source:Industry News Popular:adapter release time:2021-12-22 11:38:56 Article author:sznbone
If the insurance burns out or explodes, please check the rectifier bridge, diodes, switches and large filter capacitors under 300 volts. It may cause the fuse to heat up and turn black, or it may be caused by an anti-interference circuit. In particular, it should be noted that the power control chip and the current detection resistor are usually burned due to the breakdown of the switch tube. The thermistor is also easy to burn out the insurance.
If there is a component problem, because the current power adapter already has a large number of patch components, once the component has a problem, the maintenance is more difficult. The power of the power adapter is also increasing day by day, so the test of electronic components is getting bigger and bigger. If the quality of the electronic components used in the power adapter is not up to standard and the PCB wiring is not suitable, it may increase the possibility of failure.
Observe the change of the computer indicator light: If you plug in the power adapter, you can see that the charging indicator light turns on and off, and the time does not disappear. This is the problem of the power adapter interface in the notebook computer. Generally speaking, internal wires may break, circuit boards may age, soldering may drop, etc. This is called false welding phenomenon.
Related issues: Reasons for the explosion of the power adapter: (1) The heat dissipation of the power adapter and charger products is not good; (2) The core quality of the power transformer is poor; (3) The quality of the power adapter IC or charger power supply equipment is poor; (4) The product parameter design of the power adapter is unreasonable; (5) The production process of the adapter is poor.
Therefore, when purchasing a power adapter, please confirm the conventional brand power supply and the manufacturer, so as to avoid personal safety and property safety losses due to explosion.
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