Technology | what if the LED display module fails? Why does the module have color deviation?

No matter how high the cost and quality of outdoor LED display are, it is inevitable that there will be faults in the outdoor wind and rain, such as bad lights, local black screens and so on. So what if the LED display module fails? Why does the module have color deviation?

1.What if the LED display module fails?

Generally, the failures of LED display module mainly include the following:

（1） Large area black screen phenomenon of LED display screen

terms of settlement:

1. Check whether the power supply is connected.

2. Check whether the wiring is in good contact.

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

1. Front maintenance: use a screwdriver of the corresponding model to remove the screws fixing the mask, remove the lower cover and replace the lamp. After changing the lamp and sealing the colloid, restore the original mask and tighten the screws.

2. Back maintenance: remove the screws from the back with a screwdriver of the corresponding model, unplug the signal cable, and maintain a single module according to the front maintenance method, change the lamp or repair others.

（3） The LED display module is not on, and there is a black screen in the module

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

2. Check whether the transmission cable has poor contact. If the color of the whole module is confused or inconsistent (but there is signal input and correct picture), plug and unplug the cable again, or replace the tested cable.

3. Check whether there is a problem with the interface of the PCB.

2.What is the reason for the color deviation of the module?

1. Production process

After the wave soldering of the LED module, the LED position has been fixed, and it should not be moved at this time. However, because many companies do not have the protection conditions, they often collide and bend the LED lamp in the process of testing, repair, welding needle and bus, aging and transfer. Then conduct the so-called whole line before glue filling, which is easy to lead to the irregular staggering of the lights on the LED display screen, resulting in the color deviation of the module.

2. Power supply problem

When designing the LED display screen, we can't know what kind of materials to choose (including the selection and dosage of power supply), and there are problems in the power supply system, resulting in unequal power supply of LED modules.

3. Control system, control IC

Because LED display manufacturers do not have the design, development, testing and production capacity of LED display control system and control IC. Of course, the production of the display screen can not be guaranteed. What can only be done is to adjust various parameters.

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