With the progress of LED display technology, full-color LED display can be seen almost everywhere in our life. Whether it is outdoor large-scale sky screen or indoor high-definition large screen with small spacing, full-color LED display is undoubtedly one of the most widely used displays at present. However, it is an electronic product after all, and its service life and life are always limited. After a long time of repeated use, it is inevitable that a series of problems will occur, Therefore, in daily use, maintenance is very necessary. Good maintenance can make the LED display maintain its excellent display performance, and also effectively extend the service life of the LED display. Today, let's follow the small editor to see how to detect the fault of the full-color LED display screen. You can do it yourself:

Indoor full color LED display

1. Voltage detection method

The voltage detection method of LED display screen is to adjust the multimeter to the voltage level, detect the voltage to the ground at a certain point of the problem circuit and compare it with the previous one. If there is an obvious difference, it is a problem;

2. Resistance detection method

Mainly for the resistance inspection of LED display screen, we set the multimeter to the resistance level, first check the resistance value from one point to another point of the normal circuit board, and then check whether the resistance value of the same point of another same circuit board is different from the normal resistance value. If there is a significant difference, we can lock the fault range. If there is no difference, it can be ignored;

LED display resistance detection

3. Pressure drop detection method

The voltage drop detection of the full-color LED display is to set the multimeter to the voltage drop detection gear. All ics of the full-color LED display are composed of many components. When the current flows, there will be a voltage drop on one pin. Under normal circumstances, the voltage drop on the IC pin of the same model is similar;

4. Short circuit detection method

The short-circuit detection of full-color LED display is to adjust the multimeter to the short-circuit detection gear to detect whether there is a short-circuit. If there is a short-circuit phenomenon, it needs to be solved immediately. The short-circuit phenomenon of full-color LED display is a relatively common LED display module fault in the industry, and the short-circuit detection should be carried out when the circuit is cut off, otherwise the multimeter will be damaged;

LED display short circuit detection

The above are the four common fault detection methods for full-color LED display. I hope this article can help you. In the future, with the continuous improvement of LED display technology, the fields involved will be more and more extensive. If you encounter a display fault in the process of use and cannot find the cause or solve it after detection, you can contact the manufacturer for remote guidance or on-site maintenance, Timely solve the problem, and do not disassemble the components of LED display without permission.