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Question about ViewSonic VX724 17" LCD Monitor

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Monitor failure When I turn on the computer the monitor flashes on and off for a few seconds and in the bottom right hand corner you can see the word analog and then the screen will go blank and the monitor shuts downand can not be turned back on

Posted by Nadine Veed on

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  • M3thod Nov 11, 2007

    my viewsonic v724 is crazy when i went to bed it was fine when i woke up it was in normal sleep mode wheni tryed to take it out it began to power on and off on and off tryed to reboot and all diff connections i can see flashes of the loading windows screen but the power lights clikcs on and of rapidly anyone have an idea of what is wrong if i can fix it or just buy a new monitor this problem is robbing me of my gaming time can anyone help

  • kblee May 18, 2008

    same problem. anyone has a solution?

  • kblee May 18, 2008

    same problem. anyone has a solution?

  • Anonymous Jul 22, 2008

    i got the same problem power and screen blinks on and off

  • SigurdVader Apr 16, 2009




    Traceelectro,

    I have exactly the same problem on the VX724 I purchased April 2006.

    I have already replaced a few electrolytics that have dried out and bloated but still the on/off cycle continues.

    Care to share which transistors did you replace? They're my next target.

    Thanks!

    SigurdVader

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Anonymous

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I have just cracked open a Viewsonic VX724 monitor with the same problems mentioned above. This is a power supply issue. As I am a technician I can repair my power supply by replacing a few capacitors and a couple of surface mount transistors on the back of the power supply PCB. If you aren't a technician than I would suggest you weigh the cost and either source a new powersupply and install it or scrap your monitor.

Dillon, Trace Electronics, Barrie ONT, Canada

Posted on Apr 11, 2009

  • Anonymous Apr 20, 2009

    Hi,



    The power supply has 2 circuits that drive the back lighting for these monitors - Identified by the small connectors that you have to unclip when you remove the power supply. Well, there are two small step-up transformers directly infront of these small connectors. If you notice a brownish burn-in on your board then the side with the browning is the faulty side. Replace the transformer...and the two small transistors directly underneath on the solder side of the PCB. I am still researching,,trying to find a xformer. I would normally get these from a scrap board...but no boards here.



    Trace Electronics

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Anonymous

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There are bulbs that light up the display so you can see it on the inside. They go out, just like the bulb in your bathroom. No way to fix this and get the dam thing back together. Toss it and get a new one. I've got photos of the one I took apart. It's a mess. But very cool to look at.

Posted on Dec 12, 2008

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VX724 17" LCD Monitor

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