose is to remove the influence of surface dirt on the luminous characteristics; whether there are damage cracks on the surface of the display screen; whether the communication and distribution cable lines are normal; for the equipment with high protection level, although the high reliability is selected Components and connectors, but the airtightness becomes a key factor. Therefore, it is necessary to check the integrity of the seal regularly; for the outdoor screen steel structure, check the surface paint and rust; for the outdoor screen surface pollution is particularly serious, but also Clean the display surface.
LED display cleaning is a high-altitude operation, and a professional cleaning team is required. The cleaning operation adopts the high-altitude sling method (commonly known as the spider man) or the hanging blue, equipped with professional cleaning equipment. The cleaning staff chooses different cleaning agents according to the different dirt on the screen to clean in a targeted manner, so as to ensure that the LED tube is not damaged. Complete the cleaning of the LED display under the premise of the mask and face mask. Two points need to be paid attention to when preparing for cleaning: 1. Before cleaning, you need to unplug the power cord. Second, the choice of cleaning fluid, cleaning fluid generally includes electrolyte, high-purity distilled water, antistatic fluid, etc., to choose good quality, in order to effectively clean the dust and other stains on the LED screen.
Cleaning and maintenance are divided into three steps: the first step: vacuuming. First suck and sweep away the dirt and dust on the surface of the display mask. The second step: wet washing. Be careful not to spray the lotion directly on the screen, but spray a little cleaning liquid on the cleaning cloth, and then gently wipe in the same direction. You can also use the soft brush on the vacuum cleaner to scrub the lamp mask to clean the dirt. The third step: drying. Use a vacuum cleaner to absorb the water marks left after wet washing to ensure that the display mask is clean and dust-free.
