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Outdoor LED display routine maintenance notes

2015.11.26

Many reasons can cause outdoor LED display damage; LED displays need to be waterproof, dust proof, guarded against heat radiation, corrosion proof, anti - static, lightning protected, anti - small animals, and consist of regular maintenance and repair. Generally speaking, outdoor LED display maintenance mode is clean, fast, inspects appearance and provides correction.

Outdoor LED display clean 

1.   Cabinet internal cleaning

For lower IP protection of the LED display, especially for outdoor LED displays, the atmospheric dust from the ventilation holes into the device will accelerate wear and tear damage from the fan. The dust will fall inside the LED display control device surface, reducing thermal and insulating performance. In the event of wet days, gas dust absorption of moisture in the air can cause the circuit to short, and over a long period of time can also lead to PCB and electronic elements of mildew, resulting in equipment failure and technical performance decline. The LED display equipment cleaning works seamlessly and is simple, but it is very important to continue the maintenance work. When cleaning the dust inside the LED display screen please be careful and cut off the power supply first.

 2. Screen surface cleaning

LED displays needed cleaning from the dust after long-term operations. Consider the purchase of a better-quality cleaning solution, such as the general electrolyte, high purity distilled water, anti-static liquid, etc. They can effectively clean the dust and other dirty marks on the LED screen.

 

    Outdoor LED display fastening

Large scale LED displays are high power consumption equipment. Running for quite a long time, due to repeated start stop and run, part of the power supply terminal will cause the loose virtual connection. Serious heating will ignite the plastic elements and will also ignite due to changes in environmental temperature. Cold and loose moisture or erosion resulting in poor contact can also occur from outdoor occurrences, subsequently leading to device failure. Therefore, it is necessary to often check equipment connections for every fastening piece to ensure that it is effective. 

   Outdoor LED display screen inspection

Inspections observe the appearance of the display device to do a visual assessment of the equipment, which includes any outside surface crack damage and whether the power distribution communication cable line is normal for example. For high IP protection devices, although the adoption of the high reliability of the components and connectors, but resulted in the closed has become a key factor. We must regularly check seal intactness for steel structures for outdoor screens to check the surface paint and corrosion. At the same time, it should be regularly on the display the heat radiating lightning protection equipment for maintenance.

 

    Calibration of an outdoor LED display

An LED display’s theoretical life expectancy is 100,000 hours, but in fact, an LED display in the operation of about 5,000 to 10,000 hours later will be even worse and the commercial value will be reduced. At this time we need to calibrate one point at a time.

 

    Preparations before calibration the LED display screen

 

1、 Clean the LED display, remove the dust and dirt on the face and face mask, and avoid the influence of the light. If you need to change the mask, please ensure that the color of the mask is consistent with the original to improve the correction, otherwise it will be affected.

2、Replace the bad module such as part of light that does not shine. Many dead lights scanning is not normal, the whole light too dark (may be the resistance is wrong), flat cable or socket problem affect the LED display, and so on. To ensure that the final LED can be displayed, scan the picture to see if its normal, if there is no darkness, Chang Liang, and even the phenomenon of light and other phenomena can be.

3、 Upgrade the receiver card: You need to upgrade the receiver card if it does not support the calibration or its load capacity is not enough. Upgrading the receiver card has risk so the customer needs to contact the control system company to upgrade and process this correctly.

 

Finally, large-scale displays in control of the operator should pay attention to the inspection, including any peculiar smells, different light phenomena, and the display not operating for a long time. It is worth noting is that surface mount LED display screen for a long time, not to use can lead to reliable performance degradation, a week recommended the use of 1 hour above and reduce tidal erosion of the display screen.




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