With the increasing application of LED display screens, it can be seen almost everywhere in life. Whether it is outdoor advertising large screens, indoor high-definition large screens, small-pitch LEDs, etc., LED display screens can undoubtedly be said to be the most used at present One of the big screen products.
Full color led display
However, any product will have its service life and best use period. The same is true for LED displays. After repeated operations, problems of this or that kind will inevitably occur. At this time, we need to solve and maintain them. Continue to serve us normally, and then, Huabang Ying Optoelectronics will share with you several maintenance methods of LED display screens, I hope it will be useful to you.
1. Screen resistance detection method
For the resistance detection method of the display screen, we need to adjust the multimeter to the resistance range, first detect the resistance value of a certain point of a normal circuit board to the ground, and then detect the same point of the same circuit board to test whether the resistance value is normal There are differences. If there are differences, you will know the scope of the LED display problem, otherwise, ignore it.
2. Display voltage detection method
The voltage detection of the display screen is to adjust the multimeter to the voltage range to detect the voltage to the ground at a certain point of the circuit that has a suspicious problem, and compare it with the previous one, so that the problem can be easily determined.
3. Screen short circuit detection method
The short-circuit detection method of the display screen is to set the multimeter to the short-circuit detection gear, so that it can detect whether there is a short-circuit phenomenon. If a short circuit is found, it should be solved immediately. The short circuit of the display is also the most common LED display module failure. in addition! The short-circuit detection should be performed when the circuit is powered off to avoid damage to the multimeter.
4. Display pressure drop detection method
The voltage drop detection method of the display screen is to adjust the multimeter to the diode voltage drop detection gear, because all the ICs of the display screen are composed of many single components, so when there is a current on one of its pins, it will be induced There is a voltage drop on the feet. Under normal circumstances, the voltage drop on the IC pins of the same model is similar.
In the future, with the continuous development and improvement of LED display technology, the fields involved will become more and more comprehensive. If your LED display has a problem, the best way is to contact the relevant manufacturer or supplier. After-sales service, solve the problem in time, and disassemble it by yourself to avoid unnecessary losses.
