No matter how good the quality of a product is, it needs to be repaired. In addition to the quality of the product itself, its service life is also the most important thing to repair and maintain. It is expected that LED display screens will have problems just like other products. What we can do is to better detect the problem before it comes, and do the maintenance work as early as possible. So what are the maintenance and inspection methods of LED display screens, and how should users do a good job in the inspection of LED display screens? 1. LED display resistor detection method: For the LED display resistor detection method, we need to adjust the multimeter to the resistor level, first test the resistance from a certain point of a normal circuit board to the ground, and then test another piece Check whether the same point of the same circuit board is different from the normal resistance. If there is a difference, you will know the scope of the LED display problem, otherwise ignore it. 2. LED display voltage detection method: LED display voltage detection is to adjust the multimeter to the voltage level, and check the ground voltage at a certain point of the abnormally bad power circuit. Compared with the previous one, whether it is normal , In this way, it is convenient to clarify the ownership of the problem.
3. LED display short circuit detection method: The LED display short circuit detection method is to adjust the multimeter to the short circuit detection gear, so that it can detect whether there is a short circuit. If a short circuit is found, it should be dealt with immediately. The short circuit of the LED display is also a common fault of the LED display module. In addition, short-circuit detection should be carried out with the power circuit turned off to avoid damage to the multimeter.
4. LED display voltage drop detection method: The LED display voltage drop detection method is to adjust the multimeter to the diode voltage drop detection file, because all the ICs of the LED display are composed of many modules, so when it is used When there is current flow on a pin, there will be current on the pin. Under normal circumstances, the voltage drop on the IC pins of the same model is similar. For the maintenance methods of the above types of LED displays, we can keep them in mind, and carry out inspections without regular execution, so as to prevent damage to our LED displays, and can also extend the service life of our LED displays very well.
In this way, it can not only prolong its use time, but also save the following redundant budget expenditures. Because the after-sales maintenance service of some LED display manufacturers is only one to two years, if this after-sales maintenance time is passed and the maintenance is carried out again, additional charges will be charged. .