A cloudy dim backlight in the screen

Hi,
I have a problem with the screen of my Toshiba Satellite A500-1HK laptop. It doesn't show anything but it has only a backlight (a cloudy dim light). Also it is ok when I connect it with an external monitor through its VGA output.
After all I fund in the internet that maybe the screen inverted has problem. But hey... this laptop has LED screen and someone in the internet said that LED screens has no inverters?
What can I do?
Thanks
nonlinearlyAsked:
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nonlinearlyConnect With a Mentor Author Commented:
Sorry.... I gave the laptop to a technician and I told me that the screen was the problem... So the solution takes me about 200 euro the screen and 40 euro the work... without taxes... thanks
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nonlinearlyAuthor Commented:
I have news...
I fund that in LED screens the inverter replaced from a fuse that resides in the motherboard... So I have to soldering or replace this fuse... But how can I find where it is and how can I extract the motherboard?
Thanks
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nobusCommented:
you need to open it- use the service manual, if available,
 or try this ;
http://www.youtube.com/watch?v=fo5easyIX0Y
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nobusCommented:
>>  it has only a backlight (a cloudy dim light).   <<  i think you understand it wrong; this light IS the backlight.
if you have no backlight, you can still see the screen if you shine on the screen with a flashlight.
it may be your video connector came loose -  you'll have to open it for checking that
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nobusCommented:
alot of suggestuions in your 2 questions - and it looks like you never tried one??
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nonlinearlyAuthor Commented:
I have the laptop to a technician...
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