Question about BenQ P992 19" CRT Monitor

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Monitor Flashing as soon as the power turns on the icons flash and the entire image looks like its shaking

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  • Anonymous Nov 10, 2007

    it works of a waile and it stops and than it works again but the most time that didn't wirk was for a week and than it worked agane help

  • Anonymous Jan 02, 2008

    I have the problem but with ACER LCD AL1717

  • Anonymous Mar 19, 2008

    Monitor is showing the desktop but is flashing so rapidly that mouse cursor cannot be located.

  • dmolini Aug 19, 2008

    The quick view from the outside panel keeps flashing on the screen scrolling from movie to photo to gaming to text to custom and adjusts the image as it scrolls, and I can't see through it because it is in the middle of the screen

  • tye dyed Nov 22, 2008

    i have a vx924 , and it has died. flashing led and the display flashes for a split second and then goes out for about 10 seconds. this scenario just repeats over and over. unfortunately it seems there have been no solutions posted. I was really happy with it up until this. i can not even check monitor options since it only flashes so fast and then goes black.

  • Anonymous Jan 25, 2009

    I have an e-machines monitor model 700G and as soon as it turns on it flashes off after 3 seconds. If I turn the monitor off and back on the same thing occurs.

  • Anonymous Feb 13, 2009

    I purchased a Model F 22 Acer monitor. The screen shakes but so I sent it back to Acer Service in Texas. They said it was fine and sent it back. I have a friend that was a tech at one of the big box stores he said stay away from ACER. I have found that the hard way. At this point I have the price of the monitor plus 69.00 dollars for shipping, no monitor and no way of knowing where it is. I do live in MD which means when I show the judge they have to
    fix the monitor and pay my lawyer.

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If these are lcd monitors, most of the time this problem is caused by bad caps on the power board. replacing the caps on the power board with a cap of the same value and voltage or slightly higher voltage value usually solves this problem.

Posted on Nov 18, 2008

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I've fixed a monitor with the exact problem. Had to resolder bad joints on the mainbord. mostly from the power components. Good Luck!

Posted on Jan 15, 2007

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Then it goes away? That sounds like the normal degauss feature is working.

Posted on Jan 12, 2007

  • William Miller
    William Miller Jan 12, 2007

    Sorry I didn't finish my post. Got interrupted.

    I posted that picture to suggest that you check your menu to see if you can find that (degauss) function.

    Select that, and it should do what you are describing.

    I don't think you have an actual problem.

    But post back if I'm wrong.

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Monitor Flashing


My best guess is that the monitor is trying to display outside of it's range. Set the resolution, color depth and refresh rate to the lowest settings and see if you have the same problems. Also, change the cable to a known working cable and keep the length short, like 3' or less. If the image still shakes, then it is an internal problem that would most likely be too expensive to fix.

I assume you know how to change the settings in Windows, but if not post back and I will help.

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1 Answer

Flashing Blue power light


Hi this is the way how to examine what's wrong with your LCD monitors. After you turned it on and the screen went black or stopped working, you have to check that if you can see the image on the screen or not by shining a flashlight into the screen, not directly but find the best angle to the screen and take a look very closely. If you can see the icons or any image, there will be a minor problem. This is because of the lamps inside screen. Some of them were broken and it is very easy to replace. If you cannot see anything on the screen, there'll be some problems with inverter board. If you have soldering tool and want to fix it by yourself, check the caps first. It may cause this problem. Some caps might show leaking or burn spot on the board because of too high temp. If you don't have soldering tool, you better go get a technician to do so. Hope this help!! If anything I can help you with, feel free to let me know.
Thank you,

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2 Answers

The screen doesn't display anything and the power button is flashing green


Ok I got the same problem. And this is the way how to examine where the problem is. You have to check that you can see the image on screen by shining a flashlight into the screen, not directly but find the best angle to the screen and take a look very closely. If you can see the icons (Power on both cpu and monitor), there will be a minor problem. Like me, I can see window image using flashlight and check lamps inside. Some of them were broken. If you cannot see any icon on the screen. I would say that there are some problems with inverter board. If you have soldering tool and want to fix it by yourself, check the caps first. It may cause this problem. Some caps might show leaking or dark spot on the board because of too high temp. If you don't have soldering tool, you better go get a technician to do so.

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1 Answer

Flat Panel Monitor the power button flash


Ok I got the same problem. And this is the way how to examine where the problem is. You have to check that you can see the image on screen by shining a flashlight into the screen, not directly but find the best angle to the screen and take a look very closely. If you can see the icons (Power on both cpu and monitor), there will be a minor problem. Like me, I can see window image using flashlight and check lamps inside. Some of them were broken. If you cannot see any icon on the screen. I would say that there are some problems with inverter board. If you have soldering tool and want to fix it by yourself, check the caps first. It may cause this problem. Some caps might show leaking or dark spot on the board because of too high temp. If you don't have soldering tool, you better go get a technician to do so.

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