There are various reasons that can cause damage to outdoor LED displays during use, requiring waterproofing, dustproofing, heat dissipation, corrosion resistance, electrostatic protection, lightning protection, and protection from small animals, along with regular maintenance and inspection. Generally, the main maintenance methods for outdoor LED displays are "cleaning, tightening, appearance inspection, and calibration."

Cleaning the internal box of outdoor LED displays is crucial, especially for displays with lower protection levels, as dust in the atmosphere can enter the equipment through ventilation holes, accelerating wear and even causing damage to components like fans. Dust can also settle on the surface of internal control devices, reducing thermal conductivity and insulation performance. In humid weather, dust absorbs moisture from the air, leading to short circuits, and over time can cause mold on PCB boards and electronic components, resulting in a decline in technical performance and malfunctions. Therefore, while cleaning the display equipment may seem simple, it is actually a very important aspect of maintenance. When cleaning the dust inside the display, remember to disconnect the power and operate carefully.

Cleaning the surface of the LED electronic display After long-term use, the surface of the display needs to be cleaned of accumulated dust and impurities. First, consider purchasing a high-quality cleaning kit, which typically includes cleaning solutions such as electrolytic liquid, high-purity distilled water, and anti-static liquid, which can effectively clean dust and other stains from the LED screen. Some believe that plain water can also be used without affecting the outdoor LED display. However, the cleaning effect of plain water is relatively poor, and dust will reattach after cleaning. It is also important to note that water should never be sprayed directly onto the screen; instead, spray a small amount of cleaning solution onto a cleaning cloth and gently wipe in the same direction. Before cleaning, the power cord should be unplugged. Finally, use a vacuum cleaner to remove any water droplets and marks left after wet cleaning, ensuring the display cover is clean and dust-free.

Tightening of outdoor LED displays Large-scale LED displays are high-power devices, and after running for a considerable time, the wiring terminals in the power supply section may loosen due to repeated starts and stops and temperature changes, leading to poor contact and potential overheating that could ignite nearby plastic components. Signal wiring terminals may also loosen due to temperature fluctuations and moisture erosion, resulting in poor contact and subsequent equipment failure. Therefore, it is essential to regularly check the tightness of the connections in the equipment. When adjusting the fasteners, apply even and appropriate force to ensure they are secure and effective.

Appearance inspection of outdoor LED displays refers to visually or measurably observing and checking the external condition of the display equipment. This includes checking for any damage or cracks on the surface, ensuring that communication and power distribution cables are functioning normally. For equipment with high protection levels, although high-reliability components and connectors are used, the sealing becomes a critical factor, so it is even more important to regularly check the integrity of the sealing areas. For outdoor screens, the surface paint and rust condition of the steel structure should also be inspected regularly. Additionally, the heat dissipation and lightning protection equipment of the display should be maintained periodically.

Calibration of outdoor LED displays The theoretical lifespan of an LED display is 100,000 hours, but in practice, a display may start to deteriorate in uniformity and become uneven after about 5,000 to 10,000 hours of operation, reducing its commercial value. At this point, point-by-point calibration should be considered.

Preparations before calibrating the LED display:

1. Clean the LED display to remove dust and stains from the lamp surface and cover, avoiding any impact on brightness. If the cover needs to be replaced, ensure that the color matches the previous one; otherwise, the display may be affected, especially during the day, and calibration may not improve the situation significantly.

2. Replace malfunctioning modules: This includes modules with non-functioning lights, many dead lights, abnormal scanning, or overall dim lights (possibly due to incorrect resistance), as well as issues with wiring or connectors affecting the display, etc. Ensure that the final display, scanning, and image are normal, with no dim, always-on, or continuously lit phenomena.

3. Upgrade the receiving card: If the currently used receiving card does not support calibration or does not have enough load points, an upgrade is necessary. Since upgrading the receiving card carries the risk of dead cards, customers should contact the control system company in advance for upgrades and related processing.

Finally, during operation, the operator of large-scale displays should also pay attention to inspections, observing for any unusual sounds, smells, or lights. If the display has not been used for a long time, it should be inspected before being put back into use. It is worth noting that surface-mounted LED displays that have not been used for a long time may experience a decline in reliability, so it is recommended to use them for at least one hour each week to reduce moisture damage to the display.

Proper operation of LED displays also includes playing suitable and appropriate programs during use. For example, due to the light decay characteristics of LED lights, playing the same image for an extended period can lead to significant local light decay; additionally, playing programs with high brightness for a long time can cause various components to operate at full load, accelerating aging. From an economic perspective, this also consumes a large amount of electricity, increasing operating costs, so everyone should pay attention to this during use.