What should I do if the Win7 computer mainframe is leaking? Computer host chassis leakage solution

Win7 computer mainframe chassis leakage how to do? Everyone knows that desktop computers will be equipped with a host chassis. Recently, a Win7 user found that the computer case will leak electricity. If you accidentally touch the computer case, there will be a shock, which is uncomfortable. How to solve the problem of leakage of the computer case? The following small series will share the reasons and solutions for the leakage of Win7 computer mainframe chassis.

how

Win7 mainframe computer chassis leakage do?

According to the safe use of computers, three items of electricity should be used. If you are using two batteries in your home and there is no ground wire, the EMI circuit of the computer power supply will put the metal part of the chassis with voltage. The function of the EMI circuit is to filter out the clutter of the grid voltage to ensure the stability of the input voltage. This function is only available for power products that have passed the national electrical product certification (in short, it is only through the national CCC certification). So in order to use the computer safely, please be sure to connect the ground wire and ensure that the ground wire is well grounded. If you don't have a ground wire at home, you can make two wires on one side and one bare body on the side plate screws. The other one is bare. Lost on the ground.

1, the motherboard will also leak

The motherboard will also leak? This is absolutely true, even the mobile phone motherboard will leak electricity, not to mention the large size of the computer motherboard. When the main board leaks, the feeling of touching the hand is relatively strong, almost the same as the power leakage, there will be obvious tingling. And the leakage of the motherboard will cause all components to be charged, including the heat sink on the motherboard, graphics card, etc., will have an electric shock. The main board is leaking, mainly because the capacitor is damaged or the motherboard components are in contact with the chassis. Therefore, the user can first observe whether all the capacitors on the motherboard are complete, and then check if other cables touch the components on the motherboard. It is best to remove the motherboard, only add the processor, memory, graphics card to minimize system operation. If it is still powered, it is likely that the internal wiring of the motherboard may be deformed. It is recommended to replace the motherboard.

2, static discharge should be standardized

About static electricity on the computer, in fact, very difficult to define. The power supply generates a lot of static electricity, but the internal “Yu capacitor” is the leakage capacitor, which can eliminate this part of the static electricity. If the Y capacitor in the power supply is damaged, static electricity is not released, and the power supply may leak. And this process is continuous, as long as the hand touches it, there is a touch inductance. The various high-frequency circuits on the motherboard will also release radiation and cause static electricity in the chassis. Even people themselves have static electricity, and they will be released when they touch the chassis. However, such static electricity can be completely released at once and cannot be sustained. It may be that the hand touches the chassis, but it is no longer touched. To resolve static electricity, be sure to use a power strip with a ground wire. If it is not working, ground the chassis. But pay attention to the use of gas pipelines and tap water pipes as grounding is absolutely impossible! The former will cause the pipeline to explode due to the electric spark, while the latter seems to be reliable and recommended by some people who do not understand the common sense of electricians. However, the conductivity of the tap water pipe is excellent. In the event of a short circuit, the leakage current is enough to reach life. Degree!

3, internal cable damage leakage

A lot of power supply wire quality is not good, and even some of the wires such as hard disk data lines also have a variety of problems. These wires may be damaged externally once they are used for a long time. If the broken point is just next to the chassis, there may be a contact inductance when the person touches the chassis. However, the internal voltage of the computer is very low, but the maximum is only 12V. Therefore, the contact inductance is very weak in this case, and the hand has a slight tingling feeling. Users can try to clean these cables first. If the chassis does not leak, it means that the cable is damaged. It is recommended to replace the new one.

4, improper power supply disassembly

is due to improper installation of power supply caused by leakage. There are a large number of components inside the power supply, and the space is small. If you disassemble it a little, the component may touch the power supply case. Like an inductor coil, it is almost bare. Once it touches the casing, the direct result is leakage. If the power supply is leaking, the contact inductance of the human hand is very strong, and even serious may even bounce the hand directly.

In fact, we can see when we unpack the power supply. There are plastic sheets for insulation inside, and even some plastic sheets will block the air outlet. However, in the process of reinstalling the power supply, it must be Make sure these plastic sheets are in place. If the user still can't solve the problem after carefully reinstalling the power supply, try using a rubber sheet around the power supply board, but be careful not to block the cooling air duct.

About the Win7 computer host chassis leakage solution for everyone to share here, there are friends who have encountered computer chassis leakage, may wish to check the above reasons, I hope that the introduction of Xiaobian can help you.