Before I throw out the question, I think you should know about the components of an outdoor LED display screen. The outdoor LED display screen is a single unit, but it is also made up of many parts, such as the chips, the power sources, the console and the connection ports.
The components of the LED screen:
Cabinet: the LED cabinet is a modular unit for assembling LED screens. The cabinet is assembled into a display screen. The LED cabinet can be customized according to size and material.
Structural chassis: It is the frame that accommodates other components of the cabinet. It can be manufactured in different materials according to specific conditions.
Power supply: It can convert and adjust the voltage of the grid to supply power for other electronic components.
Data card: receives the image data that will be sent from each cabinet and distributes it to all modules of the cabinet.
Data circuit: A set of wiring used to connect the data card to the LED module and to connect the cabinets.
Power circuit: A set of wiring used to connect power to other electronic components of the cabinet and to interconnect all cabinets with the electrical network.
what do we have now？
Fortunately, we now have a unified PC control panel and are able to test each one individually.
So if there is a problem with a component, we first need to check out what the problem is and then address the local problem without damaging the integrity of the whole.
We all know that LED display screens have a lifespan, usually between 80,000 and 120,000 hours.
Improper use of outdoor LED display screens or harsh environments can shorten their life.
As you can see, both external and internal factors can influence the lifespan of an LED display.
Therefore, we need to check and maintain the display effect of LED displays from time to time.
What if the LED display is oxidised by moist air when used outdoors, resulting in device failure？
The first step，we should check out whether the device has failed instantly due to a breakage of the outer wrap and the vapour entering the device through the gap, which is often referred to as a “dead light“.
In general, LED chips are encapsulated in epoxy resin and are less susceptible to erosion.
So we have to check in advance if we encounter bad weather during use, regularly maintain the coating on the surface of the LED display and welding points, and repair the material wrapped around the chip to avoid loosening of the global resin and shedding of internal devices.
What should I do if there are obviously contour lines in the low-grey parts that are more sensitive to the human eye in the viewing angle?
Grayscale is a range of monochromatic tones from black to white. Grayscale images only contain grey tones, and there is no colour distinction.
As usual，the first step we should think about it，why would this happen？
Due to there is a gap between the luminance value that the greyscale of the image itself wants to express and the actual luminance value expressed, and such a gap is recognised by the human eye, which sees the obvious contour lines.
So, there is the technology upgrade and update – 18bit+ technology.
18bit+ technology enables a 4x increase in greyscale from the original, with more detailed grey gradients for low light and high grey.
The other is to solve the problem of inaccurate grayscale through the image quality engine. Fine greyscale technology uses a light gun to measure each greyscale, in turn, to find out where the problem lies, solve them one by one, and reach the ideal level.
What if a small part of the LED display shows abnormal colours, i.e. incorrect colours, what can we do about it?
I wonder if buyers of outdoor LED display screens have noticed that the images or videos we want to show to customers，after moving from an LCD screen computer to a large LED screen，the source of colour will show some deviation. It may also be a poor contact caused by a loose video processor interface.
But，why？ Why would this problem happen？ So we have to go back to the roots.
This is because most imaging devices on the market record imaging in accordance with the BT709 colour gamut standard. In order to record colour information, internal devices will have a certain point of deviation during collection.
So, how do we solve the problem of colour deviation?
To solve this problem，some of us researched and developed the technology of colour management for LED displays.
As with the second question, first use a light gun to measure the actual color gamut of the LED display, perform color correction through the algorithm set by the light gun, and finally improve the color rendering effect through the image quality engine.
I have summarised these problems and wonder if they occur to you in the course of use?
All we can do is to identify and solve problems, maintain the sense of the use of the product and improve the customer experience.
Off-topic remarks：
No matter what type of LED display screen you have，outdoor or indoor，all require daily maintenance.
Including the fixity check of the components in the box, bad products check and timely replacement, LED display cleaning.
For safety reasons, also to do the power supply system check, to avoid line failure caused by a number of unnecessary injuries.
Problems with any of the components may affect the life of the led display, so be sure to choose a manufacturer you can trust, choose durable materials, and maintain the product from time to time during use in order to maintain a stable product experience.
Otherwise，outdoor LED display screens are eroded by ultraviolet rays all year round, and the LED colloids and bracket materials will also be affected.
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