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April 21st, 2012 03:00
Dell Vostro 3750 screen backlight problem. . . . .
Hello,
I have a dell vostro 3750 laptop, the screen broke so i replaced this, after i replaced this the backlight for the laptop did not work, if i shine a torch on the screen i can see the screen is working, just no backlight. I thought it must have been a faulty LCD replacement so i ordered another and this is doing the same thing.
I have now tried a new vga cable from the motherboard to the screen and still there is a backlight problem, absolutely no light from the screen.
What could be the issue please?
Many Thanks,
Danny
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ejn63
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April 21st, 2012 05:00
Is the screen the exact same as the one it replaced? If not, if it uses a CCFL backlight, did you change the inverter with the screen?
danbr
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April 21st, 2012 07:00
The screen is exactly the same as the original which was removed, it even worked for a short while. There doesnt appear to be an inverter board, unless this is built into the screen?
ejn63
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April 21st, 2012 08:00
If it's an LED backlit screen, it won't have an inverter -- and from the sound of it, there two possibilities - the new screen is faulty, or whatever happened to the system to damage the screen, also damaged the system board.