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Dead Pixel Poll

Discussion in 'Projectors, Screens & Video Processors' started by yoskiwoski, Apr 6, 2005.

  1. yoskiwoski

    yoskiwoski
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    How many people have a dead pixel on there projector? I just bought a PJTX10 for £360 and have discovered one, the girl I bought it from says I can have my money back, but was such a good deal with only 24 hours on the bulb, what I'm wondering is whether most projectors end up with one or two.
     
  2. CooperUK

    CooperUK
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    My previous PJ (ae100) had one dead pixel (blue) which you couldn't even find unless you stood with your nose to the screen. I did not find it distracting or ever felt it detracted from my viewing of films.

    My current PJ (ae700) has no dead pixels, but then th technology has moved on in the past two years.
     
  3. KraGorn

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    One dead on a Sharp Z200E DLP from new.
     
  4. lee789

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    I have checked mine and there are probably 20, if I'm looking correctly, putting on a black screen there are a few green dots. As cooper mentions above these can only be seen up close so they don't interfere at all.

    There is no way that these can be seen when moving images are being projected (6ft screen), I've tried focusing on them from a black screen, turning a dvd on, moving back to my seated position and there is no way that this can be seen.

    My projector is 854 x 480 therefore 410,000 pixels, for 20 to be off (0.005%) isn't too bad, I would say. On a projector with a higher resolution the impact of a dead pixel would obviously be less.

    I may be wrong (as I'm new to PJ's) but unless you're looking at a huge screen where pixelation is a problem, a few dead pixels shouldn't pose a problem ?
     
  5. yoskiwoski

    yoskiwoski
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    I can see mine but then i am in small room so to get a big image I have to use the optical zoom turned up all the way.......give it back , keep it, give it back , keep it??????? Maybe one more movie for a test :)
     
  6. KraGorn

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    lee: I had similar very dull 'stuck' blues and one green on a Sanyo Z2 I had, only visible up to a couple o ffeet back from my 92" screen. After sending it back to Owl they said there were no stuck pixels. When I sold it (on here) I described to the buyer how to see them and it transpired that these are not classified as defective pixels, there's another used for them which I can't recall now
     
  7. lee789

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    Thanks Kragorn, That makes sense, I have had a look around on the forum and have seen screenshots of what people describe as dead pixels, and what I am describing is looks no way like that.

    So I probably have no dead pixels then. Just something else.
     
  8. PjPip

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    Any chance of a link to that info?
     
  9. lee789

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  10. Nick_UK

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    None yet on my Benq 6200, in use for just under a year :smashin:
     
  11. Siamese Cat

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    None on my NEC lt75z - which is a DLP projector.
    Do mirrors ever get stuck/malfunction in some way on the DLP chip?
     
  12. yoskiwoski

    yoskiwoski
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    i'm presuming is a dead pixel, is a green dot but can only be seen standing close to screen (or wall in my case)
     
  13. Metalman

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    I have 2 dead pixels on my Screenplay 5700 (DLP). Infocus tell me this is very rare, they have only had 3 machines reported in recent months. My machine is still under guarentee, Infocus are going to replace the defective chip.
     
  14. Techno Freak

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    I have one stuck on BRIGHT BLUE on a Panny PT300. Happened about 3 months in.
     
  15. PjPip

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    Thanks for the link
    It wasn't quite what I was hoping for though, thought there may be another explanation for pixels stuck on a colour other than being dead.
    Strangely, of the several Epson TW10Hs I've had, they've all displayed faults with pixels stuck on green :confused:
     
  16. UrbanT

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    None on my TX100, Z2, Z3 or HS50 :)
     
  17. Kramer

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    "Lazy" pixels IIRC - like me :D
     
  18. Tempest

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    Ummm, methinks there are people here who seriously need a trip to the opticians!!!!!

    20 dead pixels and can not notice them!

    Also a dead pixel you can only see when right up against the screen!

    eh?

    Well, I can only assume my pixels are a order of magnitude brighter than those pixels, and they shine out like a beacon against a dark background.

    Enough for just 1 to ruin a movie as it's standing out so vividly.

    I've stuck a black spot on the screen which covers it up so not too bad, but I really don't get this "can't really see them" comments at all.

    Perhaps someone can explain?
     
  19. FaB*Bo*Peep

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    I have a couple of constant green pixels on my Epson TW10 but they are near the edge of the picture and because 1 is brighter than the other, from a distance only the brightest is noticeable and even then you have to really look for it in a dark scene.
     
  20. yoskiwoski

    yoskiwoski
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    I'm not sure if there are different levels of these 'dead' pixels or perhaps it is a different problem, the one I have is def not bright like the one some one posted a pic of in a thread earlier, I have had and lcd tv that had a bright green pixel in the middle , the one on projector is not very bright but then again i'm only projecting on a wall, maybe would stand out if i project on screen. anyway the main reason I did this post was to see whether generally people thought I should take it back or not!
     
  21. kelaD

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    Yes, I reckon you should take it back. It sounds like it's pretty distracting.

    However, I know from the warranty on my PDA that some manufacturers will only repair or replace after a certain minimum percentage of pixels go dead.

    Interestingly Themescene will replace/repair if only one DLP mirror is damaged - or that's what they say (haven't needed to test it yet!).
     
  22. MikeC

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    Just for the record - 0 stuck/dead pixels on a 2 1/2 year Marantz VP12 (DLP)

    Mike
     
  23. yoskiwoski

    yoskiwoski
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    i actually think i'm going to keep it, it isn't distracting unless i get up and look for it or maybe on a dark scene, still haven't seen any other second hand ones for as cheap! :thumbsup:
     
  24. ROne

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    None on my Z3. No dust blobs either.
     
  25. lee789

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    I had another look at this last night, they're a dull green on a black image, which I can only just see from my seating position if I look hard, but you wouldn't see them if you didn't know they were there, unlike the screen shots I've seen of dead pixels. When moving images are on the screen I lose them straight away.

    Lazy may be what they are, as they may well change colour during moving images but react slowly. Thanks Kramer - I've got Lazy Pixel.

    But I certainly don't see it as an issue.

    Just for the record I don't need an optician my vision is 50:50 :D .
     
  26. Nick Odgers

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    I have two green dead pixels on my Phillips Monroe but from a normal viewing distance and with my geriatric eyesight I cannot see them!
     
  27. martian1

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    Well 1 dead pixel after 45hrs use. Asked for it to be looked at [infocus 7200] etc not really expecting a lot, they have sent it back as follows
    Replaced optical engine [OUCH!!!] cleaned unit,reset factory defaults,flashed unit with current software.performed final test after 1 hr burn in.
    How much would that lot cost out of warranty!
    Anyway hope alls well now. oh and i got projector back within a fortnight in a much better box with tonns of foam padding etc. I would just like to add a big thumbs up to HIFIX my online retailer who unlike me have been very calm and proffessional about this i cannot rate them highly enough..happy shopping all !
     
  28. MovieAddict

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    none (that i can see) on my Mits HC2000 and Sanyo Z2
     
  29. Strider123

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    None on my AE 700. Still working fine with 200 Hours on it.
    :thumbsup:
     
  30. Mr.D

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    no dead pixels on my very first panny ae100 from discount Tv with a dead pixel check. ( this one is still going strong for my workmate who bought it from me : additionally its been submerged in water after his pipes cracked in cold weather...luckily it wasn't switched on at the time , Panasonic serviced it although it worked fine after he dried it out)

    no dead pixels on my sony HS20 again from discount Tv with a dead pixel check.

    bought one ae200 and two ae300s second hand and none of therm had dead pixels.
     

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