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松下等离子TH-P46U30C无声音黑屏

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Post time: 2020-4-28 18:18:08
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松下等离子TH-P46U30C开机。绿灯快闪后常亮,屏幕无反应黑屏,无声音,大约10分钟后听到有继电器动作的声音,绿灯转为红灯闪13次,拆机测量,绿灯亮时Vsus=208V Vda=55.5V STBY5V=5V F_STBY_ON=3.2V P_M_ON=3.2 F15V=15.9V F15Vc=15.9V F15Vs=15.9V测量A板5V3.3V1.2V等各路电压未发现异常,A板光纤接口有红光发出,SC板指示灯不亮,A板IC9300无温升,感觉像没有工作,但晶振的波形正常,红灯闪时只有STBY5V正常,其他电压都为0.烦请大师傅分析分析确定下故障部位,或者分享下这款机型的维修手册,非常非常感谢!

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Post time: 2020-5-8 08:52:28
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搞好没有,没搞好,主芯片加焊试试
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 Author| Post time: 2020-5-10 10:44:18
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泰华林 2020-5-8 08:52
搞好没有,没搞好,主芯片加焊试试

没搞好!买了一块主板是坏的!郁闷死!
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Post time: 2020-5-11 18:18:27
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拆屏仔细观查一下,或许能发现问提。
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Post time: 2020-5-11 19:17:45
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用的是什么屏?先屏自检看看是不是好的,屏自检是不用接主板。
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