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康佳电视开机后屏幕变暗怎么办

更新时间: 2020-09-25 00:00:00     

此故障是开关电源电路问题,解决办法如下:

1、检测整流滤波后,是否有正常的300Ⅴ电压输出;

2、检测开关电源稳压振荡电路,芯片各脚对地电压是否正常,若此电路带载能力差极易产生屏幕很暗、或黑屏故障;

3、以上经检查,换件后,使电路恢复正常即可。

关键词: 电视 开机 屏幕 怎么办

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