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CRT Monitor and

At my current job I am using an older computer (Windows ME era so to speak). it Currently has Windows XP home and a Nvidia Vanta card. The problem is possibly not monitor related as I have tried two different CRT's. The only words I can use to describe this is "stretch ghosting" or "shadowing" as my IT experience is very limited.

Here is a screen cap of the visual bug:
Any ideas?

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  • mrmagoo86 May 05, 2008

    That is the thing. I know for a fact that my current CRT is working fine. It rand beautifully on my computer back home. I have a suspicion that it is something related to the actual computer/video card rather than the monitor.

  • Anonymous Dec 20, 2008

    same rpoblem to me with a samsng syncmaster 940N monitor, but what makes me think it is not related to the monitor is that it creates a right shadow for every object, except for the mouse

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The pot (variable resistor / preset on the circuit board inside the monitor) in the horizontal sync section needs cleaning, replacing & adjusting. but before that try the horizontal adj on the front panel of the monitor. Every monitor (digital or analogue) has it. Only if it doesn't clear the problem, try opening the monitor. Be careful so as not o venture too close to the EHT transformer.
Also make sure to degauze the CRT by earthing it (after switching it OFF) before toching any components inside. Also when you adjust the preset, make sure to use a highly insulated flat screw driver and wear heavily insulated rubber / PVC soled shoes because you'll have to adjust it with the monitor Powered ONonly then you'll be able to see the results. For your convenience, put a mirror in front of your monitor when you adjust the preset on the circuit board. Also make sure that you don't turn the preset very fast or put excess pressure on it as it may brea causing further damage to the circuit board.

Better still, if you don't wish to go deep into all this stuff, get it repaired by an authorised technician.

Posted on May 05, 2008

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It sounds like a driver/software issue. When you ran the Princeton VL173 on XP you probably had all the correct software for your video card and the correct drivers to support your video output. When you changes OS to Windows 7, the XP drivers are no longer in place. My best guess is that you need to find and install the correct drivers for your system video and for your video card that are Windows 7 compatible. The old XP drivers will not work in Windows 7.

I am running XP with a Princeton VL173. It works great. I identified the correct video drivers for my system and installed them. My video card is nVidia 8800GT. I downloaded and installed the latest software from nVidia and installed it. It runs like a champ.

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I hope this helps.

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Thank you for providing your configuration details.
You have failed to specify wheather or not your LCD Display is under Warrenty.

Perhaps these simple trouble shooting procedures will get the job done.

1. use the DVI to VGA adaptor that came with your card

Plug in a regular CRT monitor to the Primary Display Output Port using the DVI to VGA adaptor
( either port can be designated as the primary by you )
I like to use the Port nearest to the motherboard as the Primary

2. plug in the your LCD monitor on Secondary Display port using your DVI cable

At this point you should be able to see your desktop on the Primary CRT Display

3. Go to the display properties and use the Nvidia Dual Display Setup Wizard

set both desktops to CLONED at a resolution of 1024x768 and set the refresh to 60Hz
which is default for most LCD displays , some have higher refresh rates , consult your user manuel

If the display resolution and refresh are set incorrectly for your CRT or LCD you will see
Signal Out of Range ( if the display has the ability to display that error message )

At this stage both displays should be showing a Windows Desktop

If you now see your desktop on both displays , you can now put the LCD on the Primary Port



No Signal Detected ( this means the display device is not receiving a signal )

If your LCD display is still displaying the error message
"No Signal Detected" after performing the trouble shooting proceedures
You may need to read the user manuel about how to enable DVI signal input.

If you are certan you have done everything correctly but still see only "No Signal Detected"

Your LCD Display may need replacement

Loch Hime :-)

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