万用电表在使用过程中出现卡针、指针不回零位、不平衡误差过大等故障时,可以自己动手修理。本文向大家介绍一些简易的修理方法。一、卡针卡针故障很容易检查出来。将可调的直流电流通入表头,仔细观察指针在由零位向满刻度摆动再由满刻度摆回零位的过程中,是否有卡住或者稍稍停顿一下的现象。如果有,就是卡针故障。也可用轻晃一下表头,使指针摆至满刻度的方法,观察是否卡针。 Multimeter in the course of the card needle, the pointer does not return to zero, the imbalance error is too large and other failures, you can do it yourself. This article introduces you to some simple repair methods. First, the needle card needle fault is easy to check out. The adjustable DC current into the header, carefully observe the pointer in full swing from zero to full scale swing back to zero in the process, there is stuck or a slight pause phenomenon. If yes, that is, the needle is faulty. You can also gently shake the head, the pointer to the full scale method to observe whether the card needle.