signal signal Why can't I watch it?

Because the wires connecting the display to the host are not connected properly, you just need to plug the wires back in.

Computer LCD

Introduction:

Computer LCD, or LCD (Liquid Crystal Display), is a flat, ultra-thin display device, which consists of a certain number of color or black-and-white pixels placed in front of a light source or reflective surface. Liquid crystal displays are favored by engineers because of their low power consumption, and are suitable for battery-operated electronic devices. Its main principle is to stimulate the liquid crystal molecules with an electric current to produce dots, lines, and surfaces in conjunction with a back light tube to form a picture. Liquid crystal display is widely used in industrial control, especially some machine man-machine, complex control equipment panel, medical equipment display and so on.

How to use:

1. Avoid internal burnout of the screen

Previously mentioned the long time on the LCD monitor will reduce its life. So in order to avoid this kind of situation,

2. Maintain the humidity of the environment

Don't let anything with the nature of moisture into the LCD, if the moisture has entered the LCD, it is necessary to place the LCD in a warmer and drier place in order to let the moisture and organic compounds evaporate, and then turn on the power. Applying power to an LCD that contains moisture is capable of causing corrosion of the liquid crystal electrodes, which in turn can cause permanent damage.

3. Avoid unnecessary vibration

LCD can be regarded as the most sensitive electrical equipment, LCD contains a lot of glass and sensitive electrical components, so the screen is very fragile, try to avoid strong shock and vibration, strong shock is very easy to lead to the LCD screen as well as CFL unit damage. Be careful not to put pressure on the LCD display surface, the bad habit of pointing in front of the screen must be corrected.

4. Don't try to disassemble the LCD

One rule is to never disassemble the LCD, even after it has been turned off for an extended period of time, the CFL converter in the backlighting assembly may still carry a high voltage of approximately 1,000 volts, which is capable of causing serious personal injury. Therefore, never attempt to disassemble or alter the LCD display to avoid exposure to high voltage. Unauthorized repairs and modifications can cause the display to become temporarily or even permanently inoperable. In case of failure, it is recommended to take it to a specialized service station for repair.