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在实践中利用本机音量电位器判别电视机蜂音产生的大致部位,可以缩小故障范围,克服盲目性,提高维修效率,收到很好的效果。不同部位产生的蜂鸣声在调节音量电位器时反映也有所不同,总的来说大致有三种现象,即在调节音量电位器时:①蜂音大小无变化,或变化甚微;②蜂音与伴音输出同步增减,无伴音输出,蜂音也消失;③伴音输出增
In practice, the use of local volume potentiometer to determine the approximate location of television buzz, you can narrow the scope of failure to overcome the blindness and improve maintenance efficiency, received good results. Buzzer sound generated by different parts of the volume potentiometer in the adjustment when the response is also different, generally speaking, there are roughly three phenomena, that is, when adjusting the volume potentiometer: ① no change in the size of the buzz, or little change; ② buzz And audio output synchronization increase and decrease, no audio output, the buzzer disappears; ③ sound output increased