Question about ViewSonic VA721 17" LCD Monitor

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Viewsonic va721 monitor

My monitor goes blank for about 2 seconds every two minutes or so. I have checked the coneections, updated the drivers and no luck.

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  • lordsins1 Mar 24, 2008

    my viewsonic va721 screen goes black and you cant see anything after 1 hour . i checked all the cables and everything was good.

    this problem also happens when i restart my computer , my pc turns on but my monitor doesnot show any thing..

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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.

Posted on Nov 29, 2007

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Posted on Jan 02, 2017

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good day,
maybe there's a problem with your VGA or the cable wire that connects the monitor and VGA....try to approach technician near to you.....

best regards,
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this is only an educated guess based on my years of computer and electrinics experiance. I believe the problem is the AC inverter that supplies current to the monitors back light,it powers up and fails. the monitor is working but without the back light you get a blank screen.The problem is fixable, but the delema is that for a technician to troubleshoot and repair the problem may cost as much as replacing the monitor since the prices have dropped so much in the last few years.

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