Problem with Pixel Error - Revision history

Hkazemi: /* Solutions */ PixChanger links updated

2008-08-08T00:43:36Z

‎Solutions: PixChanger links updated

Hmh: /* External sources */ Update external link

2007-08-07T00:02:31Z

‎External sources: Update external link

Atesti at 10:07, 2 August 2006

2006-08-02T10:07:12Z

Atesti at 10:06, 2 August 2006

2006-08-02T10:06:39Z

RichardNeill at 20:58, 29 July 2006

2006-07-29T20:58:45Z

RichardNeill: /* Try bending it */

2006-07-29T20:57:29Z

‎Try bending it

144.136.91.219: /* Don't panic! */

2005-10-21T08:21:33Z

‎Don't panic!

192.160.6.253: /* The ISO 13406-2 norm */ typo

2005-09-27T14:51:21Z

‎The ISO 13406-2 norm: typo

Wyrfel: /* Solutions */

2005-08-25T18:24:03Z

‎Solutions

AlBundy: /* Don't panic!-- lcdtest link */

2005-08-25T18:11:11Z

‎Don't panic!-- lcdtest link

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 Besides some april jokes there isn't really any solution except looking for a replacement.
-However, for {{Windows}} an interesting program exists that can help you making annoying subpixels and pixels more bearable. It works by trying to compensate a dead subpixel by adjusting the values for the remaining working subpixels. This way you can i.e. get rid of a most annoying always lit red subpixel. The program is german only and a download link can be found in its german [http://www.prad.de/board/thread.php?threadid=11797 PixChanger discussion].
+However, for {{Windows}} an interesting program exists that can help you making annoying subpixels and pixels more bearable. It works by trying to compensate a dead subpixel by adjusting the values for the remaining working subpixels. This way you can i.e. get rid of a most annoying always lit red subpixel.  It is called PixChanger and was written by Daniel Goebel and Denny Koberling.  Although it is only available in German, it works fine on English versions of Windows XP and is relatively easy for English speakers to figure out:
 If you have a '''line''' of dead (bright or dark) pixels, this is usually caused by a failure of one of the address-lines where it contacts the edge of the panel. You can sometimes restore it by (''carefully''!!) flexing the display. Find the point on the bezel where the line ends, then push it gently with a thumb (or from behind) while supporting the outer edges of the display with 2 fingers. The LCD needs to be

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 ==External sources==
 * [http://www-307.ibm.com/pc/support/site.wss/document.do?lndocid=MIGR-4U9P53 IBMs page on defective pixel display replacement criteria]
-* [http://graphics.tomshardware.com/display/20030319/index.html "An autopsy of Dead Pixels" at Tom's Hardware Guide]
+* [http://www.tomshardware.com/2003/03/19/penalty/ "Penalty: An autopsy of Dead LCD Pixels" at Tom's Hardware Guide]

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 * Be concious about how hard it was to find the dead pixel - if it was really hard it can't be too bothering.
 * Also make sure that what you consider a dead pixel isn't just a piece of dirt or dust.
-* Try pressing the (blue) scroll button on the UltraNav. There is a bug in the UltraNav driver which causes fake Bright pixels to appear on the screen. See [[UltraNav]] for more information
+* Try pressing the (blue) scroll button on the UltraNav. There is a bug in the UltraNav driver which causes fake Bright pixels to appear on the screen, especially if FireFox is used as browser. See [[UltraNav]] for more information
 ==Solutions==

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 * Be concious about how hard it was to find the dead pixel - if it was really hard it can't be too bothering.
 * Also make sure that what you consider a dead pixel isn't just a piece of dirt or dust.
-* Try pressing the (blue) scroll button on the UltraNav. There is a bug in the UltraNav driver which causes fake Bright pixels to appear on the screen.
+* Try pressing the (blue) scroll button on the UltraNav. There is a bug in the UltraNav driver which causes fake Bright pixels to appear on the screen. See [[UltraNav]] for more information
 ==Solutions==

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 ==Causes for dead pixels/subpixels==
-* As stated above, dead pixels are an inherent feature of the technology/production process of TFT displays. How many of them are in the final displays sold is just a mater of quality control standards.
+* As stated above, dead pixels are an inherent feature of the technology/production process of TFT displays. How many of them are in the final displays sold is just a matter of quality control standards.
 * Furthermore, they can also accur at random time after production. Transistors can have faults that are not recognizable at production time. These faults may make the transistor stop working after it has been in use for a certain amount of time.
 * Mechanical or environmental stress (i.e. heat) can possibly damage a transistor, leading to pixel errors.
 ==Don't panic!==

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 ==The ISO 13406-2 norm==
-However, to give the concerned customer more transparency when bying LCD displays, the ISO norm 13406-2 was introduced, providing a basis for warranty claims. By assuring one of the classes of this specification, the producer is bound to keep that quality standard throughout the whole production series. However, Manufacturers are not necessarily going with this standard. For values for IBM displays look at [http://www-307.ibm.com/pc/support/site.wss/document.do?lndocid=MIGR-4U9P53 this page].
+However, to give the concerned customer more transparency when buying LCD displays, the ISO norm 13406-2 was introduced, providing a basis for warranty claims. By assuring one of the classes of this specification, the producer is bound to keep that quality standard throughout the whole production series. However, Manufacturers are not necessarily going with this standard. For values for IBM displays look at [http://www-307.ibm.com/pc/support/site.wss/document.do?lndocid=MIGR-4U9P53 this page].
 The values in the following table state the acceptable errors per 1 million pixels. Dead pixels form a cluster when they are within a square of 5x5 pixels.
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 | IV || 50 || 150 || 500 || 5 || 50
 |}
 ==Causes for dead pixels/subpixels==