By Sally | 19 August 2019 | 0 Comments
How to solve the problem of sudden black screen
In this era of computer popularity and one computer per person, I believe that many people should encounter such a situation. So what should we do to repair the LCD screen with a sudden black screen?
First, when the liquid crystal display screen is black, it is necessary to detect whether the cable connecting the screen to the computer is loose. If the cable is loose, the display is in a signal-interrupted state and a black screen may appear.
Second, check if there is a problem with the host and test if the host line is loose. Check if the computer keyboard indicator lights up. If the indicator is lit, it indicates that the host is not faulty.
Third, if the black screen of the LCD display is not caused by the host, check if the LCD protection circuit works due to high voltage or low voltage and check if the accelerator voltage is normal.
Finally, the following problems that are prone to problems are examined, such as whether the fuse is blown, the rectifier bridge is damaged, and the current limiting resistor is burnt out. These components can be seen from blackouts.
Of course, there are many reasons for the black screen of the LCD screen. We introduce some basic inspection methods. If these four points cannot be detected, then you need professional LCD maintenance and repair personnel. If you are a customer of our company and have similar problems, please feel free to contact us and we will provide you with professional after-sales technical support services.
First, when the liquid crystal display screen is black, it is necessary to detect whether the cable connecting the screen to the computer is loose. If the cable is loose, the display is in a signal-interrupted state and a black screen may appear.
Second, check if there is a problem with the host and test if the host line is loose. Check if the computer keyboard indicator lights up. If the indicator is lit, it indicates that the host is not faulty.
Third, if the black screen of the LCD display is not caused by the host, check if the LCD protection circuit works due to high voltage or low voltage and check if the accelerator voltage is normal.
Finally, the following problems that are prone to problems are examined, such as whether the fuse is blown, the rectifier bridge is damaged, and the current limiting resistor is burnt out. These components can be seen from blackouts.
Of course, there are many reasons for the black screen of the LCD screen. We introduce some basic inspection methods. If these four points cannot be detected, then you need professional LCD maintenance and repair personnel. If you are a customer of our company and have similar problems, please feel free to contact us and we will provide you with professional after-sales technical support services.
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