I bought a 19" Hyundai L90D+, which came with one dead pixel near edge,
not a problem, but should I be prepared for more to crop up?
Thanks
not a problem, but should I be prepared for more to crop up?
Thanks
Dead Pixels - do more occur/appear over time?
- Thread starter Megaherz44
- Start date
Fardringle
Diamond Member
- Oct 23, 2000
- 9,200
- 765
- 126
Pixels can fail at any time. I know of one case at the place I work where an LCD was perfect for nearly a year then developed more than two dozen bad pixels within the space of a month.
There are even some cases where 'stuck' pixels start working normally after a while...
There are even some cases where 'stuck' pixels start working normally after a while...
I can only pray this is true, lol
my Samsung showed up with a single locked-on pixel in the dead center of the screen
argh!
yea apparently [ a mate at chandlers ] was telling me the 6 grand lg and samsung PLASMA screens DONT come with a pixle garentee and have dieing pixles...
He told me to stear clear for 2 or 3 years of em until they are forced to warrenty it, because your warrenty right now DOES NOT COVER PIXLES.
He told me to stear clear for 2 or 3 years of em until they are forced to warrenty it, because your warrenty right now DOES NOT COVER PIXLES.
what really sucks nads is that Samsung has a 'Zero Bad Pixel' return policy on all their LCDs.
In Korea. *sigh*.
stateside is like 8 bad pixels, IIRC
In Korea. *sigh*.
stateside is like 8 bad pixels, IIRC
Stateside, Samsung's policy is more than 9 pixels needed for replacement. That means you need 10 or more. Of course, you can try to see if they'll be like Dell and replace for one for a good reputation.
Interestingly enough, Hyundai used to have an awesome policy -- 3 dead pixels max. This was when they were first starting to push their monitors though. A couple months later, they reverted to Samsung's policy. I guess all those monitors piling up got them to change it quick. You can try to see if they'll replace it for one though. I personally think it's a shame that customers are essentially letting companies get away with such crappy policies because of mass marketing. Dead pixel policies vary by country, and America is among the worst, because there's not much incentive (in the way of complaints and refusal to buy) for companies to offer better ones. Samsung is running a zero pixel defect policy in South Korea (where LCD manufacturers #1 and #2, Samsung and LG.Philips, are located; you can imagine that competition is pretty fierce there). I heard recently that Samsung is now also running a zero pixel defect policy in Taiwan as well (where LCD manufacturers #3 and #4, AU Optronics and Chi Mei Optroelectronics, are located). In Australia/New Zealand, most companies go with 3 max if not 0 max. Meanwhile in America, Samsung is still using 9 max allowed, as well as Hyundai.
Samsung's U.S. policy:
http://erms.samsungusa.com/customer/sea...1&AT_ID=5608&PROD_SUB_ID=28&PROD_ID=-1
Hyundai's U.S. policy:
http://www.hyundaiq.com/cus05.asp
Note that while Hyundai says their monitors meet ISO 13406-2 standards, their dead pixel policy is actually worse than what the guidelines specify. The guidelines allow a maximum of 1 bright whole pixel, 1 dark whole pixel, or 3 defective sub-pixels for 15 inch monitors, while allowing a maximum of 2, 2, and 6 for 17 inch and 19 inch monitors. Hyundai however specifies 6 max (7 or more for replacement) bad pixels (without specifying which type) for 15 inch monitors, and 9 max for 17 inch and 19 inch monitors. I think if you get 7 bad pixels, you can still argue with them that despite their warranty, they cannot claim to be ISO 13406-2 compliant if they do not follow its standards. The same goes for Samsung if they claim to be ISO 13406-2 compliant, but I don't know if they do.
To answer your question, though, yes dead pixels can appear over time. Quite a few appear during the first few weeks, though, so that's why it's worth stressing out your LCD monitor early on.
