What to do if the LED display is broken

What should I do if the LED display is broken? LED display maintenance method. During the use of LED displays, various faults will occur. Some are caused by static electricity, but some are not necessarily caused by static electricity. Therefore, when a fault occurs, how to repair it becomes the key. Research shows that 80% of LED display failures are caused by the following factors: AC power distribution harnesses, terminals, connectors, signal and low-voltage DC connection harnesses and connectors, switching power supply modules, fans, and plastic shell components. If these interfaces, cables, power supplies, and bottom shells are not selected properly, the LED display will result in overall or partial black screen, blurred screen, mosaic, no signal, etc. These are also very difficult problems to maintain. Liu Gong, an engineer at Shanghai Sansi, can also emphasize: Therefore, we pay attention to it during the production process and reduce the failure rate. Next, we will ask the after-sales service engineer of Shanghai Sansi Technology Development Co., Ltd. to tell you what should we do if the LED display is broken?

LED display maintenance method

1. Short circuit detection method, set the multimeter to the short circuit detection position. If there is evidence that the short-term phenomenon is short-term, it must be resolved immediately. In short, short circuit is a common phenomenon in LED display screens and modules. Some observers can detect the pins by listening to the pin headers of the IC. Short circuit testing should be performed to avoid electrical damage if operated. This method is the most commonly used method, simple, effective and efficient. More than 90% passed all detection methods of this test.

2. Resistance test resistance, test audio is redistributed to point A of the normal circuit board electrical system with another piece of the same, detect the normal power consumption of the same test circuit point and if there is a difference, if different systems and the scope of the problem.

3. Voltage, the test voltage audio is suspected to be at some points of the circuit voltage. Therefore, if a similar comparison is used, it can promote the normal range of the problem.

4. Voltage drop test part Diode test pressure drop, because many IC all the basic knowledge, only integrated unit miniaturization, so when the current passes through with the pin appointment it will stand up to the presence of voltage drop. In general, for pins that are so similar to IC pins and have such a poor pressure drop, compare the voltage drop values ​​in the circuit.