收到同行送来的故障机壹台创维液晶电视24E600E,故障表现为绿灯镉闪,初步定在电源板上,芯片是73E48,用73G42代换后开机故障不变,短接光耦,有变化,前提是大管要串100W灯泡。看来故障元件在处理,也就是光耦前级,测量发现丝印2x坏了,代号Qb5,更换后故障修复。 |
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