Question about Dell (8N816) Motherboard

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Inspiron 6400 DC input fault

I have worked Mother Board Dell Inspiron 6400 but the DC input have a problem no input from the Jacket ( what happened is the positive and Negative terminals are changed between each other and that make some thing faulty in the motherboard I could not find it what exactlly  where and what it is , It is the chip for supply voltage or the resistor or the Capacitor , please advice me . how can I troubleshot this problem

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rajesh raman

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Please remove the power supply pin from the mother board short the pin witres colured green and black if the power supply is working then there is no problem with the power supply check ur memory card to if the pwoer supply is working iff its ok and still not working contact a chiplevel engineer to correct the mother board as there is problem with powersupply section in ur motherboard

Posted on Nov 30, 2007

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Hi,
There are instructions on the Dell website. Try the support section.

Google is your friend. Try here:
http://ahwee.com/how-to-disassemble-laptop-insp6400

or here
http://repair4laptop.org/disassembly_dell.html

or here
http://en.community.dell.com/support-forums/laptop/f/3519/t/18796754.aspx

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