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Lcd screen goes black after a few seconds

I have a viewsonic monitor that goes black. It says analog in a blue box in the center of the screen first, then goes black. I turn the monitor off and then back on and it shows the screen for a second and then starts all over agaian with the analog and going black

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Check your vga cable that is connected on your cpu,for some lose connection,it must be fitted if you still don't get any display check your cpu.have some other monitor for isolation,if you dont have bring it on s repair center,your cpu has a problem.

Posted on Sep 10, 2009

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Posted on Jan 02, 2017

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2 Answers

The Screen comes on for 1 second then goes black but you can still faintly see the image on the screen


It can be as simple as bad DC filter caps (leaking/bulging tops), that will be the first thing to look for, it can be more serious problem in the inverter circuits or bad CCFL assemblies.
http://s807.photobucket.com/albums/yy352/budm/Viewsonic%20VG2021/

Failed TV and Monitors: http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague
Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

Sep 06, 2010 | ViewSonic Graphic VG2021m LCD Monitor

1 Answer

My ViewSonic VA712b monitor blacks out for a second or two and then works normal. It may happen `5x/HOUR. It may be stuck in analog but I tried both analog and digital and it does it in both. A little blue...


It may be indicating that the power supply may be failing. You may want to look inside for bad caps in the power supply section.
I believe this is same chassis as VA921B: http://s807.photobucket.com/albums/yy352/budm/Viewsonic%20VA912B/
Please look through my albums to see failed monitors due to bad caps.
http://en.wikipedia.org/wiki/Capacitor_plague
http://www.badcaps.net

May 12, 2010 | ViewSonic VX924 19" LCD Monitor

1 Answer

Viewsonic VG2021m Image Vanishes on Start Up


Hello,

It is the picture picture board on your monitor that is malfunctioning, since the power led or button is on, but the display screen goes blank after a few seconds, it means the picture board of your monitor has developed fault.

The best thing for you to do now is to take the monitor to a local repairer within your vicinity or any service center to help with the replacement of the picture board because the fault is not something you can fix yourself, in order not to complicate issues.

Take care.

May 07, 2010 | ViewSonic Graphic VG2021m LCD Monitor

1 Answer

VX 910. Goes to black every 10 to 15 seconds then comes back on after 3 to 5 seconds With ''analog'' displayed in the lower right corner. Happens when connected to 2 different computers.


hi my lcd AL1916 acer monitor keeps going black or loosing signal after 2 or 3 sec. i press the moon on my keyboard 2 times it comes on then off again please help

Aug 11, 2009 | ViewSonic VG930m LCD Monitor

1 Answer

Screen dialoge analoge and turns black i have no credit card then i dont know how to pay for asistance


I'm assuming turns black and blue then turns off? First make sure your connectors to your monitor and back of pc are secure. But it sounds like your video card needs to be reseated.

May 24, 2009 | ViewSonic VA721 17" LCD Monitor

1 Answer

About a problem in my viewsonic monitor


Hi

Actually the common problem of viewsonic LCD monitor is bad electrolytic capacitor at primary, secondary & inverter area, if your lcd using power adaptor test the voltage out, use analog or digital tester range 50v dc, if the voltage out is accurate dont be sure to your adaptor working good, open it and find bad electrolytic capacitor inside. That is common problem of viewsonic LCD monitor could cause of display flashing then back to black after few seconds. Suspect inverter area lastly mainboard.

Gud Luck!

Oct 06, 2008 | ViewSonic VE710s  (Black, Metallic...

2 Answers

Viewsonic VA702B


Monitor going black after a few seconds can be caused by a faulty power supply or inverter. Some monitors have both as one unit.
Sometimes it is basic failed capacitors, After that then I would look at transistors.
The average monitor from 17 to 20 and sometimes the 22s have usually 4 bulbs in them. One bad bulb will also cause the inverter to not fire up.
Bad bulbs usually show pinkish tint, or flickering or are dark at center top or bottom of the display.
ebays bammbammfran

Jul 28, 2008 | ViewSonic VA702b 17" LCD Monitor

1 Answer

Viewsonic VG919S 19" LCD


Hi

You must focus to mainboard of LCD monitor find the voltage regulator IC. Voltage test the regulator IC use digital or analog multimeter range 10v dc connect the negative to cold ground, these regulator providing a constant supply of 2.5 - 5v to all IC in the mainboard. check the scalar IC. Because scalar IC will convert analog input signal of Red, Green & Blue. Lastly check the controller board, check the ribbon cable connector from mainboard to
controller board for lose, check the fuse inside controller. I think the exact problem of your monitor could be either the (mainboard) or (LCD panel where the controller board is located).

Oct 06, 2007 | ViewSonic VG910S (Black, Silver) 19" LCD...

1 Answer

ViewSonic VX2235wm LCD Monitor


hello do you still have the monitor maybe i can trade you something for it i could use the parts to fix a unit i have lmk thanks

Sep 08, 2007 | ViewSonic VX2235wm LCD Monitor

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