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Thread: What's the dead pixel frequency for TFT monitors?

  1. #1
    Ext User(John123) Guest

    What's the dead pixel frequency for TFT monitors?

    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?



  2. #2
    Ext User(dh) Guest

    Re: What's the dead pixel frequency for TFT monitors?

    On Sun, 14 Sep 2003 21:54:17 GMT, "John123" <a@b.c> wrote:

    >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.

  3. #3
    Ext User(Daniel Yates) Guest

    Re: What's the dead pixel frequency for TFT monitors?

    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" <hemm99@hotmail.com> wrote in message
    news:jet9mv0710ll58aua7g5a34cvtnn1u825g@4ax.com...
    > On Sun, 14 Sep 2003 21:54:17 GMT, "John123" <a@b.c> wrote:
    >
    > >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.




  4. #4
    Ext User(dh) Guest

    Re: What's the dead pixel frequency for TFT monitors?

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




    On Mon, 15 Sep 2003 00:31:48 +0100, "Daniel Yates"
    <d.yates263@ntlworld.com> wrote:

    >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" <hemm99@hotmail.com> wrote in message
    >news:jet9mv0710ll58aua7g5a34cvtnn1u825g@4ax.com.. .
    >> On Sun, 14 Sep 2003 21:54:17 GMT, "John123" <a@b.c> wrote:
    >>
    >> >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.

    >



  5. #5
    Ext User(Bishoop) Guest

    Re: What's the dead pixel frequency for TFT monitors?


    "dh" <hemm99@hotmail.com> wrote in message
    news:g86amv04q4en8lmqc49sqk9sfmk6nh0ers@4ax.com...
    | Stuck off maybe but a stuck on one sure is easy to notice.
    |
    |
    |
    |
    | On Mon, 15 Sep 2003 00:31:48 +0100, "Daniel Yates"
    | <d.yates263@ntlworld.com> wrote:
    |
    | >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" <hemm99@hotmail.com> wrote in message
    | >news:jet9mv0710ll58aua7g5a34cvtnn1u825g@4ax.com.. .
    | >> On Sun, 14 Sep 2003 21:54:17 GMT, "John123" <a@b.c> wrote:
    | >>
    | >> >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.



  6. #6
    Ext User(Dave Hull) Guest

    Re: What's the dead pixel frequency for TFT monitors?

    Here is an excellent article on the subject:

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

    Dave



  7. #7
    Ext User(Daniel Yates) Guest

    Re: What's the dead pixel frequency for TFT monitors?


    "Bishoop" <none@none.net> wrote in message
    news:3_ecnfCDlfyKvviiXTWJhg@giganews.com...
    >
    > "dh" <hemm99@hotmail.com> wrote in message
    > news:g86amv04q4en8lmqc49sqk9sfmk6nh0ers@4ax.com...
    > | Stuck off maybe but a stuck on one sure is easy to notice.
    > |
    > |
    > |
    > |
    > | On Mon, 15 Sep 2003 00:31:48 +0100, "Daniel Yates"
    > | <d.yates263@ntlworld.com> wrote:
    > |
    > | >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" <hemm99@hotmail.com> wrote in message
    > | >news:jet9mv0710ll58aua7g5a34cvtnn1u825g@4ax.com.. .
    > | >> On Sun, 14 Sep 2003 21:54:17 GMT, "John123" <a@b.c> wrote:
    > | >>
    > | >> >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



  8. #8
    Ext User(John123) Guest

    Re: What's the dead pixel frequency for TFT monitors?

    > On Sun, 14 Sep 2003 21:54:17 GMT, "John123" <a@b.c> wrote:
    >
    > >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.


    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!




  9. #9
    Ext User(Daniel Yates) Guest

    Re: What's the dead pixel frequency for TFT monitors?


    "John123" <a@b.c> wrote in message
    news:7f59147b2f8396b7ef2e798facc77e11@news.bubbane ws.com...
    > > On Sun, 14 Sep 2003 21:54:17 GMT, "John123" <a@b.c> wrote:
    > >
    > > >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.

    >
    > 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



  10. #10
    Ext User(Al Dykes) Guest

    Re: What's the dead pixel frequency for TFT monitors?

    In article <byn9b.420$I9.110@newsfep4-winn.server.ntli.net>,
    Daniel Yates <d.yates263@ntlworld.com> wrote:
    >
    >"John123" <a@b.c> wrote in message
    >news:7f59147b2f8396b7ef2e798facc77e11@news.bubban ews.com...
    >> > On Sun, 14 Sep 2003 21:54:17 GMT, "John123" <a@b.c> wrote:
    >> >
    >> > >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.

    >>
    >> 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
    >
    >


    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.

    --
    Al Dykes
    -----------
    adykes@panix.com


  11. #11
    Ext User(rotor) Guest

    Re: What's the dead pixel frequency for TFT monitors?

    On 15 Sep 2003 22:50:01 -0400, adykes@panix.com (Al Dykes) wrote:

    >In article <byn9b.420$I9.110@newsfep4-winn.server.ntli.net>,
    >Daniel Yates <d.yates263@ntlworld.com> wrote:
    >>
    >>"John123" <a@b.c> wrote in message
    >>news:7f59147b2f8396b7ef2e798facc77e11@news.bubba news.com...
    >>> > On Sun, 14 Sep 2003 21:54:17 GMT, "John123" <a@b.c> wrote:
    >>> >
    >>> > >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.
    >>>
    >>> 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
    >>
    >>

    >
    >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.
    >
    >--
    >Al Dykes
    >-----------
    >adykes@panix.com
    >

    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


  12. #12
    Ext User(Gary W. Swearingen) Guest

    Re: What's the dead pixel frequency for TFT monitors?

    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.

  13. #13
    Ext User(Jonathan Eales) Guest

    Re: What's the dead pixel frequency for TFT monitors?

    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



    "rotor" <rotor@free.net> wrote in message
    news:3f78d44b.14042953@news.freeserve.com...
    > On 15 Sep 2003 22:50:01 -0400, adykes@panix.com (Al Dykes) wrote:
    >
    > >In article <byn9b.420$I9.110@newsfep4-winn.server.ntli.net>,
    > >Daniel Yates <d.yates263@ntlworld.com> wrote:
    > >>
    > >>"John123" <a@b.c> wrote in message
    > >>news:7f59147b2f8396b7ef2e798facc77e11@news.bubba news.com...
    > >>> > On Sun, 14 Sep 2003 21:54:17 GMT, "John123" <a@b.c> wrote:
    > >>> >
    > >>> > >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.
    > >>>
    > >>> 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
    > >>
    > >>

    > >
    > >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.
    > >
    > >--
    > >Al Dykes
    > >-----------
    > >adykes@panix.com
    > >

    > 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
    >




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