笔者根据张先生在《长虹D2965A大屏幕彩电奇特故障检修(简称“奇特”)》一文中提供的故障现象和检修经过,试从彩电这部分电路的工作原理谈起,分析故障的形成过程,以及故障的真正根源。根据张先生在“奇特”之中指出故障的现象,进行故障特征的分类划分,用以判断故障范围:(1)图像闪动,伴音沙哑,说明图像和伴音都同时发生故障,那么,故障电路是图像和伴音共用电路;(2)故障时有时无, According to Mr. Zhang in “Changhong D2965A large screen TV strange troubleshooting (referred to as” strange “) in the article provided by the phenomenon and overhaul, try this part of the circuit color TV works on the analysis of the formation of the failure process, and The real cause of the malfunction. According to Mr. Zhang pointed out in the ”strange" the phenomenon of failure, the classification of fault characteristics, to determine the fault range: (1) the image flashes, hoarseness, indicating the image and sound are both failures, then the fault circuit Is the image and sound sharing circuit; (2) fault sometimes no,