收到同行送来的故障机壹台长虹LT32710液晶电视，此机开机故障为灰屏，有时又会出现正常的图象。测量屏供电灰屏时为8V，取下屏排线还是8V，换24V转12V芯片1584后12V正常。故障机修到这里，终于修好值得探讨。。 |
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