准确判断集成电路的好坏是修理电视机、音响、录像设备的一个重要内容,笔者认为判断集成电路的好坏,要掌握该集成电路的用途、内部结构原理、主要电特性等,必要时还要分析内部电原理图。另外,如果有各引脚对地的直流电压、波形、对地的正反向直流电阻值,那么对检查判断就提供了更为方便的条件,然后按照故障现象判断其故障部位,再查找故障元件。有时需要多种判断方法去证明该器件是否确实损坏。对集成电路的检查判断方法一般有两种:一是不在线判断(即集成 Accurately determine the quality of integrated circuits is to repair the TV, audio, video equipment, an important part of the author that the judge IC good or bad, to grasp the purpose of the integrated circuit, the internal structure of the main electrical characteristics, etc., if necessary To analyze the internal electrical schematic. In addition, if there is pin to ground DC voltage, waveform, the positive and negative DC resistance to the ground, then check to determine the more convenient conditions, and then determine the fault location according to the fault phenomenon, and then find the fault element. Sometimes you need a variety of judgments to prove that the device is really damaged. There are two general methods for checking and checking integrated circuits: one is not online judgment (that is, integrated