收到同行送来的故障机壹台海信LED50K310X3D液晶电视,故障表现为是开机一段时间后花屏死机。故障原因:本机采用RSAG7.820.4779主板,常见原因是3.3V供电稳压器N105性能不良,如图1所示。 |
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