source:Industry News Popular:adapter release time:2022-04-06 10:22:57 Article author:sznbone
Through practice, we can understand the electronic components in the power adapter circuit, understand the circuit structure, understand the basic working principle of the circuit, determine some key power during testing, obtain some key data, and provide reference materials for maintenance, so as to master the basic Repair methods and procedures.
1. Static observation. Observe the distribution of components in the circuit, identify the characteristic components, and determine the key detection points during maintenance through observation. Sometimes, some obviously damaged components can be found for the faulty power supply, so as to lay a good foundation for repairing as soon as possible.
2. Measure resistance. For the circuit connections that are not easy to see, use the resistance measurement method to figure out its connection and direction, and then figure out the circuit structure, and at the same time grasp the ground resistance value of some key points to provide reference data for future maintenance.
3. Measure the voltage. In the case of power-on, measure the voltage of some key points and master the first-hand information of maintenance. The method of voltage measurement is: the pointer multimeter uses the DC voltage gear (which gear is selected according to the specific object value) black test lead Ground, the red test lead is connected to the test point. The digital multimeter uses a DC voltage gear, the black mark is grounded, and the red meter is connected to the test point.
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