This problem is showing when the main PCB of the monitor failed. contact the LG service provider in your area. They will change the full package assembly or PCB. check this link to get the service center info http://www.lgservice.com/
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Laptops often have a function key which switches from laptop only, external monitor only, laptop & external. One of the top number keys, along with the function (fn for short) must be pressed simultaneously to step through these.
Where these keys are at, may differ from laptop to laptop.
Hi, the Power Saving Mode, turns the screen off to conserve energy. On the remote, press Menu, and scan to Power Saving Mode. You can change the amount of time, when the Screen turn-off, the TV shut-off etc. You can set the time to (5 min) to, (never, turn-off). This should help with your problem. Thanks paul7of9
Hi erin mckinle,
That is probably it's, uh, analog power saving mode. When the screen goes black and the power button flashes, make some mouse gestures or hit some keys that would not affect anything (try spacebar). That should bring up the screen. If you think it goes into power saving mode too fast, go to Control Panel --> Power Options, and change the values. Hope this helps.
check leads and make sure computer hasn't turned it off because of power saving settings, or your graphics card hasn't failed then try it on another system and if still a black screen call LG as they exchange units pretty efficiently.
Try changing to a different video resolution setting. Most monitors work well with the resolution set to 1024 X 768. I'm not sure what operating system you're using, but here's an example of how to do it with Windows XP...
Right-click on your desktop...then click Properties -- Settings -- You can try different resolution settings in the settings window.
I have an LG W2261V, and an old Sharp LL-T19D1-H. The PC runs both just fine, and the PSU has plenty of power. Unfortunately the LG handles power save mode very differently, where the LG would not switch on after entering this mode unless reset (unplugged, PC rebooted, etc). Extremely frustrating, as the old Sharp never had any problems exiting its own power save mode. The LG would enter this mode based on the monitor power settings (in whatever power scheme you are using) in the screensaver tab in display properties. I fixed this by selecting "Never" for "the Turn off monitor" property. I guess this is a warning to those who may wish to buy a new LG monitor, but want to use a power scheme to turn off the monitor.