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How do you fix a loose power pin in a laptop (where the cord plugs in)?

Posted on 2006-03-22
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Last Modified: 2008-01-09
My laptop has a loose pin where the laptop power cord goes in. How do i fix this problem? The laptop wont start because the battery wont charge because the power cord doesnt provide power to the laptop. It is a HP ze4125 and was bought in 2002 (i think).
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Question by:yknihc
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by:Callandor
ID: 16261702
It depends on what is broken.  If it's the middle pin, a new jack is needed, because that pin can't be repaired.  If it's a jack that's surface mounted to a PCB, the solder connections may have been broken and re-soldering will fix it.
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by:nobus
nobus earned 140 total points
ID: 16266847
i repaired a laptop with a broken power jack, but :
-i had to disassemble the laptop completely
-i still had the broken part
then, after resoldering the pin, i had to glue back the plastic parts of the jack in several consecutive actions

maybe this can help a bit for opening the laptop :

http://h10032.www1.hp.com/ctg/Manual/c00246219.pdf
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Expert Comment

by:PCBONEZ
ID: 16268976
Replacement jacks for most laptops are available on eBay now.
You can also go through an electronics supply once you know the size.
They usually look like this.
http://www.allelectronics.com/cgi-bin/item/DCJ-1/190/2.1MM_DC_POWER_JACK_.html

If the PC Board is badly broken where the jack goes the way to fix that is to solder wires to the copper strips that used to go to the jack and install a panel mount jack in the laptop chassis.
(Panel mount is the kind that goes in the hole and is held in place with a threaded nut.)
Looks like this one (but you not want a closed shunt type).
http://www.allelectronics.com/cgi-bin/item/DCJ-21/190/2.1MM_COAX_POWER_JACK,_PANEL_MOUNT_.html
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ddrdan earned 110 total points
ID: 16279098
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Expert Comment

by:Wooky Jack
ID: 16308538
THis happend to me on my Dell Inspiron 5150.  I ended up buying a new motherboard on ebay.  Also, you might try plugging the ac power supply into a different outlet than what you are currently using or a different building all together to see if that supplies a charge or even powers up the laptop without the battery in it.

Let us know how it goes!
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