Question:
Dead Pixel?
Hi,
I just noticed today on my N3510 that there's a little red dot on the screen when the background is black. Is that a dead pixel? I don't see the red dot when the background is white. Can someone please tell me what that is? Thanks
Answer:
Re: Dead Pixel?
It's a stuck subpixel (the red one to be specific). So the red component of that pixel is always on. You won't notice it on a white background because the red subpixel will naturally be on (all subpixels RGB are on when white)
Fujitsu's policy won't allow a screen replacement for such a case, unless the store you got it from will do an exchange. Here in the USA only one fujitsu reseller store offers replacements even for one pixel (I got a replacement for a one red stuck and one blue stuck subpixels)
Answer:
Re: Dead Pixel?
This is crap. I've only had it for 4 months. So what you're saying is under Fujitsu's warranty, dead pixels aren't covered? Is this repairable?
Answer:
Re: Dead Pixel?
Wasn't there a video someone made that switched the screen color really fast for a long time hoping for the pixel to unstick itself? Wish someone could try it out on a laptop see if it helps, it's an intriguing concept.
Answer:
Re: Dead Pixel?
that video was made specifically for the PSP, but I think I read somewhere that it worked for just a few on notebooks. Some also reported that the massaging techinique worked ... never tried any of those, and if they work I have no idea why, actually it makes no sense that they work.
urxtream, check fujitsu's warranty terms in australia, it might be different than here in the USA. I tried to find it on their australian site but couldn't. A screen replacement would cost a lot if you are going to pay for it (probably around $600 american).
This is an article that abaxter posted a while back about dead pixels and replacement policies (but this only applies for the USA):
Answer:
Re: Dead Pixel?
Thanks alot qwester. I also tried to find out the warranty policies on lcd screens, but its not on their website. I've already sent them an email but I'll have to wait till next monday before they'll reply me. Does it happen very often? and why does it happen? I've had many laptops before and some of them I've had for 5 years but none of them had dead pixels.
Answer:
Re: Dead Pixel?
have a look at abaxter's article it answers some of your questions :) but generally defective pixels are defective from the start, only in rare ocasions do they appear later on. Like you, I have had many laptops and none actually got more dead pixels than they had on day one, except for one that had a dying screen but that had its screen die in the first few days. But dead pixels, or even stuck ones, are not something uncommon considering how many pixels there are per screen!
Answer:
Re: Dead Pixel?
Well, each pixel is wired to his own transitor (or something?) and if the video keeps flipping the colors, the pixel keeps flipping the polarity of these transitors. If the liquid cristal was dissordered and unresponsive, maybe if you use them a lot them might "burn in" and reorder themselves or something. Its like when you have a magnet that's demagnetized, you put it in an electric current to magnetize it again. That's how it should work, though if it's the transitor that are physically cut, it's cut. I don't know, once i had a stuck pixel APPEAR on my screen, it wasn't there in the first place, but after a while it went away.
What's the massaging technique?
Answer:
Re: Dead Pixel?
"Massaging" the screen means gently rubbing it with your finger- you should use a microfiber cloth to prevent scratching, and make sure to be gentle. This unsticks the pixel many times. I have had dead ones come alive (:-)) by doing that. Personally, since I am compulsive, I like to slightly dampen the cloth first and clean the area of the screen, just in case there is any dirt on the screen so I don't inadvertently scratch it while massaging.
I have not used the programs, but have been told by Portableone that on some laptops it has actually caused screen damage, changing the color display, so if you intend to use it, I wouldn't for the 4-5 hours or so they recommend doing so.
Answer:
Re: Dead Pixel?
Check out "Dead Pixel Buddy" - a freeware program for identifying dead pixels.
http://www.laptopshowcase.co.uk/downloads.php?id=1