20 Most Recent ViewSonic VA721 17" LCD Monitor Questions & Answers


The monitor is probably set to sRGB under "color adjust".

Change it to 6500K, which is default, and you should be able to adjust brightness and contrast.

ViewSonic VA721... | Answered on Oct 02, 2014


You may need to send in unit for service because your unit is unable to go to sleep mode when the signal cable is disconnected or the PC is turned off. Please call ViewSonic Customer Care for support.

Although this will not hurt the monitor, you just need to apply an active video signal to get a display correctly. However, it will not work as expected to go into sleep mode. You'll need to call ViewSonic Customer Care to get this taken care of.

ViewSonic VA721... | Answered on Aug 31, 2014


Usually this means either your cable isn't connecting properly to your computer or there is a compatibility problem between the monitor and the computer. Are you getting the "no signal" message AFTER you have connected the machine to a working/ turned on computer? Because the monitor will ALWAYS say "No signal" if it isn't hooked up to anything. Also, you will want to verify that none of your pins (from the end of the cable) is missing, and that your cable is firmly seated into the port on your computer. Other than those things, you really need to say a lot more than just, "The monitor turns on but says 'no signal'" for anyone to be able to assist you.

ViewSonic VA721... | Answered on Jul 28, 2014


Can you still see the boot up screen when you start your machine up?
If you do, then restart the system.
As it's booting up, you tap F8 until you get a menu. Select "Last Known Good Configuration". That will help if you installed a bad driver for your graphics.
If that doesn't help, or if you don't get a picture at all, plug the monitor into another computer and see if it works.
If the monitor works and you still can't get a picture after following the aforementioned steps on your computer, you may need to replace the video card on your system.

ViewSonic VA721... | Answered on Dec 25, 2013


the brightness and contrast controls should be on your monitor and are easy to change hope this helps and good luck regards Jim

ViewSonic VA721... | Answered on Jul 01, 2013


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

ViewSonic VA721... | Answered on Feb 04, 2013


Have you tried seeing if the menu button is jammed?

ViewSonic VA721... | Answered on Jan 17, 2013


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

ViewSonic VA721... | Answered on Dec 30, 2011


I think the buttons for teh OSD are stuck or something like that ...The window is from the OSD system (on screen display ) and it is controlled by the buttons on the monitor itself..The square icon one is for the menu //the = and - for values(the yellow line .) ..and the other one is for the auto-arrange..Try first to be sure there is no button malfunction ..and after that get in the menu and rest to the optimal values...or press the auto-arrange ..Anyway if it is not a setting problem that it is something wrong with one of the buttons ..and it remains pressed and brings that menu page on screen so ..try to jiggle the buttons a little ..maybe like I said one of them is in permanent contact for some reason ..

ViewSonic VA721... | Answered on Jul 27, 2011


Check the speaker connections. if speakers in monitor make sure usb cable is connected to monitor and computer.

ViewSonic VA721... | Answered on Mar 09, 2011


VA721? Look for bad caps as shown here: http://s807.photobucket.com/albums/yy352/budm/Viewsonic%20VA721/

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm/

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.
Please leave rating if it helps.

ViewSonic VA721... | Answered on Feb 08, 2011


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.

ViewSonic VA721... | Answered on Feb 03, 2011


Please look for bad caps (bulging top), please see my pictures and read below before DIY:
http://s807.photobucket.com/albums/yy352/budm/Viewsonic%20VA721/

Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.
http://en.wikipedia.org/wiki/Capacitor_plague

http://www.badcaps.net

ViewSonic VA721... | Answered on Feb 02, 2011


PM me for service manuals that may help you, budmrtn@aol.com

ViewSonic VA721... | Answered on Dec 29, 2010


Look for bad caps as shown in my pictures here: http://s807.photobucket.com/albums/yy352/budm/Viewsonic%20VA721/

If you are going to DIY and have proper tools and know safety precaution then please read on:
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), blown fuses; poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.

Basic LCD monitor troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

http://en.wikipedia.org/wiki/Capacitor_plague
Learn about bad caps: Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

ViewSonic VA721... | Answered on Nov 14, 2010


Look for bad caps, shorted transistors, etc. See my pictures here:
http://s807.photobucket.com/albums/yy352/budm/Viewsonic%20VA721/

Please read my guide and learn about bad caps and look at the pictures of failed VIEWSONIC and all other brands of monitors.
If you are going to DIY and have proper tools and know safety precaution then please read on:
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), blown fuses; poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.

Basic LCD monitor troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

http://en.wikipedia.org/wiki/Capacitor_plague
Learn about bad caps: Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

ViewSonic VA721... | Answered on Nov 10, 2010

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