Question about ViewSonic VA702b 17" LCD Monitor

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Viewsonic VA702B When I push the power button the screen comes on and display a image for about a second. Then the image goes to black and the power light stays green. Does anyone know what is causing this?

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  • jgs127 Aug 18, 2008

    When I turn on my monitor, the screen flickers and then goes blank. The green light stays on . Somitimes the screen doesn't even show the desktop picture-it just stays blank.

  • enh1988 Sep 25, 2008

    Mine does the same thing however, the light starts flashing.

  • wowspaman Sep 28, 2008

    I have the same issue with my veiw sonic monitor. It goes blank after one second of being on. I have found that if you push the power button on and off several times sometimes you monitor will work. My guess is that it is a short near the power button. BTW it isn't a lose power or data supply.

  • Anonymous Sep 29, 2008

    i took the back off. Nothing is loose that I can see. button stays grren but monitor goes black i dont have time to keep pushing the button on and off
    its right here witht he cover off. could it be the pins need to be replaced?.

  • Anonymous Jan 06, 2009

    We have two VA702b (manufactured date MAR 2006) with the same symptom: image for a split second, then blank screen when powered on. Luckily for us, both monitors are still within the three year warranty.

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Monitor going black after a few seconds can be caused by a faulty power supply or inverter. Some monitors have both as one unit.
Sometimes it is basic failed capacitors, After that then I would look at transistors.
The average monitor from 17 to 20 and sometimes the 22s have usually 4 bulbs in them. One bad bulb will also cause the inverter to not fire up.
Bad bulbs usually show pinkish tint, or flickering or are dark at center top or bottom of the display.
ebays bammbammfran

Posted on Oct 05, 2008

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Their is a lose on the monitor data cable

Posted on Jul 28, 2008

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1 Answer

My viewsonic va702b will flicker on for less then a second then goes off. The green light stays on but has a black screan. Whats goin on.


This is a common problem with this model. The capacitors in the power supply board have failed and are preventing the unit from powering up. Here is a link to a repair kit with the correct capacitors and a pictures showing where the one are located that need to be replaced. Very easy repair.

http://www.ccl-la.com/catalog/product_info.php?cPath=21_34&products_id=218

Jun 23, 2012 | ViewSonic VA702B 17" LCD

1 Answer

Hi i have a problem about my lcd viewsonic va702, when starting my computer i can see the image for 1 sec then it turn black ...lcd light is ok and computer too already tried with other lcd all works fine...


this works for Dell monitors with a similar problem: shut down, turn off monitor and pc, turn off at wall socket, and remove power plugs from wall socket. wait about 30 seconds. plug back in, turn on, and all should be well? I have used this 3 times on a Dell PC with a Viewsonic monitor.

Dec 23, 2010 | ViewSonic VA702b 17" LCD Monitor

2 Answers

The Screen comes on for 1 second then goes black but you can still faintly see the image on the screen


It can be as simple as bad DC filter caps (leaking/bulging tops), that will be the first thing to look for, it can be more serious problem in the inverter circuits or bad CCFL assemblies.
http://s807.photobucket.com/albums/yy352/budm/Viewsonic%20VG2021/

Failed TV and Monitors: http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague
Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

Sep 06, 2010 | ViewSonic Graphic VG2021m LCD Monitor

1 Answer

There is a green light blinking abo the power button and the screen is black.


Unplug it from the mains, then try again. Does the screen show any sign of like (e.g. startup logo)?
Does the screen work on another computer?
Is the signal cable properly connected at both ends?
Does the PC work ok on another screen.
If still no joy, new ones are cheap - get a nice big one.

May 16, 2010 | ViewSonic VA702b 17" LCD Monitor

1 Answer

Viewsonic VX710 Monitor scrren goes black


replace all caps on power supply board check values
should not cost more than 20 us. and 1 hour soldering
easy fix but new monitor goes around 100 us.
can you do it???

May 10, 2010 | ViewSonic VX910 19" LCD Monitor

1 Answer

Viewsonic VG2021m Image Vanishes on Start Up


Hello,

It is the picture picture board on your monitor that is malfunctioning, since the power led or button is on, but the display screen goes blank after a few seconds, it means the picture board of your monitor has developed fault.

The best thing for you to do now is to take the monitor to a local repairer within your vicinity or any service center to help with the replacement of the picture board because the fault is not something you can fix yourself, in order not to complicate issues.

Take care.

May 07, 2010 | ViewSonic Graphic VG2021m LCD Monitor

2 Answers

Getting black strip on every side


It sounds like you need to roll back or uninstall the driver for the monoter of force reinstall the drive by selecting do detect i will chose driver to install. if i had to bet on it id say thay the issue lies with your video driver not lcd driver

Sep 21, 2009 | ViewSonic VA702b 17" LCD Monitor

1 Answer

Monitor flashes on then goes black.


I think you have the display shut off. the button on the bottom left will shut screen off. It will come on for a few seconds if you touch the screen, but will shut off again. just push the display button again and it should stay on.

Apr 02, 2009 | ViewSonic OptiQuest Monitor

1 Answer

Flashing on and off


your TFT monitor haveing Power supply Problum please contact if you are in mumbai india on 9820068101 he will come and change your supply

Aug 15, 2008 | ViewSonic VA702b 17" LCD Monitor

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