When you encounter a sudden black screen on the LCD module, 4 steps can help you quickly solve the LCD screen repair problem.

First, when the LCD screen is black, the cable connecting the screen to the computer must be tested for looseness. If the cable is loose, the display is in a signal interruption state and a black screen may appear.

Second, check whether there is any problem with the host computer and test whether the host computer wiring is loose. Check whether the computer keyboard display light is on. If the light is on, it means the host computer is not faulty.

Third, if the black screen of the LCD display is not caused by the host, check whether the LCD protection circuit is working due to high voltage or low voltage, and check whether the accelerator voltage is normal.

Finally, check the following parts that are prone to problems, such as whether the fuse is blown, whether the switch tube of the rectifier bridge is damaged, whether the current limiting protection resistor is burned out, etc. These parts can be seen from the blackening and other fault phenomena.

Of course, there are many reasons for a black LCD screen. This article only introduces some basic inspection methods. If these four points cannot be detected, then professional LCD repair and maintenance personnel need time to check. If you are a customer of SINDA DISPLAY and have similar problems, you can contact us at any time and we will provide you with professional after-sales technical support services.