What should I do if the outdoor LED display fails?

What should I do if the outdoor LED display fails? As we all know, LED display screens are divided into indoor display screens and outdoor display screens. Indoor displays need to be moisture-proof, while outdoor displays must not only be moisture-proof, but also waterproof. If the waterproof and moisture-proof work is not in place, it is very easy to cause a short circuit on the display screen, and may even cause a fire. Therefore, in this season when heavy rain is faster than flipping books, waterproof and moisture-proof is an indispensable task for outdoor LED displays.

For indoor displays, moderate ventilation is required first. Moderate ventilation can help the water vapor attached to the display evaporate quickly and reduce the relative humidity of the indoor environment. However, avoid ventilation in some windless and humid weather, which will increase the indoor humidity; secondly, place a desiccant indoors to reduce the moisture in the air through physical moisture absorption. Or turn on the air conditioner to dehumidify. If the air conditioner is installed in the space where the display is installed, the air conditioner can be turned on to dehumidify in humid weather.

The environment of the outdoor LED display itself is more complicated than the indoor environment, and indoor methods can be used to prevent moisture. However, outdoor display screens must not only consider moisture-proof issues, but also do daily maintenance such as waterproofing, especially during the rainy season. Therefore, a good sealing installation can help the display screen reduce the risk of water ingress, regularly clean the dust attached to the inside and outside of the display screen, and also help the display screen to dissipate heat better and reduce the adhesion of water vapor.

At the same time, in the later process, the high humidity makes the PCB, power supply, power cord and other parts of the LED display easily oxidized and corroded, resulting in failure. Therefore, it is required to carry out anti-corrosion treatment on the PCB of the LED display. For example, its surface is painted with three kinds of yellow paint and so on. The power supply and power cord should use high-quality accessories. The welding part is the most prone to corrosion, so pay attention to protective work. In particular, it is proposed that the frame is easy to rust, and it is best to do anti-rust treatment.

Finally, whether it is an outdoor led display or an indoor led display, the most effective way to prevent moisture from damaging the function of the display is to use it frequently. The display screen will generate some heat and evaporate some water vapor when it is in working condition, thus greatly reducing the possibility of short circuit due to moisture. Therefore, the effect of humidity on a display that is frequently used is much smaller than that of a display that is not frequently used.

First of all, we must figure out the specific purpose. This is an advertising screen, so the purpose is advertising display and outdoor drainage. After the purpose is determined, we need to choose the model. Here is a formula, P=L/1700, where P is the dot pitch, in mm, and L is the closest viewing distance, in mm; that is to say, the P1.6 LED display is suitable for viewing at a distance of 2.7m. This formula roughly calculates the required model number. The prices of different types of leds vary greatly. So what are the factors that affect the price of LED advertising screens?

1. The light-emitting chip (lamp bead) is the main influencing factor.

2. For the display screen model, generally the smaller the dot pitch, the higher the price, for example, P6 is higher than P10.

3. Application scenarios, for displays with the same dot pitch, outdoors are generally more expensive than indoors, and outdoors should have technical requirements such as moisture-proof and dust-proof.

4. The larger the LED display area, the higher the price.

5. The price of other materials such as power supply, cabinet and other accessories made of LED display is affected. For example, ordinary die-casting aluminum LED cabinet is more durable than sheet metal cabinet, but the price is correspondingly higher.

   No matter how high the cost of the outdoor LED display is and how good the quality is, failures will inevitably occur in the outdoor wind and rain, such as broken lights and partial black screens. So what should I do if the led display module fails? Why does the module appear color cast? You will understand after reading the following.

6. What should I do if the LED display module fails?

   Under normal circumstances, the failures of the led display module mainly include the following types:

   (1) LED display large area black screen phenomenon

   Solution:

7. Check whether the power is connected.

8. Check whether the cable is in good contact.

   (2) The led display has a bad point (out of control point)

9. Front maintenance: Use a screwdriver of the corresponding type to remove the screws that fix the mask, take off the mask, and replace the lamp. After changing the lamp and sealing the colloid, restore the original mask and tighten the screws.

10. Rear maintenance: Use a screwdriver of the corresponding type to remove the screws from the rear, unplug the signal cable, and follow the front maintenance method to maintain a single module, replace the lamp or overhaul others.

    (3) The led display module does not light up, and a black screen appears on the module

11. Check whether there is a problem with the power supply.

12. Check whether the transmission cable is in poor contact. If the color of the whole module is confused or inconsistent (but there is a signal input and a correct picture), re-plug the cable, or replace the tested cable.

13. Check whether there is any problem with the interface of the PCB board.

14. What is the reason for the color cast phenomenon in the module?

15. Production process

    After the wave soldering of the led module, the position of the led has been fixed, so it should not be touched at this time. However, because many companies do not have the protection conditions, they often collide and bend the LED lights during the process of testing, repairing, soldering pin headers, aging and transferring processes. Then do the so-called whole row before glue filling, which will easily cause the lights on the LED display to be tilted irregularly, resulting in color cast of the module.

16. Power supply problem

    When designing the LED display, it is impossible to know what kind of material to choose (including the selection and dosage of the power supply), and there is a problem with the power supply system, which leads to uneven power supply of the LED module.

17. Control system, control IC

    Because LED display manufacturers do not have the design, development, testing and production capabilities of LED display control systems and control ICs. Of course, the display screen produced cannot be guaranteed, and the only thing to do is to adjust the parameters.

18. Optimize the concept of LED display experience in terms of function, and can perform remote configuration modification while remotely monitoring the device status;

19. Quickly identify the display type, version and device number, and display the corresponding information on the interface;

20. Be able to input and configure information such as IP address and location, and display it;

21. Online status and fault status monitoring statistics and display of the whole network display;

22. Equipment resource monitoring, monitoring such as backlight status, power status, temperature, horizontal resolution of input signal, vertical resolution of input signal, non-displayed analog input source, serial interface and other system information;

23. Customize the batch adjustment to set the power-on time of the display, backlight, and power supply, and an alarm will be issued when the timeout expires;

24. Custom batch adjustment setting temperature, backlight limit value, over limit alarm;

25. Monitor and adjust the brightness, contrast, zoom mode and definition of the display in batches by customizing;

26. Statistical display, backlight, power supply online number, fault number and undisplayed input source and other data;

27. The system state saves historical records and saves all settings since the last power-on;

28. Support distributed deployment management. Monitor all the customer’s network equipment, including the first-level classification to the second-level branch equipment;

29. Permissions are distinguished according to the login account. The permissions range from provincial bank accounts, branch accounts, sub-branch accounts, and outlet accounts. After logging in, you can only see the equipment within your authority;

30. The factory administrator and the person in charge of customer operation and maintenance can receive alarm information through WeChat, SMS, email, etc.