Power adapters are often used in computers and laptops, so how to detect problems with faulty laptop power adapters? Follow the editor to learn about the following points! 1. Firstly, you can check if the power adapter or laptop battery is in good contact by gently shaking the power connector or battery. If it is not working properly, try reinstalling the power adapter or battery. Possible fault conditions include deformation of the power connector or decreased elasticity of the battery contacts; 2. If the power supply or battery connector is in good condition, a multimeter can be used to measure the output voltage of the power adapter or battery, mainly to check whether the output voltage is stable and whether the actual output voltage value matches the nominal voltage of the power supply. If the output is unstable or the actual output voltage differs significantly from the product nominal voltage, the damaged power adapter or battery needs to be replaced; 3. If the above detection steps all display normal, it can be inferred that the fault is on the laptop power board or motherboard. Here, it is necessary to open the laptop case and check if the power board and motherboard are in good contact; 4. If the power board and battery are in good contact, use the replacement method commonly used by DIY to check if the power board is normal. If it is not normal, replace it; 5. If the power board and battery are confirmed to be normal through the above methods, it can be inferred that the laptop motherboard or other main components are damaged (such as a power on circuit malfunction). At this time, the motherboard can be repaired or replaced
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