Curtain wall LED display plays a very important role in urban lighting, but many people do not know much about LED curtain wall screen, especially the fault detection method of LED curtain wall screen. Let me introduce the LED curtain wall screen to you. There are four ways to detect faults.

1. Short circuit detection method of LED curtain wall screen

Short circuit fault is a common problem of curtain wall LED light strips in architectural decorative lighting projects. The common detection method is to set the multimeter with alarm function to short circuit detection mode, and then check whether there is a short circuit problem on the LED curtain wall light strip screen. , should be solved as soon as possible; or use the method of connector pins and IC pins to detect, this LED curtain wall screen voltage detection method is simple and efficient. Note that no matter which method above is used, it should be operated with power off to avoid damage to the multimeter.

2, LED curtain wall screen voltage detection method

To detect the voltage of the curtain wall LED screen, you can first set the multimeter of the light bar screen to the voltage level, and then test the line that may be faulty, and compare the final value with the normal voltage value, so as to obtain the fault range of the LED glass curtain wall screen.

3, LED curtain wall screen detection resistance method

In the same way, the detection of the resistance of the LED curtain wall light strip is also to borrow a multi-meter first, and set the measuring instrument to the resistance gear detection. The method is to first detect the resistance value of the normal circuit board from a certain point to the ground, and then take the same value. The circuit board is tested at any point, and the obtained value is compared with the normal resistance value to judge the fault range of the light bar LED curtain wall screen resistance.

4, LED curtain wall screen diode voltage drop detection method

The voltage drop detection rule of the LED light bar screen is to set the multimeter to detect the voltage drop. When the current passes through, there will be a voltage drop on the pins. Usually, the voltage drops on the pins of integrated circuits of the same model are the same. We can judge the quality of the diode voltage drop value of the curtain wall LED display according to the pin detection results.

LED display manufacturer (Lianchengfa) Warm reminder: In order to ensure production safety and personal safety, the above operations must be carried out when the circuit is powered off.