Question about Westinghouse Computer Monitors

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Lcd monitor 20.1

My screen in completely white. I hooked it up to another computer and it still doesnt work. Connected a monitor to this computer and it works fine. But my Westinghouse Lcd Monitor 20.1 in monitor is displaying only a white screen. Help me!

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  • meet0818 Sep 18, 2008

    thanks, we kinda figured that.

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  • Westinghouse Master
  • 5,568 Answers

The white screen is caused by a total lack of control over all pixels. The opposite effect; all black, happens when a failure turns all pixels on, blocking all but a small amount of light.
This could have more than one source; one output of the power supply has failed so the logic section no longer is receiving supply voltage or an external source has damaged the video input of the monitor. The backlight responsible for the white screen is obviously working as this is a separate power supply output to an inverter that powers the backlight lamp.  I'm afraid this is not a DIY repair.

Posted on Sep 18, 2008

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No display it is power is on


Hook up to external monitor .. Does the pre boot screen pop up (black and white writing at start ) ? If display runs on external monitor then your screen needs replacing usually or if you see a vague image on laptop screen then inverter or backlight is gone .. if no display on external and no pre boot screen probably the graphics chip on laptop has malfunctioned.

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When I power on my computer my monitor screen goes a solid whitish gray. worked fine yesterday, and then today nothing.


Laptop LCD screen turned completely white
What can you do if the laptop LCD screen turned completely white? From my experience I can tell that this problem may be related to the following:
1. Loose connection between the video cable and the LCD screen.
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.
Most likely you still can use the laptop with an external monitor. Just connect the monitor to the VGA port on the back or side of your laptop and then switch the video output from internal to external mode.
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.
CONCLUSION.
In my case this problem is related to the LCD screen and it has to be replaced.

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1 Answer

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1 Answer

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You've done sensible substitutions and it does sound like dead monitor.
The white screen is due to no pixels being controlled at all; what you are seeing is an unpolarized view of the backlight.

It's conceivable that a power supply problem is at fault in the display since it is unusual to lose all control over the screen as this has done.
The cause has to be common to all of the drive circuitry in the monitor and sounds like a job for a tech.

9 months? Is the warranty coverage known?
Unfortunately, warranties seem shorter all the time but it might be worth a shot to locate and email an inquiry to the manufacturer.

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it could be your screen jack is loose or damage white screen is coming due to back light is glowing only.it is better to take to some technician or service center.

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Hi Mike,
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One gets to open it up and find out where the signal from the computer is lay aside. Hunt up the model number on the inside of the monitor (the ODM part numbers) for the service manuals if you can use them. Otherwise you can call Gateway or look for a shop (sometimes even buy repair insurance coverage with the thing in that nonfunctional state.)

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