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保护电路动作,一般有两个原因:一是主电路发生故障,保护电路动作;二是保护电路本身有故障。实际维修中要注意区别二者,分别加以处理,首先要判断是否为主电路发生故障,其次才去检查是否为保护电路本身发生故障。但是要确认主电路是否有故障,即使对主电路的关键部位进行检查,也非易事,因为主电路已经保护,不能带电检查,难度较大。那么,如何快捷、迅速地查出这类故障呢?笔者曾遇到一台康佳45cm
Protection circuit action, there are two general reasons: First, the main circuit fails to protect the circuit action; the second is the protection circuit itself is faulty. The actual maintenance should pay attention to the difference between the two, respectively, to be processed, we must first determine whether the main circuit failure, and secondly to check whether the protection circuit itself fails. But to confirm the main circuit is faulty, even if the key parts of the main circuit to check, is not easy, because the main circuit has been protected, can not be charged to check, more difficult. So, how to quickly and quickly detect such failures? I have encountered a Konka 45cm