Maintenance of large-screen LCD TV
Beautiful and expensive, it is not too much to describe a large-screen TV. The large-screen, wide-screen ratio and high-resolution TV revolutions dominated by LCD TVs have brought people excellent audio-visual enjoyment, but also brought some problems to people in maintaining TV, especially the "delicate face". LCD TV screens account for 60% -78% of the total TV cost. Once the screen is damaged and cannot be repaired, it can only be replaced in its entirety, but it is not a small fee.
The reason why the LCD TV screen is delicate is because of its special display principle. The core of the LCD liquid crystal display (Liquid Crystal Display) is composed of three layers, and the two substrates are filled with moving liquid crystal molecules.
The signal voltage directly controls the switching state of the thin film crystal, and the transistor is used to control the liquid crystal molecules. The liquid crystal molecules have obvious optical anisotropy, and can modulate the light emitted from the backlight tube to realize the display of the image. Since the main light-emitting medium is liquid, the liquid crystal panel has the characteristics of lightness, thinness, and softness, and is also easily damaged. When using the LCD TV, you must pay attention to the following aspects:
Avoid scratching, twisting or hitting the LCD screen surface
Many people use the habit of pointing their fingers at the screen, which is not important for CRT TVs, but it may cause fatal damage to LCD TVs. At the same time, they must take care of their children and their toys, any impact, scratch on the LCD screen Will bring direct damage, and it is very likely that the entire screen will be scrapped.
Still pictures can damage the LCD screen
At present, many LCD TVs have digital photo browsing function, but the display of a picture for a long time will cause damage to the LCD screen. When not using the machine for a long time, avoid making the machine display a one-click screen. It is best to turn off the machine. Although the heat of the LCD TV has been reduced a lot compared to the CRT TV, the temperature of the LCD TV is more sensitive. Displaying a unified picture for a long time will cause the fragile components to age. This may not necessarily burn the TV screen, but it may be Will cause more dead pixels on the TV. Dead pixels are pixels that can only be white or black forever and cannot be repaired. In order to cope with this problem, some products have specifically set the function of displaying still images for too long and the TV automatically dimming to protect the LCD screen.
Choosing the recommended resolution is a kind of protection for LCD TV
At present, the resolution of some LCD TVs can be adjusted, but using the LCD TV at the recommended resolution is a protection of the LCD screen. The display principle of the LCD TV is completely different from that of the CRT, and it is a direct pixel-to-pixel display method. Only under the recommended display resolution can the LCD TV image the best picture.
Clean LCD TV is a kind of knowledge
Long-term use will cause dust on the LCD TV screen. Be careful when scrubbing the screen. If there is only some dust on the screen, it is recommended that you gently wipe off the dust with a slightly damp soft cotton cloth. If the screen is dirty, you can use a special cleaner. Use rough or chemical fiber fabric, which will damage the protective layer of the screen. It is absolutely forbidden to spray or pour any liquid on the surface of the LCD screen. Wipe with moderate strength.
Water is a big killer of LCD screen
The LCD TV is very sensitive to humidity, and it has strict requirements on air humidity. If the humidity is maintained between 30% and 80%, the LCD can work normally, but if the indoor humidity is higher than 80% (Southern region), Condensation may occur inside the LCD TV. This condensation may cause leakage and short circuit of the LCD TV, or even burn the TV seriously. There is a slight condensation inside the LCD TV. It is recommended that you return it to the manufacturer's repair department for maintenance and repair, and dry it yourself. Remember not to directly shine the LCD screen with strong light, which will cause the screen to age. The best thing is that the screen should not be too wet to prevent moisture from damaging the screen.
Do not disassemble and repair the LCD TV without authorization
The CRT TV can be repaired by itself. The mechanical precision of the LCD TV and the fragility of the core screen make the disassembly of the LCD TV privately a behavior that may cause greater damage to the TV, even a small metal scrap The shedding may cause serious consequences. At the same time, some of the LCD TV background lighting components will also carry a high voltage of about 1000 volts. This high voltage can also cause harm to the human body. Unauthorized disassembly of the TV opportunity leads to the failure of after-sales service, which is often more than gains.
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