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方正FH980 液晶显示器求助

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Post time: 2020-3-8 08:14:35
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方正FH980 液晶显示器求助

接修一台方正显示器,蓝灯亮不开机,经检测 灯管和驱动板都坏,换了灯管,驱动板用用一通用驱动板换上,此机已修复正常,

闲来没事开始研究原机的驱动板,发现,原机驱动板冲刷驱动后,好用了一次,但装机后又打不开了,拆下后,再怎么重刷驱动也打不开机子了,
原机的驱动板没有发出oN信号,但拔掉屏线后on信号就出来了,灯管可以点亮,断电后插上屏线ON信号又出不来了,但屏是好的,请问大家遇到这种情况吗

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Post time: 2020-3-8 08:49:40
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电源板后级滤波电容全换掉试试
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 Author| Post time: 2020-3-8 09:07:17
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lumeng 2020-3-8 08:49
电源板后级滤波电容全换掉试试

电源板没问题,换过
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