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What should I do if the computer case leaks? Chassis power leakage causes and solutions

Generally speaking, there are many reasons for the leakage of the chassis. It often occurs in a computer that has been used for a long time. The cause may be power problems, too much dust inside the chassis, etc. - In general, the problems are concentrated in the following aspects: .

1. External causes lead to leakage of computer case

Sometimes the leakage of the computer may not be caused by the main board inside the computer case or the leakage of the power supply. Sometimes, the leakage of the chassis may be caused by external causes, such as the chassis being placed too close to other appliances or the chassis being touched. Broken wires, etc., causing the chassis to leak.

For the leakage of the chassis caused by such external causes, the solution is very simple. When we find that there is leakage in the chassis, check whether there are any electrical appliances or any wires in the vicinity of the computer chassis, and the position can be solved by moving the position.

2, the internal cause of leakage of the computer chassis

Internal causes of computer chassis leakage is the most common computer leakage situation, then what hardware inside the computer case is easy to leak? This is actually very good to know, mainly find which hardware and the chassis have contact, such as the power is the most likely to cause chassis leakage In addition, the other is that the motherboard is prone to leakage if it is not installed properly, or if some components lead to the chassis.

In the leakage of computer chassis, it often appears on some computers that have been used for a long time. This is because the internal aspects of the power supply of the new computer chassis are relatively normal, and there is generally no leakage imagination. However, if the power supply is used excessively, or if it encounters a bad weather environment such as humid weather, it will destroy the good "environment" of the power supply itself, and leakage will also occur. It is more common that the internal power supply is too dusty and the internal humidity is caused by moisture. The path between the components and the metal shell of the power supply causes leakage, and the power supply is often in close contact with the chassis, so the old computer is prone to leakage.

What's more, every component inside the platform is likely to cause leakage, which causes us to touch the chassis outside the platform, and there is a feeling of leakage. The leakage situation is also derived from the electrical plug-in board used by the user. There is no perfect grounding design, which causes the leakage effect generated by the internal components of the platform. It is impossible to guide the leakage into the ground through the grounding to reduce the risk of leakage.

What should I do if the computer case leaks?

1. If leakage is found, we must first confirm whether the electrical plug-in board used by us has a good grounding design. If it is not replaced immediately (including the more common wall-mounted electrical socket in the home), it has good grounding, even if it is generated. Leakage can also minimize damage and loss.

2. Open the chassis and look at the wiring inside and outside the chassis. The insulation package is not damaged. The metal part of the wire is exposed to other accessories and the chassis, and it will be replaced immediately. Or directly select the wire wrapped with nylon mesh, which can also achieve better insulation effect.

3, the problem of wire and socket grounding is ruled out. In view of the previous analysis, the biggest cause of leakage of the chassis is the power supply. Let's start with the power supply, disassemble the power supply, see if the EMI circuit of the power supply is complete, and the spacer components are Whether the plastic film or mica sheet between the metal casing of the power supply has lost the insulation effect, and there is no explosion in the internal capacitance of the power supply. If there is a problem, you can create a high temperature resistant plastic film, in the component and the power supply. A shield is formed between the outer casings. If it cannot be solved, replace the power supply immediately.

4. Finally, check the motherboard and graphics card inside the chassis to check whether there is any deformation of the PCB board, etc., resulting in direct contact with the chassis. The method of inspection is preferably to use a minimizing system, on the one hand, to make the platform easier to judge, and on the other hand to avoid unnecessary damage during testing of components such as hard disks.

5, finally check the chassis itself, behind the front panel of the general chassis, there is a PCB circuit board that connects the motherboard audio, signal, switch, USB extension, we also need to check whether the circuit board and the wire on the connection circuit board are insulated. Invalidation, short-circuiting of components, burnout, if any, can be repaired or replaced with simple electrical common sense and electrical tools.

6, of course, we can also put the chassis into a relatively dry position (such as the original location is more humid and easy to cause short-circuited wires), replace the bottom of the insulated shoes and other methods, to conduct a full range of judgments, and finally find the main cause of leakage.

For general leakage problems, the novice friend can also take a wire to connect the chassis to the metal grounding object, and let go of the leakage. Pay attention to the grounding. You can connect the radiator to the aluminum alloy window. On a large-scale metal grounded object, the effect on the direct grounding plate is not good, and there may be a feeling of leakage of the chassis. Therefore, it is better to connect the grounded metal object.