1. Improper disassembly and assembly of power supply.
Improper installation of power supply will lead to leakage. There are many components in the power supply, and the space is narrow. If the disassembly is slightly improper, the components may touch the power supply housing. Like the inductance coil, it is almost naked. Once it touches the shell, the direct consequence is leakage. If it is really electric leakage, the electric shock of the human hand is very strong, and even the hand can be directly bounced off. Therefore, the installed power supply must be selected to ensure that the power supply itself does not leak electricity; When removing the power supply by yourself, ensure that the insulating plastic remains in place.
2. The internal cable is damaged and leaked.
Many wires used in power supply are of poor quality. Once these wires are used for a long time, they may be damaged externally. If the damage point is right next to the chassis, people will feel electric shock when touching the chassis. However, the internal voltage of the computer is low, and the highest voltage is only 12V, so the sense of electric shock is very weak in this case. Users can try to clean these cables first to avoid touching the chassis, but it is best to replace the new power supply.
3. The motherboard will also leak electricity.
When the motherboard leaks electricity, the feeling of electric shock is strong, almost like the power supply, with obvious tingling. The leakage of the motherboard will cause all components to be charged, including the heat sink and graphics card on the motherboard. Leakage is mainly due to damaged capacitors or motherboard components touching the chassis. Users can first observe whether all the capacitors on the motherboard are complete, and then check whether other cables touch the components on the motherboard. Minimize the operation of the system. If the motherboard is still live, it is that the internal wiring of the motherboard has been deformed and the motherboard needs to be replaced.
4. Computer electrostatic discharge
The host power supply will generate a lot of static electricity, but its internal "Y capacitor" can eliminate this part of static electricity. If the Y capacitor in the power supply is damaged and there is nowhere to discharge static electricity, leakage may occur. And this process is continuous, as long as the hand feels it, there will be a feeling of electric shock. Moreover, various high-frequency circuits on the motherboard will also release radiation, causing static electricity in the chassis. People also have static electricity. When you touch the chassis, the static electricity will be released once and then it will be gone.
To solve the problem of static electricity, a power board with grounding wire must be used. Really not, you can ground the chassis.