论文部分内容阅读
一台牡丹牌20C2型彩电,在屏幕右侧出现大面积暗区。具体现象是:在冷态开机时,屏幕右侧出现一块人头大的暗区,面积约占屏幕的一半,而在暗区的上部和右部的屏幕边缘还有正常的光栅。暗区部分为漆黑,暗区中无任何闪亮光线。同时整个屏幕的光栅略有左右晃动现象,暗区也随光栅略有左右晃动。收到信号后,图像、彩色、伴音以及所有控制均正常。开机后约8分钟,暗区面积逐渐缩小直至完全消失。若关机后又立即开
A peony card 20C2 color TV, dark area on the right side of the screen appears large. The specific phenomenon is: in the cold boot, the screen appears on the right side of a large dark head, the area accounts for about half of the screen, and in the dark area of the upper and right screen edges and normal raster. Part of the dark area is dark, dark area without any shiny light. At the same time the entire screen raster slightly sloshing phenomenon, the dark area is also slightly raster about shaking. After receiving the signal, the image, color, sound and all controls are normal. About 8 minutes after turning on, the area of the dark area gradually narrows until it completely disappears. If the shutdown immediately after the open