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华硕F80S MiniPCI-E复位脚无电,与桥有关?

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Post time: 2018-10-7 11:42:12
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本帖最后由 笑对人生123 于 2018-10-7 11:49 编辑

今有华硕F80S笔记本一台,上电,开机,电流0.9A左右,不显。测得MiniPCI-E第22脚(复位脚)无电。下图即是 MiniPCI-E。


顺图纸找到了这里。



U2002,5脚3.3V,4脚无电。再查1和2脚去了北桥(俺小白,自己觉着那应该是北桥,就是下图中间那个SIS)。



目前这个情况,可以判断是桥坏了?还是中间图上那个NC7SZ08P5X坏了?

请师傅们给予指点,成分感谢!


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Post time: 2018-10-9 11:45:51
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你说触发电流上到0.9a时
平台复位没有?这个电流应该是有哪个电路短吧!
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Post time: 2018-10-9 11:47:39
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上的电路图片太模糊了,看不清楚!
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 Author| Post time: 2018-10-9 20:04:29
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这块板子是网上买的二手板,在桥的背面贴着一个保修的日期标签,我估计可能这块二手板动过这个桥。因此也怀疑现在的问题也出在这个桥上。
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