彩显缺色是比较容易解决的故障,如果没有掌握好基本信号流程和检修技巧在维修中便会走弯路,笔者将自己检修这一类故障的方法介绍如下:一、屏幕上缺基色和纯基色分析如果看到彩显,本该显示色区域而重视出紫色、青色或蓝色,且有颜色变化,那么可以判断它缺某一种基色(见表1)。表1 根据三基色混合原理推出缺少哪种基色例如:本应该显示白色但缺 B 基色那么白色就变成了黄色。纯基色,整个屏幕只显红色,绿色或蓝色,产生这类故障主要有3个方面原因:(1)末级视放采用直接耦合,其中驱动电路中的视放管 c、e 极击穿;(2) Color was lack of color is relatively easy to solve the problem, if you do not have a good grasp of the basic signal flow and maintenance skills will be detours in the repair, I will repair their own methods of this type of failure are described below: First, the screen lack of color and pure If you see the color display, the color area should be the focus of attention to the purple, blue or blue, and the color change, then you can determine it missing a base color (see Table 1). Table 1 based on the principle of three primary colors introduced the lack of what kind of color For example: This should be white, but the lack of B-color then white becomes yellow. Pure color, the entire screen only showed red, green or blue, resulting in such failures are mainly three reasons: (1) the final stage as the use of direct-coupled, where the drive circuit in the tube c, e pole breakdown ;(2)