Question about ViewSonic VA912BWB 19" LCD monitor

1 Answer

Screen suddenly does not display image just

Screen suddenly does not display image, mostly black, with only short occasional flashes of color screen of desktop. The green light is on, showing it is getting electrical power. The monitor is a VA912B

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 11,361 Answers

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.

Posted on Nov 19, 2009

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

Occasional odd coloring and backlight flickering


Hi,
Please check it monitor color adjust button. If ok then you check it monitor cable if change possible then change it or power cable also proper connect. If not solved contact Good Monitor technician.

Thanks.

Feb 17, 2014 | Apple Cinema Display 23" HD Monitor

1 Answer

I have lenovo g550...my screen flickers in every 5minutes...


Failing Inverter An inverter, typically found inside a laptop computer, consists of a small board, which has impregnated electronic circuits stamped on it. Inverters look like thin boards about the of two sticks of chewing gum. The inverter and its bulb control the intensity of the liquid crystal display, which lights the screen monitor. The computer can control the output voltage of the inverter and either lighten or darken the screen. A special type of inverter can adjust the brightness of the screen by using an internal sensor to judge the room brightness, and then adjust the screen accordingly. Failing inverters give off some specific warning signs, which can be recognized by observing different screen characteristics.

Short Intermittent Display Upon turning on the laptop, the screen flashes on in the normal mode for a short period and then blinks to black. A very faint image appears in a dark background, which will be very hard to see almost invisible. After shutting off the laptop and restarting, the same mode occurs, where the screen appears normal for a few seconds then fades to black. This condition points to a failed inverter. To confirm this, plug in an operational external monitor; if the external monitor functions, the inverter has failed. b> Total Blackout with Ghost image b> The laptop turns on, as indicated by the power supply button, but the screen comes up black. The screen comes up black after restart. You might be able to detect a very dim or ghost-like image on the monitor. When you plug in a known functioning external monitor, the external monitor operates normally. This mode of display indicates a failed inverter. b> Long Term Periodic Operation b> With this failure mode, the laptop screen illuminates normally upon start-up and remains that way after several minutes, hours or even days, until it goes very dark again. Brightness controls or restoration attempts do not work. Most often, the screen will function normally with a computer restart, but will eventually return to black. Faint ghost images might appear, as seen in the total blackout mode. b> Dark With Color Variation b> Upon computer start-up, the monitor shows black or dark gray, accompanied by very faint images. The screen might have an intermittent color change, or remain on with a non-standard color variation, like pink or red. b> Auto Control Switch b> If the screen appears black, with no faint or ghost images, look for the lid switch near the back hinge. The switch, when depressed with a closed lid, shuts off the computer and monitor functions. Sometimes the switch becomes stuck in the closed position, disallowing the computer and monitor to turn on when opened. Pushing the switch manually several times can often free it up. If the switch tab has broken or jammed inside the case, it needs replacing. b> Loose Connection In this mode, the display looks normal upon start-up, but tapping the side case of the computer turns the screen black. More tapping results in the screen functioning normally then cutting out again. This condition points to a loose wire connection from the inverter to the LCD backlight lamp, or the video cable. The connectors can be accessed by removing the monitor bezel screws and pulling the plastic retainer off. Both connectors can be cleaned and refitted.

Feb 10, 2013 | Lenovo G550 PC Notebook

1 Answer

Blotted screen in my hp laptop


1.Locate the problem pixel. Display a true black image on your HP's monitor. You can do this by playing a DVD on your HP laptop, and pausing it on the black screen just before the movie starts. Once you bring up a black image on screen, the stuck or dead pixel should be visible.
2.Try applying direct pressure to the problematic pixel. After you've located it, turn off your laptop. Place a soft cloth or rag over the pixel to avoid damaging your screen. A soft chamois works well. Using the tip of a pen, apply gentle pressure to the pixel. You don't need to press hard, as too much pressure can crack or scratch your screen. While applying pressure, boot up your laptop. This should force the pixel to begin working properly.
3.Tap the pixel. With your Toshiba booted up and an image on the screen, gently tap the pixel with the rounded end of a pen cap. Tap hard just hard enough to see a small white flash on the screen. Tap your HP's screen until the pixel begins working properly.
4.Download a stuck pixel program. Several programs, including JScreenFix, UDPix and Pixel Protector, are available for download and can help fix a malfunctioning pixel. These programs display rapidly changing colors and images on your screen. The flashing colors and images can force the pixel to begin functioning properly.
5.Contact HP. If none of the above methods work, your screen may have a pixel that is truly dead. If that's the case, the only option is to replace the display completely. Contact HP customer support at www.hp.com to find an authorized repair service near you.

Sep 19, 2011 | Computers & Internet

2 Answers

My LG TV has suddenly become darker all across the bottom of the screen (10cm strip) it still has colour but is darker. In left hand corner it is considerably darker and depending on what you are watching...


