Question about ViewSonic VX900 19" LCD Monitor

1 Answer

VX900, Backlight Works, But no picture.

I got it basically for $5 because it doesn't work, so I figured it was worth it if it can't be fixed.

• The unit powers on fine, power led stays green.
• Without a cable plugged in, it says no signal then goes blank and power led turns amber.
• When I plug in a VGA cable (have not tried DVI-D as they are $35 around Toledo) the power led turns green, the screen lights up, but it is a black picture.
•I have taken it apart and visually inspected all the boards, and everything looks fine.(such as the caps, resistors, fuses "Look" okay, coils, wires, everything)

I don't have a multi-meter, so I can't check things as well as I could.
If anyone has any ideas, please let me know and thank you in advance.

Simon.

Posted by on

  • Bruce Smith
    Bruce Smith Feb 15, 2009

    When I turn the monitor on, the screen comes up all white and displays "BURN IN ON" for about fifteen seconds, then goes away leaving the screen still all white. No buttons do anything except the on/off switch. The power supply measures 12.03 volts. Sorry, I haven't opened it up yet. I fix medical equipment for a living, not monitors, but am willing to give it a shot. Have scope, DVM and plenty-o-tools.

    Any ideas/suggestions?

×

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • ViewSonic Master
  • 1,635 Answers

It is impossible to see defective components visualy, unless there was a serious burn-up or something like that.

Without at least a DVM you cannot even verify if the power supply is functioning properly!!!

There is no support at the component level service for these monitors. The service tech will change the main input board to solve the fault that you have. If the back plane lamps are failed, he will change the power supply for the back plane lamps. In some of these models, the back plane lamps are not replaceable. This means that the screen would have to be replaced.

If you want to service the monitor the non supported way, call Viewsonic and see if they will sell you a copy of the detailed schematics, and engineering data for the boards. Most monitor companies will not sell any schematics or service information to no authorized contractors for their service.

If you can have the details, get a digital scope, a DVM, a logic analyser, and start troubleshooting according to the service manual. This can involve hours of work to figure out the fault. Then you will have the task of seeing if Viewsonic will sell any of their proprietory EPROM's or processor type parts.

This is why when the warranty is finished on these monitors, they are not worth to send back for service. The shipping cost, plus the parts and labour can come out to more than the monitor is worth!

Jerry G.

Posted on May 19, 2008

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Lost remote for ViewSonic 19" VX900 Monitor.


Please verify the model number since VX900 is just a monitor, it does not have any remote function, http://s807.photobucket.com/albums/yy352/budm/Viewsonic%20VX900/

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm/

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.
Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.

Apr 13, 2011 | ViewSonic VX900 19" LCD Monitor

1 Answer

VX900 19 in. Flat Panel LCD Monitor: when i turn it on the screen is black....


You may have backlight inverter failure, check the fuse as shown in my pictures, you can also have bad backlight assemblies also, but check the fuse on the inverter bd first, verify that you do have 12v at the fuse.
http://s807.photobucket.com/albums/yy352/budm/Viewsonic%20VX900/

May 16, 2010 | ViewSonic VX900 19" Flat Panel LCD Monitor

1 Answer

No Picture, connected and powersource connected but just a black screen


There are two places to look for the problems, the backlight inverter board and the power supply, look for burnt parts, bad capacitors, etc.
http://en.wikipedia.org/wiki/Capacitor_plague
Please post back what you find.

Nov 25, 2009 | ViewSonic VX900 19" LCD Monitor

3 Answers

Lcd monitor goes black


Try a different monitor (a friend's) on your computer, if it works OK the problem may be with your monitor. If it does the same as on your monitor, the computer video card may be defective.

Try your monitor on a different computer (a friend's) etc. You will figure if anything or what is defective. Then you can decide to repair or replace.

May 31, 2009 | Apple Multiple Scan 1705 Monitor

2 Answers

I noticed a post you made about the Viesonic VX900 and fuses


I think you have bad CCFLs, (Cold cathode fluorescent lamps) they look like small flourescent lights and are used to light the screen. On smaller than 17" screens there are two, one on top and one on the bottom. 17" and larger monitors have 4 with real big ones having 6. If you attempt to change them be very careful not to crack the screen and remember the order of all the layers of the screen. The cost of the CCFLs along with the difficulty in doing this repair makes it not worth most peoples trouble....good luck

Aug 10, 2008 | ViewSonic VX900 19" LCD Monitor

1 Answer

Vx900 dispays for a second and goes blank.


is the vx922 worth fixing? my neighbour found it now i trying to fix it. wheres the capacitor, or the other thing to look at, as the screen goes black but button stays green..... i need diagram or simple play by play.

Apr 17, 2008 | ViewSonic VX900 19" LCD Monitor

1 Answer

Monitor isn't working


just replacing the fuse should help. There are two of them on the inverter board. depending on which one is blown will give you 2 different issues. One will cause the screen to flash content perfectly for two seconds and then drop out. the other will be really dark if can see any picture at all,

Feb 10, 2008 | ViewSonic VX900 19" LCD Monitor

3 Answers

Viewsonic VX900 blank screen


Here is a pic of the fuses on the inverter board for a Viewsonic vx900, you can visually inspect them as well if you do not have a volt meter. While visual inspection is not 100% reliable, usually when these are popped you will see the red line across them is black or broken.
82dd678.jpg

Dec 06, 2007 | ViewSonic VX900 19" LCD Monitor

Not finding what you are looking for?
ViewSonic VX900 19" LCD Monitor Logo

286 people viewed this question

Ask a Question

Usually answered in minutes!

Top ViewSonic Computers & Internet Experts

Brian Sullivan
Brian Sullivan

Level 3 Expert

27725 Answers

Les Dickinson
Les Dickinson

Level 3 Expert

18333 Answers

Cindy Wells

Level 3 Expert

4809 Answers

Are you a ViewSonic Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...