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Pansonic toughbook CF-18 power supply

My toughbook will run on battery power but not when the AC cord is connected... With the battery fully discharged it won't power up,and I get an amber "battery charging"light for a few minutes and then it either changes to flashing red or goes out completely. The power cord works on another laptp just fine. Does this indicate a bad power jack? If so, how difficult is this to fix on this model of toughbook?? Thanks, Dave

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Symptoms of a broken power jack
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http://www.askmehelpdesk.com/computers-beginners/opening-toughbook-cf-47-a-25391.html
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