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View: 9463|Reply: 28

主板DDR怎样检测

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Post time: 2015-9-9 10:54:00
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请问大家现在修电视机主板,DDR通讯检测不过这些问题是怎么维修,主芯片和DDR都是BGA的板材断线或漏电这些问题怎样的一个判断和维修处理。
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Post time: 2015-9-9 11:09:24
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用数字万用表,打到20K档,表笔一脚接地,另一个脚测量每一个DDR印制线,阻值偏差较大的印制线就有问题,,
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 Author| Post time: 2015-9-9 11:33:02
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kikokill 发表于 2015-9-9 11:09
用数字万用表,打到20K档,表笔一脚接地,另一个脚测量每一个DDR印制线,阻值偏差较大的印制线就有问题,,

请问是不是在路测,不拆主芯片和DDR吗?,技术差,请说详细点。谢谢
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Post time: 2015-9-9 12:56:45
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就是在路测量,不拆,,,,,
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Post time: 2015-9-9 14:22:34
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这个就学习学习‘’‘’‘’‘’‘’‘’‘’‘’‘’‘’‘’
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Post time: 2015-9-9 14:57:20
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方法值得学习,谢谢二楼的经验
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Post time: 2015-9-9 15:41:18
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打阻,跑线路,当然是辛苦活,当然,你可以直接换板子,那就更加直接,成本也高了。
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Post time: 2015-9-9 17:45:07
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用二极管蜂鸣档。红表笔接地,黑表笔测个相关脚也行哦
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 Author| Post time: 2015-9-9 20:30:09
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有什么好办法请师傅们在传下。。。
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Post time: 2015-9-17 20:54:12
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进来学习学习 !!!!!!!!!
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