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You are here: MacNN Forums > Hardware - Troubleshooting and Discussion > Consumer Hardware & Components > Dead Pixel's: LCD or VideoCard or both???

Dead Pixel's: LCD or VideoCard or both???
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rotuts
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Feb 27, 2005, 06:21 PM
 
I Thought Id pass on some recent observations on my part. Id been worrying about dead pixels in new apple large monitors for some time as i have had some unpleasant experience with aple and their first 22" flat panel i got for my father long ago as his eye sight was failing at the time.

I had hoped to get a new 23" some day along with a G5. but apple would never commit to my complete satisfaction.

I discoverd and Samsung makes the very same monitor, infact 1 " larger with the same resolutions ( ie no more Dots/inch) tehe samsung was on sale with a $100 rebate at the local Fry's and they told me I could bring it back in 30 days no questions asked.

after much heming and hawing I got it and love it. no dead pixels etc out of the box.

but low and behold, after a day or two i get two intermittent DP's just below two icons on the dock. no big deal.

but didn't I have these from time to time on the old 22" apple? its what 3 - 4 years old? teh very same place. I hooked it up and you betcha, same place.

so there may be a minor componet to thisproblem that comes from the vidoe card?

this is not to say that there is a larger more frequent problem with displays themselve. but maybe, if you have had the monitor for a long time, and the DP come and go, these do, they maybe are originating with the video card?

just some thoughts

rotut
     
rozwado1
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Feb 27, 2005, 07:56 PM
 
maybe you have dead pixels in your eyes. try visine and post results.
     
rotuts  (op)
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Feb 27, 2005, 08:33 PM
 
you think?
     
mhuie
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Feb 27, 2005, 10:23 PM
 
Theres a problem with the monitor, I'd either take it back to Fry's or warranty it with Samsung, they have a 0 dead pixel policy.
MBP 1.83
     
rotuts  (op)
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Feb 27, 2005, 10:56 PM
 
this is my point of this thead: maybe some minor pixel errors are card generated? what the chance of dead pixcels in the same the vary same place on two monitors?

rotut
     
rozwado1
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Feb 28, 2005, 12:42 AM
 
chances are very slim. do you have access to try out a friend's monitor to see if it has the same problem? maybe you could take it to Fry's and see if they'll let you hookup a couple of monitors to see if it's a repeating problem.

I'm guessing it's got to be the monitors bc if it was an error with the graphics card, you'd be missing a whole line of the screen, not just a couple of pixels.
     
rotuts  (op)
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Feb 28, 2005, 11:40 AM
 
seems too much work to go to frys for the experiment. and the pixels in that area are only two and they come and go.

if a VC must then die for a whole line, then its just and odd thing.

thanks for thinking about it.

rotut
     
tooki
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Feb 28, 2005, 07:12 PM
 
I'd sooner suspect a software problem, though I see no reason that two single pixels could die in the graphics card's frame buffer. (I see no reason that it would necessarily cause a whole line to fail.)

But yeah, I'd suspect software first.

tooki
     
jamil5454
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Feb 28, 2005, 07:36 PM
 
Try hooking it up to another computer.

Also, it may just be a couple specks of dust. This happened to me with my iBook. Apparently, you can just swipe them away with your finger or a cloth.
     
Calli46
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Mar 1, 2005, 08:38 PM
 
Maybe you should give PixelCheck, a freeware, a try. With it, you can check your monitor for any dead pixel (black, white, red, green or blue). Or you could try another LCD monitor.
X0X0X from Calli
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1800 DP/1024MB/180GB
     
   
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