Monitor goes black

Hope this helps.... Your monitor has an inverter issue. You know it's an inverter problem when:
1. Your monitor starts normally and displays the startup/desktop screen for a while.
2. Then it suddenly goes off, leaving a blank (black) screen or a very dim display.

To fix this black screen problem, change the inverter board (based on your monitor brand). Source(s): http://lcdmonitorrepair.annics.com

Hi there.

In the Control Panel>Accessibility>Display
If the high contrast box is checked, uncheck it.
When you say in "Add program", where is that exactly? Under Display in the Accessibility window I only see High Contrast Options andCursor Options. Did you maybe change a program in the Control Panels "Add or Remove Programs" section? It's either that

or

your monitor may be entering power saving mode.

This problem could be that your Power Options in the Control Panel have been switched to "switch off the component ever now and then to save power". To change this, do the following:

1) Navigate to the Control Panel by clicking Start and then Control Panel. Then double click on Power Options as shown below circled in red.

2) This will then display the Power Options window as shown below.

3) Once you have opened the Power Option Properties, under Power Schemes select the one that best suits your PC system.

4) Then you can select whether or not to switch off your monitor and/or hard drives after a period of time when it is not being used.

If you have your PC on most of the time then I suggest you select Never as the turn off option for both your hard drive and monitor. If you are using a laptop the turning off the hard drive and screen can however save on battery power when the laptop is not in use.

If your problem persists then it might just be as simple as a loose connection, make sure that your monitor display plug is correctly plugged into your display card or onboard display correctly.

Let me know how it goes.
~Slasher_X

Is this a laptop?
This a common problem for monitors, especially on laptops. This cause by the inverter board. The inverter boosts voltage to light the screen. When goes bad they go bad they often work for a few seconds. If you look closely you can see the screen but the voltage is not there to get brightness.

Bad power supply due to bad DC filter caps, failed backlight inverter board due to failed MOSFET, transformers, lamp assemblies. You need to troubleshoot it.
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.

Basic LCD monitor troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting

http://en.wikipedia.org/wiki/Capacitor_plague
Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

Samsung syncmaster 920nw 19 goes black after 2 seconds

Sounds like its going to sllep too soon make sure you do not have it set in your video card settings. also try it on a diffrent computer. if that does not shore it up replace the acpi board

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/edwy_1a56970cf1ea4620

Sounds asif the Xenon tubes that backlight the LCD are losing power. Probable cause, a power invertor or PSU fault.
It can be repaired by a hardware specialist, but best written off.
The cost of repair will be better spent on a new monitor.

Simplest solution may be the screen resolution settings are set higher than the monitor's capabilities. Try lowering the screen resolution and refresh rate in the display properties or try booting to safe mode (press F8 when the Windows splash screen first appears) and see if the LCD will display the windows desktop. It that works, check your video drivers and the screen resolution and refresh rate settings.
If the monitor has the problem in safe mode and/or if lowering the screen resolution and refresh rate don't help then I suspect the a problem similar to one some Dell 17inch LCDs have. On the Dells It is usually caused by a defective voltage regulator transistor in the backlight inverter circuit. Troubleshooting that problem should only be attempted if you have experience at repairing electronic circuitry since it will involve testing individual components and soldering.

HP's are known for bad capacitors in the power supply.
Replacing them is simple if you know how..not so simple if you don't.
Try your local TV repair centre. It should not cost alot to have the capacitors replaced.

Hope it helps =)

The following steps are how to examine what's wrong with your LCD monitors. After you turned it on and the screen went black, you have to check that if you can see the image on the screen or not by shining a flashlight into the screen, not directly but find the best angle to the screen and take a look very closely. If you can see the icons or any image, there will be a minor problem. This is because of the lamps inside screen. Some of them were broken and it is very easy to replace. If you cannot see anything on the screen, there'll be some problems with inverter board. If you have soldering tool and want to fix it by yourself, check the caps first. It may cause this problem. Some caps might show leaking or burn spot on the board because of too high temp. If you don't have soldering tool, you better go get a technician to do so. Hope this help!! If anything I can help you with, feel free to let me know.
Thank you,
Tan