一、康佳背投彩电1.无光栅、无伴音例1:康佳BT5080背投彩电,无光栅、无伴音,电源指示灯不亮。分析与检修:由于该机的指示灯由主电源产生的5V电压供电,所以该机出现无光栅、无伴音,电源指示灯不发光故障,说明电源电路、市电输入电路异常。首先,查看市电输入回路的保险管是否正常,开机 First, Konka rear projection TV 1. No grating, no sound Example 1: Konka BT5080 rear projection color TV, no grating, no sound, the power light does not light. Analysis and Maintenance: As the aircraft lights from the main power generated by the 5V voltage supply, so the machine there is no grating, no sound, light does not light power failure, indicating the power circuit, mains input circuit is abnormal. First of all, check mains input circuit fuse is normal, boot