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Laptop Screen shows no Video, External monitor does

I have a Dell Inspiron 6000, I replaced the motherboard and did a new install of windows. A couple of days later my laptop screen stopped showing video, But works with an external monitor. I replaced the LCD Inverter with a new one and the screen worked for 2 days. I then ordered a new LCD ribbon cable to no avail. I then ordered another LCD Inverter still no video on Laptop Screen, but I have Video with external monitor.I have also tested with another LCD Screen. Any suggestions with what can be going on why I can't display on LCD Screen. Thanks to all who can help!
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seanb1215
Asked:
seanb1215
1 Solution
 
davorinCommented:
It could be the lid switch.
This post may help you:
http://en.community.dell.com/support-forums/laptop/f/3519/t/19163065.aspx
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dbruntonCommented:
Check and see if there is a very faint image on your LCD screen.  If there is could be the backlight that is faulty rather than the inverter.
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Grant1842Commented:
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seanb1215Author Commented:
After some research on the issue further! I have found the problem. I have worked over a hundred laptops and never had this problem. The magnetic lid switch, thanks everbody. @ Davorin your suggestion led me there thanks.

http://en.community.dell.com/support-forums/laptop/f/3519/t/19163065.aspx

All I can say is wow!
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seanb1215Author Commented:
Thanks bro
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seanb1215Author Commented:
One more thing, It took a little slapping along the touchpad to get the video to display. Now I will take it back apart and fix the issue..
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