What are the black screens of outdoor advertising screen?
Time:2022-07-03
Views:77
1、 What are the black screens of outdoor advertising machines?
First: it is necessary to confirm whether the mains power supply of the machine is normal;
In some cases, it is because the power supply terminal of outdoor equipment trips or other things disconnect the power supply. However, when the user sees that the screen does not display normally, he will feed back that the machine is blank. This situation is very easy to deal with. Find the power-off point, coordinate and communicate, and then power on the machine to restore normal use.
Second: check the screen display to see if it is caused by backlight;
Another part of the situation is that the constant current plate used for the equipment has a long service life, or the high-intensity LCD screen fails, resulting in regular local backlight. This phenomenon will also mislead users to report the black screen problem to you. This problem may be caused by poor contact of the backlight power supply line or the failure of the constant current board. There are two possibilities that need to be replaced. Deal with them accordingly.
The third kind: the main board fails, causing the screen not to light up;
Another part is that the screen does not light up due to the failure of the motherboard, and there is no screen display, but the playing sound is normal, and the signal of the motherboard driving the screen to light up is not available, resulting in the screen not working, which will also make the user feedback the black screen problem. This problem can be solved immediately by dealing with the motherboard.
The fourth kind: design defects of unprofessional manufacturers;
The other is the so-called black screen phenomenon in the industry, that is, due to the unprofessional manufacturer, the heat dissipation system is not in place when designing the whole machine. As a result, the heat inside the equipment cannot be discharged outward, but accumulated inside. The temperature is too high, exceeding the upper limit temperature of liquid crystal molecules on the LCD screen, and irregular black screen phenomenon appears on the screen. Such problems should be solved by adjusting the fan speed or setting the temperature. If it still fails to be solved, the production machine can be replaced. It is recommended to choose a professional outdoor advertising machine manufacturer with guaranteed quality.
The fifth is related to the use and setting time;
Some users set the machine to work from the morning to noon and start it at about 3-4 PM. However, due to the temperature at noon, the equipment did not work and the internal heat dissipation system did not work, resulting in high internal temperature. When starting up in the afternoon, the LCD screen cannot work normally due to high temperature, resulting in black screen phenomenon. All our suggestions are to keep the equipment working during the day, and the cooling system will ensure the normal operation of the whole equipment.
The above basically lists all kinds of situations in which "black screen" occurs. Although small problems are occasionally encountered, the probability of outdoor machines is very small. Unless you use non professional manufacturers, Shenzhen geometric Display Technology Co., Ltd. focuses on the R & D, design, production and sales of outdoor LCD devices, and provides you with quality assurance, high-quality solutions, new appearance designs, etc.
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