I recently found signs of leakage in the case. Use an electric pen to test it on the computer case. It is found that the front and side panels of the case are normal. That is, when the rear panel is touched, the pen light is on, and the seam is the brightest.
The problem of energized chassis is more common, but in most cases the voltage is lower than 36V, which is not easy for users to notice. Energizing the chassis does not completely indicate that the power supply or the motherboard is leaking. Because the power circuit itself will be connected with a capacitive element between the input terminal and the ground wire to achieve the filtering effect. The ground wire is connected to the power supply or the casing of the chassis of. If the power supply is not properly grounded, the voltage to the ground may be generated in the case of the test chassis. Therefore, if you find that your chassis is live, the first thing to do is to connect the ground wire to the power supply (the top of the three-port power socket is the ground wire). Many households' power grids are not buried according to the regulations. This is a potential safety hazard, and electricians are required to improve the power grid, in addition. You can also connect the ground wire port to the metal water pipe by yourself to achieve the effect of grounding.
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