What's the dead pixel frequency for TFT monitors?

[John123]

Hi!

I wonder what the avarage risk of getting a TFT monitor with one or more
dead pixels is. From what I've heard, no manufacturer is willing to exchange
a TFT monitor if only 1-3 or less pixels are dead. This has made me a bit
sceptical to buying one. However, if the risk of getting such a dead pixel
monitor is low, I figure it might be worth taking the risk anyway.

So is it approximately a 1, 5, 10, 25 or 50 percent risk of getting a 17"
monitor with this fault?

 

[dh]

Hi!

I wonder what the avarage risk of getting a TFT monitor with one or more
dead pixels is. From what I've heard, no manufacturer is willing to exchange
a TFT monitor if only 1-3 or less pixels are dead. This has made me a bit
sceptical to buying one. However, if the risk of getting such a dead pixel
monitor is low, I figure it might be worth taking the risk anyway.

So is it approximately a 1, 5, 10, 25 or 50 percent risk of getting a 17"
monitor with this fault?

For me it has been 0 out of 3 monitors, all Samsung.

 

[Daniel Yates]

I have 1 dead pixel on my Samsung 15"TFT and to be honest it was there for 4
months before anyone else noticed it. Unless dead pixels are clustered
together you will not notice them.

Regards

Daniel Yates

 

[dh]

Stuck off maybe but a stuck on one sure is easy to notice.

 

[Bishoop]

| Stuck off maybe but a stuck on one sure is easy to notice.
|
|
|
|
| On Mon, 15 Sep 2003 00:31:48 +0100, "Daniel Yates"
|
| >I have 1 dead pixel on my Samsung 15"TFT and to be honest it was there
for 4
| >months before anyone else noticed it. Unless dead pixels are clustered
| >together you will not notice them.
| >
| >Regards
| >
| >Daniel Yates
| >
| >| >>
| >> >Hi!
| >> >
| >> >I wonder what the avarage risk of getting a TFT monitor with one or
more
| >> >dead pixels is. From what I've heard, no manufacturer is willing to
| >exchange
| >> >a TFT monitor if only 1-3 or less pixels are dead. This has made me a
bit
| >> >sceptical to buying one. However, if the risk of getting such a dead
| >pixel
| >> >monitor is low, I figure it might be worth taking the risk anyway.
| >> >
| >> >So is it approximately a 1, 5, 10, 25 or 50 percent risk of getting a
17"
| >> >monitor with this fault?
| >> >
| >> For me it has been 0 out of 3 monitors, all Samsung.
| >


I have a Samsung 17" with a "stuck on" red subpixel and the only time I see
it is on a black screen.

 

[Dave Hull]

Here is an excellent article on the subject:

http://www.tomshardware.com/display/20030319/index.html

Dave

 

[Daniel Yates]

| Stuck off maybe but a stuck on one sure is easy to notice.
|
|
|
|
| On Mon, 15 Sep 2003 00:31:48 +0100, "Daniel Yates"
|
| >I have 1 dead pixel on my Samsung 15"TFT and to be honest it was there
for 4
| >months before anyone else noticed it. Unless dead pixels are clustered
| >together you will not notice them.
| >
| >Regards
| >
| >Daniel Yates
| >
| >| >>
| >> >Hi!
| >> >
| >> >I wonder what the avarage risk of getting a TFT monitor with one or
more
| >> >dead pixels is. From what I've heard, no manufacturer is willing to
| >exchange
| >> >a TFT monitor if only 1-3 or less pixels are dead. This has made me a
bit
| >> >sceptical to buying one. However, if the risk of getting such a dead
| >pixel
| >> >monitor is low, I figure it might be worth taking the risk anyway.
| >> >
| >> >So is it approximately a 1, 5, 10, 25 or 50 percent risk of getting a
17"
| >> >monitor with this fault?
| >> >
| >> For me it has been 0 out of 3 monitors, all Samsung.
| >


I have a Samsung 17" with a "stuck on" red subpixel and the only time I see
it is on a black screen.

The one dead pixel I have is also red on black backgrounds. With outlook
open it is looking al ittle blue.

Daniel

 

[John123]

For me it has been 0 out of 3 monitors, all Samsung.

Thanks for sharing your personal experiences, however it's much to little to
base a statistical view on. Knowing that one guy has a monitor with one dead
pixel, and another guy has one without any dead pixels don't do much good.

