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主要调节旋钮的检查（1）电源开关，它用来接通或关闭电视机的电源。它通常和音量调节电位器装在一起，但也有少数电视机将它附在亮度电位器上，极个别机器附在对比度电位器上，或者单独设置。在结构上电源开关分旋转式和推拉式两种。旋转式与收音机中的用法相同，将电位器控逆
Main adjustment knob check (1) Power switch, which is used to switch the TV on or off. It is usually installed with a volume control potentiometer, but there are a few TVs that attach it to a brightness potentiometer, some of which are attached to a contrast potentiometer, or are set separately. In the structure of the power switch sub-rotary and push-pull two. Rotary and radio use the same, the potentiometer control inverse