Question about ViewSonic VP191b 19" LCD Monitor

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Screen goes blank after a few minutes

My ViewSonic works fine when I boot up my machine. However, after a few minutes the screen goes blank but the power light remains on green, i.e. it hasn't gone into standby. If I unplug the screen from the power, leave it a while and then plug it back it in it will work for a few more minutes and then do the same thing. It's nothing to do with my power settings and other monitors work fine.

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  • Anonymous Mar 22, 2014

    screem powers up no display, screem remains black, monitor goes into standby mode after a few minutes

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Hi if your sure that all the power settings of the screen and the comp are fine then it points to 1 reason: the screen is heating up and the automatic circuit shuts it down... try locating it some cooler place or put a vent behind it... see if it does any help if soo set it in a cool place good luck

Posted on Mar 16, 2006

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Posted on Jan 02, 2017

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My viewsonic monitor has stopped working. When I boot my machine the start screen flashes and then the monitor goes blank. As the boot process continues, each new page flashes briefly then the screen goes...


Viewsonic LCD?
If you are going to DIY and have proper tools and know safety precaution then please read on:
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), blown fuses; poor solder joints, 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://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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Blank Screen


Common problem in monitors are bad caps in the power supply, that is the first place to check, look for bad caps with bulging top/bottom, see example of failed VIEWSONIC monitors due to bad caps here (worst case will be bad lamps): http://s807.photobucket.com/home/budm/allalbums
Post back what you see so we can help you further.

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Look for bad caps in the power supply first, see example of failed VIEWSONIC monitors due to bad caps here: http://s807.photobucket.com/home/budm/allalbums
Post back what you see so we can guide you furhter.

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1. You can see images on the screen for a few minutes. That means there is nothing wrong with your computer.

2. When your screen goes blank, if you disconnect and then reconnect the monitor, it shows fine again for a few minutes before going blank (or dim) again. That means the problem is not with you video card.

3. It always shows the image after reconnection for exactly a few minutes before going blank again. yes? this means that there is nothing wrong with your cable.

Conclusion: Sorry, but you do not have many options. I bleieve that the problem is with your monitor that's going bad. Its far cheaper to get it replaced than to repair it.

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Screens works for 5 mins then goes blank!!!!!


It could also be that the video card is not compatible with this monitor. After the pc boots up, can you get into windows? Does the monitor always go out at a specific time on boot? Say for example; you boot the pc, windows startup splash screen comes on; screen does a quick flash and goes blank. Then it maybe the BIOS setting for the video. Try changing the IRQ setting. You could also try putting the video card in another slot. Do you have the manual for the motherboard? Ray

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