显示器维修2（Display maintenance 2）.doc

显示器维修2（Display maintenance 2） Now the computer master DIY played with the host computer can be said to be hundreds of times, without the slightest fear. But if theres something wrong with the monitor, Im sure most people will be discouraged. This is because the maintenance of the display requires not only the expertise of electronic technology, but also the experience of display maintenance, otherwise, the light will cause the expansion of the fault surface, and the serious person will pose a threat to personal safety. So, are we not able to do it ourselves? This is not the case, the author thinks that some common fault is able to display yourself out, if you are interested, please prepare electric iron, tin suctioner, pointer multimeter and other commonly used tools, let us work together to learn some knowledge of display maintenance! Preliminary knowledge: most of the monitors used today are cathode ray tube displays (commonly known as CRT). What Im talking about here is the maintenance of this monitor. The circuit structure of display can be divided into the following parts: switching power supply, field scanning part, channel part and control circuit part. The main problem of the display is the switching power supply and the field scanning part, because the two parts work in high current and high voltage state, which is easier to go wrong. We dont ask you to get a thorough understanding of how it works. We only ask you to know that there are so many big parts. You before, must first be safety preparation: the first is the first to open the machine cover and disconnect the power supply before welding; two is not supposed to touch things never touch, because even in the case of power failure, some places still remaining inside the display with high and medium pressure, though not fatal, once hit that is enough to make you could not touch the The imprint is engraved on my heart.; the three is to pay attention to the protection of the machine, such as tube grounding