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用“瑞康”080型遥控器加装彩电遥控功能,有些被改机型彩电经一段时间使用后,会出现无字符显示、无伴音的并发故障。表面看起来好象故障部位各出在屏显和伴音电路,其实是与屏显电路能否正常工作的行逆程脉冲的有无相关。由于彩电机型各异,行逆程脉冲信号取点不同,有的取自灯丝非接地端,有的经行变磁芯用导线绕一圈取得,还有
With “Ruikang” 080-type remote control TV remote control function is added, and some were modified model TV by the use of a period of time, there will be no character display, no sound of concurrent failure. The surface looks like parts of the fault in the screen and audio circuit, in fact, is the normal operation of the screen display circuit with or without reverse pulse pulse related. Because of different color TV models, the line pulse signal taken from the point of different points, some from the filament non-ground end, and some through the change of magnetic core with a circle made around the wire, there