06-09-2005, 10:00 AM
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Developer & Designer, News Editor Emeritus
Join Date: Aug 2006
Posts: 12,959
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Find Dead Pixels with Mobile Screen Tester 1.0
Mobile Screen Tester is a free dead pixel tester compatible with QVGA and VGA devices running Pocket PC 2002 right up to Windows Mobile 5.0 (the .NET Compact Framework is required for devices which don't already have it onboard). If you've ever had a case of dead pixel paranoia, then this application may be worth checking out. Off topic - I just found one on my laptop yesterday and it's been driving me nuts! Oh well, I still have another 2,303,999 pixels to keep me happy. Wheeee! 
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06-09-2005, 08:20 PM
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5000+ Posts? I Should OWN This Site!
Join Date: Aug 2006
Posts: 5,616
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So what does a dead pixel look like? Black? Grey? White?
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06-09-2005, 11:41 PM
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Sage
Join Date: Mar 2005
Posts: 800
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Quote:
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Originally Posted by ctmagnus
So what does a dead pixel look like? Black? Grey? White?
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That's my question too... :?:
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06-10-2005, 03:08 AM
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Ponderer
Join Date: Oct 2002
Posts: 113
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Becoming a PDA hypochondriac
So if you need a tester to discover if you have a dead pixel, which you would not have noticed before... why discover the un-obvious?
If you already notice dead pixels, then why bother to test it?
In short, I am not sure I get the need for this.
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"This is nothing like anything we have yet to experience." - Bob & Ray
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06-10-2005, 03:15 AM
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Sage
Join Date: Mar 2005
Posts: 800
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Re: Becoming a PDA hypochondriac
Quote:
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Originally Posted by azhiker
So if you need a tester to discover if you have a dead pixel, which you would not have noticed before... why discover the un-obvious?
If you already notice dead pixels, then why bother to test it?
In short, I am not sure I get the need for this.
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Well, it's just a "fun" utility. :lol:
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06-10-2005, 03:27 AM
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Developer & Designer, News Editor Emeritus
Join Date: Aug 2006
Posts: 12,959
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Quote:
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Originally Posted by ctmagnus
So what does a dead pixel look like? Black? Grey? White?
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Black...ish.
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06-11-2005, 06:11 AM
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Intellectual
Join Date: Mar 2004
Posts: 126
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Quote:
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Originally Posted by ctmagnus
So what does a dead pixel look like? Black? Grey? White?
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The actual color of the dead pixel depends on which element has gone bad. It could be black or white. There may be a third color but I'm not certain.
Knowing how anal I can be about things, I don't want to find out if there is a dead pixel in my display. I haven't seen one yet, and I want to leave it at that... if I find one, it's gonna nag me to the point that I might go and buy one of the new VGA models to the detriment of my wallet.... but then again... that might not be so bad... it's probably a faster route to a new PPC than waiting for my 2215 to become obsolete :devilboy:
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06-11-2005, 06:45 AM
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Developer & Designer, News Editor Emeritus
Join Date: Aug 2006
Posts: 12,959
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Quote:
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Originally Posted by socrates63
Quote:
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Originally Posted by ctmagnus
So what does a dead pixel look like? Black? Grey? White?
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The actual color of the dead pixel depends on which element has gone bad. It could be black or white. There may be a third color but I'm not certain. |
The colour largely depends on the subpixel that has malfunctioned. Since each pixel is composed of a red, green and blue subpixel, if one goes, then the colour burnt on the screen is composed of the other two. In most cases however, the dead pixel results from a failure of the transistor which directs light through the subpixels. In that case, black appears to be the dominant colour.
IIRC, a lot of people have been complaining about dead pixels on their PSP. Apparently a few of the batches that shipped to the US suffer from it bad. :|
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06-12-2005, 10:41 AM
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Thinker
Join Date: Dec 2004
Posts: 315
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errr, the liquid..in lcd..does not direct light.. it blocks it. ^^
A malfunctioning pixle thats black is very rare, incredably rare, infact if you have a black pixle.. I would blame the video card. 
A "dead" pixle is actually a sort of misnomer, what is usualy fried is one of the millions of transistors that make up your lcd (tft, thin film transister, in each corner of a "color cell" is a transistor) and thus one color cell, or sub-pixle, dosn't operate. On rare occurances it may be active but stuck at a certain voltage (so instead of bright red, it might be dark red), but most of the time it outputs no power and the color cell never becomes "dark", thus an allways on mode. The other color cells that make up the single pixle usualy work fine though, so it only really becomes noticable when you have an all black image. Because the color cell is dead and never blocks light, a pixle that should be black (all 3 colors blocked) is now a shade of the color cell thats dead (so if red is dead, red light will be allowed to pass).
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06-15-2005, 09:45 AM
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Pupil
Join Date: Mar 2003
Posts: 10
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RE: Dead Pixels and "Stuck Pixels"
I used an application like this on an LCD TV and I had some stuck pixels that were fixed as a result. I also had a friend that had a Sony PSP that had some "dead pixels" also. He ran a utility for a couple of hours and fixed 6 out of 9 dead pixels on his PSP. Basically the app flashes red, green, blue screens.
It works I can attest. Depends on whether pixels are "stuck" versus atually dead.
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Linear Mode
