Question about ViewSonic VA720 17" LCD Flat Panel Monitor

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I have a ViewSonic VE910b 19" That the display stays black

I have a ViewSonic Ve910b 19" I got it in 2005. The other day I turn it on and the screen flash like it was trying to come on. I could see the desktop just alittle bit. I turned it off and back on. Now the screen is Black and then on light flashes green for abit then goes off. I know it is the LCD Monitor Because I buy a new Veiwsonic 22" and it works fine. If you can help me it would be great THANK YOU

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  • siuolus Apr 24, 2009

    I have a very similar issue: When I turn it on, the screen flashes like it's trying to come on. This continues for several minuters until it finally stays on.

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  • 46 Answers

What your both experiencing is a slow degradation of the inside light bulbs. Just like what happens to regular fluorescent bulbs, they slowly flicker out.

Best to buy a new monitor.

Take apart your old one, you'll find burnt out bullbs on the upper and lower chassis deep inside.

Posted on May 24, 2009

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Posted on Jan 02, 2017

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If you have been using this monitor for some time, it's possible that the CCFL backlight is starting to wear out. That would mean it is time to buy a new units. Backlights are not a usual item that is serviced by replacement. Otherwise, there could be an issue with the backlight circuitry or there may even be a failure of the main board. Advise taking it in for service to get a more accurate diagnosis.

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It does the same when attched to another PC? Otherwise it may have bad caps prblem like the 17" version as shwon here: http://s807.photobucket.com/albums/yy352/budm/Viewsonic%20VE710B/
which is very common to LCD monitors that are more than 2 years old.

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 pictures: 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.
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The backlight inverter is failing or the power supply feeding it is not good.
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://www.badcaps.net
http://en.wikipedia.org/wiki/Capacitor_plague

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