LED displays are classified by industry or belong to electronic products. As long as it is electronic products, in the use of the process will inevitably appear fault. So what are the failures of the LED display? Contact with LED display friends know that LED display is made of LED modules. As mentioned above, LED display screen is an electronic product, so its basic structure is the display surface (lamp surface), PCB (circuit board), control surface (IC element surface).
When it comes to maintenance tips for LED displays, let's talk about common faults first. Common faults are: local "dead light", "caterpillar", local color block missing, local black screen, large area black screen, local garbled code, etc.
Local "broken light" problem Local "dead light" refers to the LED display on the light surface of one or several lights do not work. This kind of without light is divided into full-time without light and partial color without light. It's usually the lamp itself. Either moisture or damaged RGB chip. Our maintenance method is very simple, is to use the spare LED lamp beads provided by the manufacturer to replace. The next tools to use are tweezers and a heat gun. After replacing the spare LED lamp bead, use the Test card again. If there is no problem, it has been repaired.
Lack of local color patches
Friends familiar with LED display must have seen such a problem, is in the LED display normally play, there will be a different color block of small square, square. This kind of problem is usually caused by the color IC behind the color block. Now, the solution is to replace it with a new IC.
Partial black screen and large black screen
Usually we refer to the black screen when the LED display is playing normally, one or more LED modules show the phenomenon that the whole area is not bright, while a few LED modules are not bright in this area, which is called local black screen, and more areas are called black screen. It's a big black screen. When this phenomenon occurs, generally we first have to consider the power factor. Generally check whether the LED power indicator is working properly. If the LED power indicator is not on, the power is probably damaged. It can be replaced with a new power supply corresponding to the power supply. Also check whether the LED module power cable of the LED display corresponding to the black screen is loose. In many cases, rewinding the wires can also solve the black screen problem.
Partial garbled code
The problem of partial garble is relatively complex, which refers to the phenomenon of random and irregular color blocks flashing in local areas when the LED display is playing. When such problems occur, we usually first check the connection of the signal line. Check whether the network cable is burnt or loose. In maintenance practice, we found that aluminum magnesium wire is easy to burn out, while pure copper wire has a longer life. If there is no problem in the whole signal connection, and then swap the faulty LED module with the adjacent normal playback module, you can basically judge whether it is possible that the LED module corresponding to the abnormal playback area is damaged. The cause of the damage is mostly IC problems. , maintenance will be complicated.