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Some common problems and solutions for LCD advertising machines
所属分类:Common Problem
发布日期:2014-04-20
点击率:194
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Q: The LCD screen of the LCD screen is black and shows "Signal out of sync range" or "OUT OF RANG". What is the reason?

A: When the signal from the microcomputer exceeds the display range of the display, the display detects that the abnormal signal stops working. The user can turn off the display first; then turn it on, then reset the output frequency of the microcomputer.

Q: The screen is heavily flickered due to the following possibilities

A: Please check if there is magnetic interference around; please check if the power supply voltage is stable; please check the display, graphics card driver; increase the refresh rate of 75HZ; if not, please go to the repair station to check.


Q: There is no display on the screen. The indicator on the front panel is blinking. What should I do?
A: Check if the signal cable connection between the monitor and the computer is secure, and check if the pin of the signal cable is broken or bent.

Q: Does the resolution of the display resolution not go up?
A: In most cases, it is a problem. First check if the driver of the graphics card and monitor is installed. Then check the graphics card and monitor according to the instruction manual to see if you can achieve the performance you want. If everything is ok, then the display is faulty and can only be contacted by the repair center.

Q: How do I clean the case?
A: Use a cotton cloth dampened with water, do not use any detergent, this will make the shell lose the special luster of the factory.

Q: When the LCD is turned on and off, there is interference on the screen. Is this normal?
A: This situation is caused by the signal interference of the display card, which is a normal phenomenon. This problem can be solved by adjusting the phase automatically or manually.

Q: When playing a large 3D game with LCD, the screen has obvious tailing phenomenon, and it feels very unsmooth. How can I solve this problem?
A: This is caused by the characteristics of the LCD and cannot be solved. Due to the long response time of the LCD, there are obvious tailings when running some 3D games (such as QUAKE3). However, this phenomenon is not obvious on LCDs with short response times.

Q: There is a black spot with a thumb on the LCD screen. What is going on?

A: The situation you reflect is largely due to external pressure. Under the pressure of external force, the polarizing plate in the liquid crystal panel will be deformed. This polarizing plate is like aluminum foil. It will not bounce itself when it is recessed. This causes the difference of the liquid crystal panel when it is reflected, so you will see it. In the dark part, this part is easy to find under the white screen. Generally, the size is more than ten square millimeters, which is the size of the thumb. This will not affect the service life of the LCD. Please pay more attention to it in future use. LCD screen.

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