source:power adapter Popular:adapter release time:2021-08-03 10:52:12 Article author:sznbone
How to detect the failure of the notebook 12V power adapter? What are the detailed steps? The following power adapter manufacturers summarize the four steps for you:
Step 1: Firstly, you can check whether the 12V switching power adapter or laptop battery is excellent in touch by gently shaking the 12V switching power adapter or battery. If it is abnormal, test and reinstall the 12V2A power adapter or battery. The fault that can be present is that the power connector is deformed due to external force or the elasticity of the battery contacts is reduced.
Step 2: If the 12V switching power supply adapter or battery and laptop connector are excellent touch, use a multimeter to measure the output voltage of the 12V2A power adapter or battery, first check whether the output voltage is stable, and practice the output voltage value and the 12V switching power supply adapter Does the voltage indicated on the nameplate comply? If the output is unstable or the actual output voltage is very different from what is indicated on the product, you need to replace or repair the damaged 12V2A switching power supply adapter or battery.
Step 3: If the above detection process all appear to be normal, at this moment, you need to open the laptop casing to check whether the power board and the main board are in good touch. If the power board and the motherboard are in good contact, it can be guessed that the problem is on the notebook's motherboard. However, the editor advocates that the process of disassembling the laptop should be checked and judged by the technicians of the repair service bar.
Step 4: If the power board, main board, 12V switching power supply adapter, and battery are all normal after the above methods, it can be guessed that other main components are damaged (such as power-on circuit failure). At this moment, it should be replaced or repaired by a technician in the repair service department. The main part.
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