Is there really no statistical info available on this subject. I want to
know what the avarage risk of getting a monitor with one or more dead pixels
are - someone please help!

 

[Daniel Yates]

Thanks for sharing your personal experiences, however it's much to little to
base a statistical view on. Knowing that one guy has a monitor with one dead
pixel, and another guy has one without any dead pixels don't do much good.

Is there really no statistical info available on this subject. I want to
know what the avarage risk of getting a monitor with one or more dead pixels
are - someone please help!

On that basis you will have to take your chances. There are no statistics on
% chances of dead pixels, as it is what you could term a random event for
the most part. There are a couople of companies I have seen in the past that
offer a guarentee that there will be no dead pixels. But all they do is
offer free return and replacement if you do get one - they dont do anything
different on the manufacturing level.

The industry standard is 6 dead pixels or less, that is the best your gonna
get as far as statistics go i'm afraid.

Daniel

 

[Al Dykes]

On that basis you will have to take your chances. There are no statistics on
% chances of dead pixels, as it is what you could term a random event for
the most part. There are a couople of companies I have seen in the past that
offer a guarentee that there will be no dead pixels. But all they do is
offer free return and replacement if you do get one - they dont do anything
different on the manufacturing level.

The industry standard is 6 dead pixels or less, that is the best your gonna
get as far as statistics go i'm afraid.

Daniel

Since it's a crap shoot, deal with a manufacturer, or dealer whose
terms you find acceptable. Look at the warrantee information and see
if they cover dead pixels.

 

[rotor]

Since it's a crap shoot, deal with a manufacturer, or dealer whose
terms you find acceptable. Look at the warrantee information and see
if they cover dead pixels.

Dead Pixels Yea sore point with me,
TFT Monitors are graded From Grade A to Grade D
Grade A is for Military,Hospitals and Police use and there are no
allowable dropped pixels in these monitors for obvious reasons
(Imagine the army seeing a dot on the screen and firing a SAM Missile
at it !!!) Get the drift!!
Grade B is for Joe public and there are I think off the top of my head
Six clustered allowable dropped pixels in these TFTs and soon and so
forth.
I recently bought a TFT from PC World and upon inspection at home I
had a Dropped pixel Right on the area of XP taskbar which normally
nobody would spot but me, being a perfectionist,sussed it straight
away,back in the box it went and back to the store,
The technical Bod at Pc World said NO CAN DO! 'Moaning over one little
pixel' 'Can hardly see it'
Anyway, cut a long story short, I made him go through the whole
warehousefull of monitors until he found one that was 100% and I have
it to this day and its working a treat.
So you see its a case of hit and miss with these things in most places
and by law they neednt change them if they dont want to.
Good news is that Hansol TFTs are the best cost effective buy and my
local Pc shop who deals in them says that they sell their monitors in
100% condition and if you find a dead pixel, Bring it back and we will
change it.
My wishlist is a 17'' silver/grey Hansol TFT Beutiful looking bit if
kit but I aint got the Sheckles at the mo.
Hope this has been useful info for you and if you aint to far away the
shop I use is northantscomputers.com Kettering branch, Smashing bunch
of fellas!!
Eddie. alias Rotor

 

[Gary W. Swearingen]

I had a 15" CTX monitor (CRT type) with a dead pixel. Actually, it
was 1/3 of a pixel; one hole in the shadow max didn't get made. (Do
they punch them or etch them?) It was a couple of inches from the
lower right corner, but I still didn't notice it for a very long time.

One of those Radio Shack hand-held microscopes will focus down through
the thick glass and show the mask holes as huge dots, each clearly
red, green, or blue, and what seem like sharp-edged characters without
magnification are barely recognizable as characters.

It did get me wondering why the holes are layed out the way they are.
Horizontally-scanning electron beams turning on and off, of course,
aren't supposed to strike particular holes, but some analysis with pen
and paper made me think that the projected pixels would fall on the
mask holes in a way that is less different in the vertical and
horizontal directions if the mask hole pattern was rotated 30 degrees.
But mod'ing a monitor is a bit tough.

 

[Jonathan Eales]

Just bought a NEC/Mitsubishi LCD 1760NX 17" monitor. Perfect picture with
no dead or lazy pixels.

Pity that they didn't supply a DVI cable in the box. Now I have to go to
the expense and hassle of finding a good but affordable one.

I previously had a DELL (Sharp?) 15 analogue LCD monitor and that didn't
have a dead or lazy pixel either.

Jonathan