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松下MPF6910电源维修求助

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Post time: 2019-5-6 21:03:02
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松下TH-P46U30C 请教电源故障。拆机单独测电源,P6短接1·6·7脚,P34短接1·3脚。通电瞬间测得PFC403V,vsus200V后消失慢慢下降,继电器断开。只有待机5V,15VC .如果取消P6 1脚短接。桥堆电容285V.其他5V,15V都有,SOS脚电压升到3.2V 上机测也是如此,清洗过板子,检查过线路氧化。测量过PFC及其他电压检测电阻都正常。没发现什么异常。请教爱修网师傅们下一步怎么搞????
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Post time: 2019-5-7 11:28:39
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Vsus有没有接负载啊
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 Author| Post time: 2019-5-8 12:13:39
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名品电器维修 2019-5-7 11:28
Vsus有没有接负载啊

没有。我接灯泡试试再说,谢谢
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