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 <title><![CDATA[西门子CPU224电源板电阻发热烧是怎么回事？]]></title>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1464703.html]]></link>
 <description><![CDATA[Latest 50 replies of 西门子CPU224电源板电阻发热烧是怎么回事？]]></description>
 <copyright><![CDATA[Copyright(C) 工控人家园]]></copyright>
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 <lastBuildDate><![CDATA[Thu, 16 Apr 2026 07:14:48 +0000]]></lastBuildDate>
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 <title><![CDATA[工控人家园]]></title>
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 <description><![CDATA[工控人家园]]></description>
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 <title><![CDATA[]]></title>
 <description><![CDATA[反馈电阻烧了....奇怪的烧法..]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1464703#1599675.html]]></link>
 <author><![CDATA[xyz444]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 04 Sep 2014 01:39:49 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[我拆过 还炸过一次&nbsp;&nbsp;]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1464703#1599376.html]]></link>
 <author><![CDATA[发射点]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 03 Sep 2014 00:29:09 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[拆过cpu224xpcn好像不一样啊，我拆过的是24供电，里面没有这块板子]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1464703#1599332.html]]></link>
 <author><![CDATA[ffd001]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 02 Sep 2014 13:29:38 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[光耦漏电了吧？？？看看24伏正常不，电解电容也是主要检查的对象，电容有问题的话哪个电压取样芯片也可能出问题了]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1464703#1599330.html]]></link>
 <author><![CDATA[ffd001]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 02 Sep 2014 13:25:19 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[光耦合器是检测后级直流电流和电压的反馈，&nbsp;&nbsp;看一下后级正不正常（变压器次级）]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1464703#1598793.html]]></link>
 <author><![CDATA[liulungao]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 31 Aug 2014 15:29:00 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[如果光耦没问题...就是旁边那片IC了...]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1464703#1598778.html]]></link>
 <author><![CDATA[kyy80]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 31 Aug 2014 14:33:09 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[220欧的电阻，而且是连着光耦的，三个同时换掉吧]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1464703#1598748.html]]></link>
 <author><![CDATA[kaiyuan12345]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 31 Aug 2014 13:48:25 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[这个是桥堆芯片下面，稳压芯片上面的电阻吗？如果是，很有可能是稳压芯片有问题了，造成输入电流过大，那就要烧电阻率了]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1464703#1598719.html]]></link>
 <author><![CDATA[niningtt]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 31 Aug 2014 12:48:22 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[PLC电源板成色不错，是否在使用中烧电阻？
电阻回路是否过流，所连接器件是否击穿损坏？
直接更换电阻试试。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1464703#1598716.html]]></link>
 <author><![CDATA[amw525022717]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 31 Aug 2014 12:44:22 +0000]]></pubdate>
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