Interestingly enough, Hyundai used to have an awesome policy -- 3 dead pixels max. This was when they were first starting to push their monitors though. A couple months later, they reverted to Samsung's policy. I guess all those monitors piling up got them to change it quick. You can try to see if they'll replace it for one though. I personally think it's a shame that customers are essentially letting companies get away with such crappy policies because of mass marketing. Dead pixel policies vary by country, and America is among the worst, because there's not much incentive (in the way of complaints and refusal to buy) for companies to offer better ones. Samsung is running a zero pixel defect policy in South Korea (where LCD manufacturers #1 and #2, Samsung and LG.Philips, are located; you can imagine that competition is pretty fierce there). I heard recently that Samsung is now also running a zero pixel defect policy in Taiwan as well (where LCD manufacturers #3 and #4, AU Optronics and Chi Mei Optroelectronics, are located). In Australia/New Zealand, most companies go with 3 max if not 0 max. Meanwhile in America, Samsung is still using 9 max allowed, as well as Hyundai.
Samsung's U.S. policy:
http://erms.samsungusa.com/customer/sea...1&AT_ID=5608&PROD_SUB_ID=28&PROD_ID=-1
Hyundai's U.S. policy:
http://www.hyundaiq.com/cus05.asp
Note that while Hyundai says their monitors meet ISO 13406-2 standards, their dead pixel policy is actually worse than what the guidelines specify. The guidelines allow a maximum of 1 bright whole pixel, 1 dark whole pixel, or 3 defective sub-pixels for 15 inch monitors, while allowing a maximum of 2, 2, and 6 for 17 inch and 19 inch monitors. Hyundai however specifies 6 max (7 or more for replacement) bad pixels (without specifying which type) for 15 inch monitors, and 9 max for 17 inch and 19 inch monitors. I think if you get 7 bad pixels, you can still argue with them that despite their warranty, they cannot claim to be ISO 13406-2 compliant if they do not follow its standards. The same goes for Samsung if they claim to be ISO 13406-2 compliant, but I don't know if they do.
To answer your question, though, yes dead pixels can appear over time. Quite a few appear during the first few weeks, though, so that's why it's worth stressing out your LCD monitor early on.
What I meant was to use your LCD heavily in the first few weeks. Stressing it out is just my own personal term for it (kinda like stress-testing a server or something). Basically if you use it a lot, you give it a chance to let problems develop. For all manufactured items, defects appear mostly either at the beginning (through inherent manufacturing defects) or after a long time (through wear and tear), and dead pixels is no exception. Some are inherent in the process (for example, a particle that ends up where a sub-pixel's connection should be, thus ruining the sub-pixel) while others can appear over time (a particle that's just touching a connection and thus over time, gradually degrades it). Using it heavily early on shortens that initial break-in time.
Some places (mostly brick and mortar stores) have a 30-day return policy or something along those lines. For them, it is especially worthwhile to use your LCD monitor a lot at the beginning so that you can catch that window before you have to go under the regular warranty.
Some places (mostly brick and mortar stores) have a 30-day return policy or something along those lines. For them, it is especially worthwhile to use your LCD monitor a lot at the beginning so that you can catch that window before you have to go under the regular warranty.
i think in the UK the trading standards people enforce the policies on to the manufacturers but i cant remember exactly what it is now......something like up to 4 pixels can be dead on a screen size up to 20in, then 6 after that.....i think....i know over here they are far more stringent on it....hence the fact we pay more for the damn things...lol (however a company can have its own zero pixel policy if it wants)
im guessing they send all the ones with more dead pixels to countries that allow more in their policies...lol
im guessing they send all the ones with more dead pixels to countries that allow more in their policies...lol
well actually, i have heard ways that stresses a monitor and it also "restart/fixes" a stuck pixel. the best way is to make a vid that is flasing different colors repeatedly, put that in full screen and put on repeat. All of the pixels are stressed, and any stuck pixels would reset (if lucky)....best to use this way when bought a monitor and you can still return.
yea, that app is similar to the vid i was talking about...again the only thing the vid/app is doing is just stressing your monitor, as you know, lcds do not constantly refresh like the crt, so you would need to have different colors flashing on your monitor for the pixel to stress it self. Just letting the lcd display your desktop would not be stressing it since lcds do not refresh constantly.
EightySix Four
Diamond Member
- Jul 17, 2004
- 5,122
- 52
- 91
I just bought the exact same monitor and it has 2 stuck pixels
Also I cant get the DVI to work on it so I might be sending it back
Also I cant get the DVI to work on it so I might be sending it back
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