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LCD Color Corrector?
colorContrast asks: " I've currently got a Viewsonic VG700b, and as of recent, it has been giving me some trouble. Instead of showing real black, i'm now getting a red hue for black, and the pixels on the screen have become more pronounced than they used to be. The odd thing is that when I brought my monitor home over vacation, the problem was fixed for a short while, but now it appears to be broken again. Does anyone have any suggestions on if its time to get a new LCD, or if they know of a fix for this problem? (I have attempted to manually correct it by changing the colors but that did little.)"
It is nearly impossible to have uniform backlight illumination, so you will always have colour variation problem. And the pixel intensity response is not gammaifiable like CRTs, and is bound to vary along the screen.
If you expect your LCD to do photo-edition, you're SOL.
It could also be your VGA card. I have seen VGA boards go bad in such manners that the make darkened streaks across the screen, off color to complete wrong or missing colors and artifacting/flickering picture. Monitors sometimes go bad in the exact same way! I've been fooled into thinking a display was bad before.
Also, this is a very slight possibility, but your VGA cable might be bad. If the cable is crimpled or damaged, there may be cross talk among the signal wires. This usually leads to a ghosted image, but may cause color problems.
So, I'd check your display out on a different PC, with a new cable just to rule out those issues before buying a costly replacement. The case is probably going to be that your display is just bad. Viewsonic isn't a great name in monitors, but then again no one makes a good display anymore.
As a long shot, but Windows and Mac OS X support color profiles. You might be able to compensate with software depending on your video card. I'm pretty sure X.org has some sort of color profile support, though I may be wrong on that point.
Cthulhu Saves.
And then jiggle the cable on the back. And make sure its firmly connected.
Occam's razor is the blind faith in the natural selection of least resistance and in universal oversimplification. -- EF
I'm going to go with the Cable issue theory. I have seen similar issues come from a crimped cable and they're not that expensive to replace. And on that note, mark up on cables is freaking insane. I put in a few years of retail sales (CompUSA) and I assure you, cost on that $60 belkin cable is under $15. Do yourself a favor and buy a cheap-o cable or a rebranded store version.
-Rick
"Most people in the U.S. wouldn't know they live in a tyrannical state if it walked up and grabbed their junk." - MyFirs
That's the symptom to focus on.
Unfortunately, no externally-applied color correction can make your blacks blacker. Possibly gray instead of red, but you would lose serious amounts of contrast.
Loose/broken internal/external cable/connector. Very common problem for all electronics, but usually on monitors it shows up as a problem with white tints rather than black. A broken signal would usually tend towards zero volts (darker).
I would think it's probably not a backlight issue either because, again, you are complaining about black rather than white.
Does your monitor have DVI and VGA inputs? Have you tried the other one?
Does it have an on-screen display mode? Is that mode equally affected by the distortion?
Have hope, it might be possible to repair without surface-mount component-level repair.
Since nobody else is being useful at all, i'll top post this one. You need a backlight replacement. It's tining the screen red.
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