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液晶电视黑屏有声音，电源板损坏还是灯条问题？接假负载一试便知
液晶电视黑屏有声音，背光灯条不亮，到底是电源板坏了还是液晶屏灯条问题，接上假负载，试一下就知道了，方法很简单
液晶电视机常见故障，原理与维修，合集46/87
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