I'm glad to see so much activity in this thread by a new group of folks. The 2009 'veterans' aren't around so much.
Originally Posted by wondras
...degaussing has nothing to do with brightness or oxidation. It removes residual magnetic charge to keep the colors from getting distorted.
Originally Posted by Hi Def Fan
Disagree entirely, and I don't mean to sound crass, but it's really more a matter of fact than opinion. If you've ever seen a CRT screen go south from oxidization build-up, you know what I'm talking about.
No offense taken, and not to sound crass, but where does this "fact" come from? The term "Gauss" is a unit of magnetic charge, so to degauss is to remove a magnetic charge.http://en.wikipedia.org/wiki/Degauss...ssing_monitors
It's not as severe on a plasma because there's a metal screen or grille on CRTs that collects the oxidization/magnetization faster, but plasmas WILL darken over time.
The metal screen (shadow mask) is actually the piece that gets magnetized and causes the color distortion. The electrons get redirected by the residual magnetic charge and hit phosphors behind the wrong holes in the mask, producing the wrong colors.
There is something called a "getter" in CRTs to recover electrons, but there's no "collecting" of oxidation; the phosphors are literally burned, and don't come back. The only way to repair them is to physically open the back of the tube and apply a new phosphor coating. This is sometimes done for high-end CRT projection tubes, but otherwise isn't worthwhile.
The only sort of de-oxidation that can be done is to 'rejuvenate' the tube, which involves using a repair device that creates a controlled over-voltage to blast a layer off of the electron gun in the back, which will sometimes brighten it up and extend its life for a short time. This has nothing to do with the phosphors, though.
Of course, all of this has nothing to do with input lag, but sometimes I just can't help it...