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the monitor may be losing the back lite. take a flash light or bright light and shine it at the screen after it goes black. can you see a faint picture? if so the back lite has failed. usually the cost of replacement exceeds the cost of a new monitor but there are a couple of web sites that detail the replacement of the "ccfl" cold cathode flouresecent light.
this is a common problem with the capacitor, try opening your monitor and see if there is a capacitor swalow like gonna blow... the capacitor has a form like a AA battery... if changing the capacitor the problem persist maybe is a problem with the board and you need to search if the board have continous power....
The problem on your monitor is a bad power supply. We you can solder you should be able to repair it. If you check our site at : www.ccl-la.com/badcaps.htm We have a monitor repair section with dis-assembly guides and repair procedures. I will post a Hanns-g guide tonight. This will show how to open and repair the monitor. We also have a repair parts kit available. If you don't want to do the repair yourself then we can do it for you, just email me if you have questions or wan tus to do the repair for ou.
I hope this helps. Buddy Corporate Computer www.ccl-la.com
Hi, First, verify the monitor is functional. Monitor STFC (Self Test Feature Check) Turn off the monitor Plug the monitor power cord directly into the wall socket to remove any surge protectors or APCs from the troubleshooting equation Unplug the monitor video cable from the back of the computer Turn on the monitor The floating dialog box should appear on screen against a black background. If the issue appears during the STFC, the monitor is defective. What are the results please?
My monitor does the same thing at times and sometimes shows "No Signal" and at other times the screen will maintain the images but the backgound color switches to mustard yellow. In each of these cases I have been able to solve the problem by unplugging the power cord from the electical outlet for about three seconds and plugging it back in. I have a KDS model 780 LCD.
Have you checked your video card or adapter?
Check the settings on the monitor itself.
If you didn't find the problem go into system properties (windows logo + pause)/hardware/device manager. Expand monitor/right click and see if your new monitor is listed. Is there a yellow or red symbol next to it? This would mean a problem, then right click symbol/properties and error will be shown.
Could be a memory issue.
Don't forget to try a "working monitor". This will narrow it down a bit.
First make sure you have the monitor cables correct. Try another monitor hopefully works so you can go into your device manager and make sure the right drivers are loaded and that your monitor is listed. You may do some research because I'm not sure but I think your monitor uses a back light & an inverter which is replaceable and not usually a difficult job or to expensive. Labor of coarse cost more than the parts. Monitors use a video card or on board video so make sure these are not the problem.
Are you sure its not in wake mode in the bios?
If you shine a light on the monitor when the comp. is on and the monitor light is on you may be able to see your screen. That would be the back light.
When if all and what was going on when it stopped working?