LCD TV Service Manual

First: Do not turn off the TV without letting everyone waste electricity, but pay attention to balancing the impact of power on the life of the TV. We all know that the backlight is one of the most life-threatening components of all LCD TV accessories. It is very similar to the fluorescent tubes used in our homes. Therefore, its service life and lighting times are also very much related. Preheating and sputtering of high-voltage pulsed cathode electron materials at startup increase the lamp life. If you develop the habit of turning off the TV, the life of the lamp will be reduced to 1/2 the number of times a day.

Second: Avoiding long work does not conflict with the above considerations. In the case of super-long work, heat will accumulate inside the LCD TV's body, which is not too great a threat to other electronic components, but the LCD panel may be burned out, thus forming a large area of ​​dead pixels.

Third: Professional cleaning methods Due to static electricity, the screen surface of LCD TVs is very susceptible to dust. However, clean water is a very unwise cleaning method. The first is that the cleaning effect is general, and it is easy to leave water marks. What's more, the LCD is very vulnerable to permanent damage due to moisture (if water droplets infiltrate the screen, avoid electricity, and let the water slowly evaporate in a warm environment.

Fourth: Avoid scratching, twisting, or hitting the surface of the LCD screen Many people use their fingers to point and point at the screen. This doesn't matter to crt TVs, but it may cause fatal damage to LCD TVs. At the same time, you must look after your own kids and Their toys will cause direct damage to any impact or scribing of the LCD screen, and it is very likely that the whole screen will be scrapped.

Fifth: Still images can also damage the LCD screen Many LCD TVs now have digital photo viewing capabilities, but long-term display of a picture can cause damage to the LCD screen. When not using the machine for a long time, avoid making the machine display a screen, it is best to turn off the machine. Although the heat of LCD TVs has been reduced by a lot compared with CRT TVs, LCD TV temperature problems are more sensitive. Displaying a unified screen for a long time will cause fragile components to age. This may not burn the TV screen, but it is possible. It will make the TV more dead pixels. The dead pixel is a pixel that can only be white or black forever and cannot be repaired. In order to deal with this problem, some products are specially set to display the time of the still picture is too long, the TV automatically darkens the function to protect the LCD screen. Sixth: Water is a major killer of the LCD screen The LCD TV is very clear about the humidity, The air humidity is more demanding. If the humidity is kept between 30% and 80%, the liquid crystal can work normally. However, if the indoor humidity is higher than 80% (southern region), there may be condensation inside the LCD TV. The phenomenon occurs. The occurrence of this condensation phenomenon may cause leakage and short circuit in the LCD TV, and even cause serious damage to the TV.

Seventh: Do not arbitrarily disassemble the LCD TV without repairing it to the crt TV. The degree of mechanical precision of the LCD TV and the fragility of the core screen make the dismantling of the LCD TV a possibility to cause greater impact on the TV. Damage behavior, even if a small metal shavings fall off, can have serious consequences. At the same time, some of the components of the LCD TV backlight assembly will also have a high voltage of about 1000 volts, and this high voltage can also cause harm to the human body.