论文部分内容阅读
彩色电视机经过长期使用以后,由于油烟、湿气的侵蚀,彩管管座处极易发生氧化漏电现象。管座上不同电极出现漏电所产生的故障现象各不相同,初学者可以依据下述规律来速判故障部位。 (1)开机后,屏幕上的图像长时间模糊不清,通常是聚焦极氧化漏电引起的。 (2)开机后,屏幕上光栅亮度较长时间才正常;一般是加速极氧化漏电造成的。 (3)管座氧化严重,对地有固定电阻产生时,常会造成
After long-term use of color television sets, due to the fumes, moisture erosion, color tube socket is prone to oxidation leakage phenomenon. Tubes on different electrodes appear leakage caused by the failure of different phenomena, beginners can quickly determine the fault site according to the following rules. (1) After power on, the image on the screen is blurry for a long time, usually caused by focusing on the oxidative leakage. (2) After turning on the light, the brightness of the grating on the screen is normal for a long time; it is generally caused by accelerating the oxide leakage. (3) serious oxidation of the socket, the ground has a fixed resistance, often caused