许多文章上介绍过短路法,就是用一只电容器去短路各级输入端,观察荧光屏上图像或扬声器中声音的变化,可以判断出图像或伴音通道的故疾。本文介绍的是在电视维修中用导线直接短路来判断故障,事实证明这是一种快速检测电视机常规故障的有效办法,起到事半功倍的效果,本文以凯歌4D20U型为例。例1 短路检波级可判断是否有故障。故障现象:有光栅、无图、无声,同时也无噪点及无 Many articles on the introduction of short circuit method, is to use a capacitor to short circuit at all levels of input, observe the screen image or speaker sound changes, you can determine the image or sound channel of the disease. This article describes the use of direct wire in the TV repair to determine the fault, it turns out that this is a quick test TV routine failure effective way to play a multiplier effect, this article to Kay song 4D20U type as an example. Example 1 short-circuit detection level can determine whether there is a fault. Symptoms: a grating, no map, silent, but also no noise and no