Question about ViewSonic VA721 17" LCD Monitor

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Dismanteling monitor/replacing backlight

Got the ViewSonic VA721 need to replace backlight but cant get the damned thing open?

cant seem to get hold of a service manual either :(

Can anyone help?

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  • MadMunky Jan 14, 2008

    GR* help many thanks :)

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Http://www.eserviceinfo.com/downloadsm/6598/jean_ve710s-2.html

Go to bottom of the page to download the PDF . It has complete instruction and pictures

Posted on Jan 12, 2008

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Posted on Jan 02, 2017

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Hi! My Viewsonic VA721 LCD Color Monitor's screen is getting darker over time. I've had it for about 5 years. Is it just getting "old" and worn out or is there something I can do to correct...


It can be that the power supply is dying due to bad caps (or worn out backlight lamps) as shown in my pictures here:
http://s807.photobucket.com/albums/yy352/budm/Viewsonic%20VA721/
It is old monitor so it may not be worth spending on it.
Please leave rating if it helps.

Feb 02, 2011 | ViewSonic VA721 17" LCD Monitor

2 Answers

Backlight not working


Are you sure it is the lamps not the backlight/power supply problem?
http://s807.photobucket.com/albums/yy352/budm/Viewsonic%20VA721/
If you are really good at soldering delicate components and very steady hands, you may be able to do it.
Lamps: www.lcdparts.net

Jul 07, 2010 | ViewSonic VA721 17" LCD Monitor

1 Answer

How to disassemble


There is ccfl(cold cathode fluroscent lamp) tube which is faulty therefore no light is there the ccfl tube operates on 600vac with 40khz-60khz so check 600vac to the tube if no voltage is there then check circuit and to open see any locks available there if no screw is observed take a smallest screwdriver (preset alligner)to open the lock

Mar 13, 2010 | ViewSonic VA721 17" LCD Monitor

1 Answer

I lost my installation CD for my ViewSonic VA721 monitor; can I get a download from the internet?


Yes here is a link to the drivers for your monitor> http://driverscollection.com/?H=VA721&By=ViewSonic
Thank you for using Fixya.com

Feb 09, 2010 | ViewSonic VA721 17" LCD Monitor

1 Answer

I need a driver for my va721 monitor


ViewSonic VA721 VA721 Monitor Driver ... Login. Register ... Uninstall Windows drivers How to Uninstall Windows Drivers and why you need to know it ...www.nodevice.com/driver/VX500/get36507.html

Dec 06, 2009 | ViewSonic VA721 17" LCD Monitor

2 Answers

My viewsonic va721 spontaneously took on a very greenish tint that will not go away. i had been connecting the monitor back and forth between two CPUs while I change over to a new computer. Can the green...


Make sure you did not bend any pins also make sure of that fact on both ends if not there has to be a solder connection inside that has faultered on you. The unit will need to be opened up to verify solder connection- Thanks

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/edwy_1a56970cf1ea4620

Aug 07, 2009 | ViewSonic VA721 17" LCD Monitor

1 Answer

Viewsonic VA721 - Screen goes blank for second or two and returns


Sounds like its going to sllep too soon make sure you do not have it set in your video card settings. also try it on a diffrent computer. if that does not shore it up replace the acpi board

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/edwy_1a56970cf1ea4620

Jun 11, 2009 | ViewSonic VA721 17" LCD Monitor

1 Answer

Viewsonic va721 monitor


Connect the monitor to a different computer system (if available) to see if the issue is with the video card or the monitor.
Make sure A/C power cord is securely connected to the LCD display.
Make sure the video cable supplied with the LCD display is tightly secured to the video
output port on the back of the computer. If the other end of the video cable is not attached
permanently to the LCD display, tightly secure it to the LCD display.

Your backlight may be going bad, or the small controller board may be going bad also.

Nov 29, 2007 | ViewSonic VA721 17" LCD Monitor

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