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It may sound strange but be absolutely sure the cable is plugged into the monitor. Adapter on the computer.
The serial adapter on the back looks just like video.
Video actually has a faintly noticeable monitor icon rigtht next to it.
Plugging into a serial can eventually blow out your monitor.
Also, a.badcable can do the same thing.
And if you have messed up the monitor's settings you will see the same
Red (foil wrapped with 1 bare ground wire) Green (foil wrapped with 1 bare ground wire) Blue (foil wrapped with 1 bare ground wire) Transparent (foil wrapped with 1 bare ground wire)All the above go to the corresponding Gun Color, the Bare wire goes the one GND pin. Purple Yellow Black Orange White Bare braided outer ground wire. Combine ALL earths to a single point. You will have to open up the unit, to see what colors are used for the 5 - DDC Return10 - GND-Sync/Self raster12 - DDC Data 13 - H-Sync 14 - V-Sync 15 - DDC Clock Settings they are marked on the motherboard.
Generally, this is caused by the loss of one of the main color inputs (Red Green Blue). Do the Following:
Check the cable connections at both the monitor and the computer. Look inside the connector for any bent bent pins (there may be some that appear to be missing, generally that is normal) then reset the connections firmly and tighten the retainer screw snug, but not extremely tight.
If that doesn't resolve, try the monitor on a different system and see if the problem follows the monitor. If it does, try a different cable. If the problem doesn't occur on another system, then the video card of the effected system is suspect.
If issue occurs on multiple systems with known good cables, then the monitor will need replacement.
Disconnect the monitor signal cable from PC and switch on your monitor. It should show some logo with Red, Green and Blue colors with a message similar to "No signal". If so, your monitor is working fine. Sometimes if the brightness and contrast is set to zero using controls present in the monitor, it will not show up anything. check wheather somebody set your monitor brightness and contrast to zero. If so incease them. As a last try connect to different PC and check before approaching a service center. I hope this will help you out. :)
The solution: hidden menu within the main menu itself. Hold the Menu button down while pressing Power to power on, and release power button only when the screen comes up, still holding the menu button. The menu will appear and there will now be a hidden selection, "Auto Color", printed in a red-on-black font at the bottom of the menu. Use the +/- buttons to access it, and press Menu. My green/yellow tint went away! Now my picture works great, and the setting lasts through Auto-Adjusts and Resets!
There are a few things that can cause this. The two most frequent:
(a) Has the monitor or computer been moved? The connector may be loose or slightly "off" of the port on the video card.
(b) If that's not the case, does it happen all the time? It's possible that one of the color 'guns' is off or malfunctioning - which means, essentially, a dead monitor. A 15" CRT just isn't worth fixing these days.
The little buttons beneath the monitor, unfortunately, do nothing for color adjustment - just brightness, contrast, and the usual positioning controls.
If your color is messed up on your display also then I think you need a new monitor. Why don't you try using a monitor that you know works and see if you have the same problem. Then let us know the results or the answer so we can have a little more to work with.
Well most monitors come with 2 preset color temperatures and the option to customize it(the rgb setting). Your monitor has them as well 6500K or 9300K. 6500 is more reddish(like outdoors) and 9300 is more a bluish white(like a tv, i like the 9300 more).
How u said its red and bright, what i would do is set the 9300 preset and if its still too red the customize the RGB by lowering the red. and If too bright then Lower the brightness(Press down on BRIGHTNESS CONTRAST page).
If you don't have the manual you can download the full manual from LG's download site here:
If you see that you can't get it just right,then the monitor might need adjustment from inside and you should make a qualified technician open the monitor and adjust that for you.
Hope this was helpful.