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Potentially fix dead pixels via a software solution System
This isn't really an OS X hint per se, but I think a lot of people here might benefit from it. There is a video posted here that can be used to potentially fix stuck subpixels on LCD displays. It works by rapidly causing the pixels to change state, which apparently can cause them to become unstuck.

It was originally made for the PSP, but seems to work on any LCD. I played it overnight on my Viewsonic LCD with one stuck red subpixel, and lo and behold, it was gone in the morning. Use it at your own risk, however -- there have been reports of it not working at all, or even causing other pixels to become stuck.

[robg adds: I have no idea if this can actually work or not, but thought it was worth passing on, as it seems to have worked for at least one person.]
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Potentially fix dead pixels via a software solution
Authored by: anshkakashi on Sep 19, '05 10:34:32AM

Instant Epilepsy for all...

Definately should be a warning on this like the ones in the front of video games.

Thanks, I think this could be really helpful... yet to see if it'll work though.



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Potentially fix dead pixels via a software solution
Authored by: ibroughton on Sep 19, '05 12:31:42PM

Actually, people with photo sensitive epilepsy are affected by the overall refresh rate rather than what happens on the screen. Anything with a refresh rate between 45 and 75 Hz can trigger a seizure. (Hence I only use LCD/TFT monitors and have a 100Hz TV)

Having suffered from this for the past 17 years and dealt with by numerous consultants, those warnings given out are purely to cover the manufacturers backs, especially in countries where you can sue for anything at the drop of a hat.

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The server is up but the site is down and I don't know which direction you are trying to go



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Potentially fix dead pixels via a software solution
Authored by: dustin5 on Sep 19, '05 11:54:49AM

If you can stand looking at it for more than a few frames, there appears to be a small gray artifact toward the upper left side of the video about a quarter of the way down. I don't know much about lcd's but that seems like it could do more harm than good.



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Potentially fix dead pixels via a software solution
Authored by: poenn on Sep 19, '05 12:02:30PM

Hey, I had the upper left cloud too. So after all I was NOT going crazy... :-)
Well, my 30" luckily has no dead pixels, but I'd die after a few minutes watching this in fullscreen. :-)



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Potentially fix dead pixels via a software solution
Authored by: dirkstoop on Sep 19, '05 02:44:31PM

being incredibly sceptic I tried this in my old iBook and the green stuck pixel is actually reanimated now. so, it worked for me.



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Potentially fix dead pixels via a software solution
Authored by: silicontrip on Sep 19, '05 07:33:09PM

Version 3 of Dead pixel identifier http://www.versiontracker.com/dyn/moreinfo/macosx/21747 performs this task.

I read, however, that the current version (4) is missing the "burn" function which flashes the screen to try an unstick the pixels.
It is to be reintroduced into version 5.

I have version 3 which also supports the burn in feature.



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Potentially fix dead pixels via a software solution
Authored by: mono toto on Sep 19, '05 07:59:02PM

my iBook had carried a few of these defects from birth. I stumbled across this and ran it about a year ago and it fixed them all up. I ran it again just then (for no real reason) and it alerted me to the fact that my screen really needs a good clean, cheers!



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Potentially fix dead pixels via a software solution
Authored by: robarmo on Sep 19, '05 08:20:22PM

Rather than run it full screen and risk causing other pixels to become stuck (as some people reported in the linked forum) I plan to just run it in a small QuickTime window positioned in the immediate area of my stuck pixel.

Rob.



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Potentially fix dead pixels via a software solution
Authored by: leeww on Sep 19, '05 09:03:26PM

I had no luck with the quicktime movie above (which runs at 30 fps), I left it running for a few hours but no luck, I have a tiny green pixel (so I presume it is 'stuck' not dead)

I have generated a small 100fps RGB cycled GIF (a mere 1.6kb) and will give this a try over night, I have just the one pixel that stays green so I plan to use the GIF just on that one pixel, like the poster above says, I presume if this works, having the movie just around the affected pixel will limit the chance of other pixels going 'belly up'

[img]http://img380.imageshack.us/img380/7852/100fpsrgb9nu.gif[/img]

Lee

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Help!



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Potentially fix dead pixels via a software solution
Authored by: karwood on Sep 20, '05 01:17:46AM
Another hint given to me by a friend who works at a local Apple fix-it shop is to massage the dead pixel gently - with a micro-fiber cloth or something else that won't mess up the screen itself.

The 'stuck' pixels are usually caused by mal-formed crystals in the lattice of the LCD, so the rapid-changing image attempts to loosen and wear the crystals a bit to make them perform normally. Massaging the screen can also slip them back into in the grid they live in, which is another common problem.

Sometimes they come back after a time, but using both these tricks has revived the dead pixels on my monitor.

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Potentially fix dead pixels via a software solution
Authored by: Anonymous on Sep 20, '05 12:08:16PM

I was just hunting down the movie to play it overnight on my office PC and I was showing someone else where the stuck red pixel was. I touched the screen about 1/2" away from the pixel, and whaddya know! The darned thing unstuck!

The pressure I applied was soft, but sudden. You know the way a cat taps or a bunny punches? No more force than that. Not that I'm suggesting you fix your monitor by going to your local pet rescue center and adopting a poor orphaned bunnyrabbit (though that is a noble endeavour), I'm just illustrating :-)



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what about histeric pixels?
Authored by: battlegirl on Sep 20, '05 02:48:03PM

i don't have pixels stuck on one color, but i do have pixel histeria when i have black text over white background or any other high contrast in a window, especially towards the middle of the screen. The pixels around the contrast points flicker on and off like crazy so i look like i have a lot of tiny fleas jumping around in my window. Anyone knows if this software do something about this, too? Or would it make it worse?



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what about histeric pixels?
Authored by: zoldar256 on Sep 20, '05 04:32:49PM

Are you using an LCD monitor with a VGA, not DVI, connection?

If so, then the problem is likely a timing issue with the monitor. Depends on the monitor on how to fix this. Some just have an Auto-tune feature. Which I'd suggest using with an image of an alternating black-white pixel grid displayed onscreen.



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Potentially fix dead pixels via a software solution
Authored by: zeba on Dec 16, '05 07:06:35AM

Hi Anonymous!

I also have a Viewsonic Lcd.
My model is a VX912, and I also have just 1 irritating red pixel.

How long did you run this video?
I assume that it's the same thing if I run the mp4 file, or use UDPixel.

Thank You!



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Potentially fix dead pixels via a software solution
Authored by: mjg7 on Jul 26, '06 02:55:36PM
JScreenFix is a Java applet that randomly turns on and off every colour component on the screen at up to 60 times a second.

The applet is extremely effective and less stressfull on screen electronics (and the eyes!) due to non-synchronised pixel activation.

More information here:
http://screenfix.hostyourself.net

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