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一台北京842黑白电视,因雷击造成伴音失控。经改动外围电路使音量控制正常。方法是:音量电位器高电位端经电容接集成块第①脚.滑动触头通过外接电容接第⑦脚.把原第①脚第⑦脚
A Beijing 842 black and white television, due to lightning caused the sound out of control. By changing the external circuit so that the volume control is normal. The method is: the volume potentiometer high potential side by the capacitor connected to block the first foot. Sliding contact through the external capacitor connected to the first ⑦ foot. The original ① foot ⑦ foot