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What is the most effective way to determine whether the power supply is broken?

Generally, the computer runs very quietly. If you hear a loud noise from the power supply, it is a problem.

A power supply makes a loud noise and the system crashes, and an onboard capacitor explodes.

The easiest way to diagnose this problem is to smell the power supply after turning it off and disconnecting it from the AC power supply. If you can smell the burning smell with chemical overtones from the external vent of the power supply, your power supply has failed.

The smell lasts for a long time. When the power supply explodes, it will also damage the motherboard, the bus powered USB device connected to the computer, and other components.

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