Question about Sony SDM M51 15.1" LCD Monitor

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Dell LCD screen goes white

Screen now goes white immediately it the beginning it would go white after it was in use for a while. Now it is almost immediately. I have removed the cover from the back of the LCD panel. However I do not see any obvious signs of a component being bad....can someone direct me to the part that usually is the issue? I have two fo these monitors currently with this problem. Unfortunately I have several of these in use and I am concerned they too will start having the same problem.

thanks in advance for any help I have the same problem. When my monitor comes on it is all white and stays that way. I have connected it to a different computor and the problem is still there.

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Hi...there,
It's seems you got unstable AD board that caused a white screen. Need to be replaced a new ones or updated the bios. What's the AD board? AD board is a piece of component that connecting the VGA or DVI cables. Order from Dell... I'm sure they got lots of refurbished parts laid around... Have a nice day!

Posted on Oct 07, 2008

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Laptop LCD screen turned completely white
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2. Defective LCD screen.
3. Defective motherboard (I assume the graphics card is integrated into the motherboard).

When you turn on the laptop, it starts but the image on the screen is completely white right from the beginning.
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On Toshiba laptops you can toggle between internal and external screens using Fn+F5 keys. Hold down Fn and press on F5 until you get video on the external monitor.
On IBM laptops use Fn+F7.
On HP laptops use Fn+F4.
It’s possible that you have to use a different key combination on your laptop but you get the idea.
On some laptops, in order to be able to use the external monitor, you have to connect it to the laptop and then restart the laptop so the external monitor is detected by the laptop.
I noticed that in some cases the laptop screen may turn white because of poor connection between the video cable and the LCD screen. If you want to check this connection, you’ll have to take apart the display panel because the connector is located on the back side of the LCD screen.
I always check the video cable connection first. Reconnecting the video cable may fix your problem.
If reconnecting the video cable doesn’t help, most likely you have a problem either with the LCD screen or with the motherboard.
The best way to find out which one is causing the problem is testing the laptop with another working LCD screen. Without this test you’ll have to guess because as I mentioned before this could either bad motherboard or bad LCD screen.
You’ll have to disconnect the video cable from the LCD screen and the inverter board. After that you connect another working screen and test video.
The original screen is white but my test screen works normal and I can see the image. After this test I can tell that the problem must be related to the screen.
After I assembled everything back together and connected the original LCD, it’s still white.
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In my case this problem is related to the LCD screen and it has to be replaced.

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