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The specific analysis and treatment method of power adapter failure

2022-07-09

Nowadays, the power adapter has been integrated into our daily life and work.

We use it everywhere. If we use it more, there will naturally be problems like this.

Today, the editor will introduce the specific analysis and processing methods of the power adapter failure.

As follows:

Now computers generally use ATX power adapters. When the system fails, a comprehensive analysis should be carried out from the aspects of BIOS, the power adapter itself and the motherboard. According to the principle of "soft first and then hard" in computer maintenance, first check whether the BIOS settings are correct, and eliminate false faults caused by improper settings; the second step, check whether the ATX Power Supply is normal; the third step, check whether the motherboard power supply monitoring circuit normal.
At the same time, when judging whether the power adapter is normal, you can remove the power supply and use a scrapped device (such as hard disk, etc.) as a false load to avoid no-load protection. Connect a 100-150Ω resistor between the PS-ON signal line (green) and the ground line to make the signal low. If the power supply can work, the fault is in the motherboard or BIOS settings, otherwise the fault is in the power supply itself.

The power adapter plays the role of the source of power in the computer system. Whether it works normally or not is the key prerequisite for the normal operation of the entire computer system. However, in the routine maintenance process of the computer room, it is found that the power adapter, like other computer components, will also have various failures.


Best regards,

Mandy Huang.

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