Hi; your TV has burn screen or traces.it comes from one image left on the screen for too long, it can get burned into the screen, making it visible at all times. You can actually eliminate most screen burns with the use of a PC computer and a black and white screen saver. This trick eliminates screen burn after a period of several minutes because the black and white screens flash quickly, removing all traces of color from the screen. This will eventually eliminate any burned images on the LCD screen. you can do it by creating a DVD picture slide with only black and white image. you can use a computer to make DVD picture slide first go to paint brush and draw only white then save as white.jpg. second burn it into nero or other dvd burner third play it to your DVD player connected to you LCD TV.it has to be played in full screen let the white image display on your HDTV for several hours or even overnight. It should remove any burned-in images or ghosts. hope this help...............
thanks....

Sep 13, 2011 | LG 32LD350 32 in. LCD TV

1 Answer

Pink color should be blue also flashing screen


If you hear the hard drive spinning and you think Windows is working but you can't see an image then :-
You could have a defective screen - a defective inverter or a CCFL lamp or simply the video cable needs reseating. After reseating the video cable and the problem is still there then :-
To determine if you have a LCD screen or video card problem, read this and follow the instructions.

Defective CCFL backlight, it may have the following symptom:

  • Screen flashs on red/pink and off.
  • Picture stays on in red and slowly be come normal.
  • Picture flickering with dim display or appear black.
  • Picture flickering on and off.
All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replacing the CCFL lamp

Connect an external monitor to your laptop and power it up, if you see the normal Windows images then the video card and laptop is OK and the problem is definitely the backlight.

Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
Check out www.lcdparts.net for parts, repair service and DIY info.

May 22, 2009 | Acer Aspire One PC Notebook

1 Answer

Lcd shows black in picture taking mode


This sounds like it might be a defective CCD imager. If so, Canon should fix this for you for free, including free shipping both ways. This is regardless of your camera's warranty status. Please check the following two links for more info:

http://camerarepair.blogspot.com/2007/11/canon-digital-cameras-showing-black.html

http://www.usa.canon.com/consumer/controller?act=PgComSmModDisplayAct&fcategoryid=225&modelid=13390&keycode=2112&id=29819

Applicable cameras include:
A40, A60, A70, A75, A80, A85, A95, A300, A310, S1 IS, S60, S200, S230, S330, S400, S410, S500, SD100, SD110, IXUS V2/300/400/430/500, IXY Digital 200a/300a/400/450/500

May 06, 2009 | Canon PowerShot A70 Digital Camera

1 Answer

Canon mp630 scanner


You can save the scanned data on a USB memory or a memory card by using the control panel.


IMPORTANT


- You can not use USB memory card and memory card simultaneously.


1 .Select Scan (Scan) on page HOME (HOME) and then press the OK button.

The screen where you select where the data should be saved is displayed.

2 .Turn the USB memory card direct print port or memory card into the slot.

3 .Select USB flash drive (USB flash drive) or memory card (Memory card) and then press the OK button.

4 .Select Save on USB disk (Save to USB flash). The screenshot Scan documents (Scan document) is displayed.

5. State the necessary settings and then press the OK button.

6. Place the original on the glass plate as shown on the LCD screen.

7. Press the [color] (Color) for scanning in color, or button [Black] (Black) for scanning in black and white.

When the preview is enabled, press the OK button after viewing the preview pane on the LCD screen.

The machine starts scanning and the scanned data is stored either on the USB memory card. Remove the original from the glass plate, the scan is complete.


REFERENCE

- You can only scan images continuously when you select PDF. Continue to scan the confirmation screen. You can save up to 100 pages of images in a PDF file.

- If the USB memory card or memory card becomes full while images are scanned, saved only images that are already scanned.

- You can save up to 2000 files of scanned data in both JPEG and PDF formats.

- Folder and filename of the scanned data stored on USB memory or memory card is as follows:


• Folder Name: (extensions: PDF): CANON_SC \ DOCUMENT \ 0001

• Folder Name: (File Extension: JPG): CANON_SC \ IMAGE \ 0001

• Filename: Serial number, starting from "SCN_0001"

• File dates: 01/01/2008

Mar 28, 2009 | Canon Office Equipment & Supplies

1 Answer

Black screen monitor


souns like the dc-dc convertor board that supplies the backlight gone faulty possible poor soldering on board

Oct 07, 2008 | Mag Innovision LT782S 17" Flat Panel LCD...

1 Answer

Big vertical tinted stripe on screen


Need more information:
Can you isolate which color is causing the banding?
Is there something ON the lense itself?
Is the projection mirror broken or bent?

S

Dec 12, 2007 | Sony Grand WEGA KDP-57XBR2 57" Rear...

1 Answer

Screen went dark


Sounds like the screen control which is usually mounted in your high voltage transformer (Flyback) has opened up. Stargazer

Jan 10, 2007 | Sony KV-27S20 27" TV

Not finding what you are looking for?
Computers & Internet Logo

152 people viewed this question

Ask a Question

Usually answered in minutes!

Top ViewSonic Computers & Internet Experts

Les Dickinson
Les Dickinson

Level 3 Expert

18389 Answers

Cindy Wells

Level 3 Expert

5060 Answers

mukhtar21 shaikh
mukhtar21 shaikh

Level 3 Expert

2017 Answers

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

Answer questions

Manuals & User Guides

Loading...