收到同行送来的故障机壹台海信LED46XT68G3D液晶电视,故障表现为灯亮不开机。故障原因:通电测主板RSAG7.820.4350各组电压,发现没有为主芯片供电的1.2V内核电压,试更换N8(AOZ1016AI )无效,最后查出⑥脚使能端外接电容C58漏电,如图1所示。 |
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