Four detection methods for LED curtain wall screen failure

LED curtain wall screen is a common decorative material for building urban building lighting project. Its appearance is hollow strip shape, which has better light transmission, ventilation and lighting effect. It is also the high-end outline of glass curtain wall building and wall decoration. Display products, so LED light bar screen can also be called LED hollow screen, LED curtain wall screen and so on. Let the glass curtain wall lighting manufacturers to introduce you to the four detection methods of LED curtain wall screen failure.

1. LED curtain wall screen short circuit detection method

Short-circuit fault is a common problem in curtain wall LED strips in architectural decorative lighting projects. The general detection method is to set the multimeter equipped with alarm function to the short-circuit detection mode, and then check whether the LED curtain wall strip screen has a short-circuit problem. It should be solved as soon as possible; or the method of connecting the connector pin and the IC pin, the LED screen wall voltage detection method is simple and efficient. Note that no matter which of the above methods is used, it should be operated in the event of a power failure to avoid damage to the multimeter.

2, LED curtain wall screen voltage detection method

To detect the voltage of the LED screen of the curtain wall, the multi-meter of the light bar screen can be set to a voltage file first, and then the circuit that may be faulty is detected, and the final value is compared with the normal voltage value, thereby obtaining 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 LED screen wall bar resistance is also to first borrow the multimeter, and the measuring instrument is set to the resistance file detection by first detecting the resistance value of the normal circuit board from a certain point to the ground, and then taking the same The circuit board is tested at any point, and the obtained value is compared with the normal resistance value to determine the resistance fault range of the LED strip wall panel.

4, LED curtain wall screen diode drop detection method

The voltage drop detection rule of the light bar screen diode is to set the multimeter to detect the voltage drop file. Since the integrated circuit of the LED light bar screen is composed of several miniaturized unit parts, the wiring of the internal circuit and the peripheral circuit of the chip has When the current is passed, the voltage drop will occur on the pin. Generally, the voltage drop on the integrated circuit pins of the same model is the same. We can judge the voltage drop value of the led display LED of the curtain wall according to the pin detection result. Note that the above operations must be performed with the circuit powered off.