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AV and Multimedia Related Thread, White spots on projector in Technical; we have had these issues they cant be repaired and tbh i have to change brand im staying away from ...
  1. #16
    kevin_lane's Avatar
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    we have had these issues they cant be repaired and tbh i have to change brand im staying away from sony you want to get one these NEC M230X Projector brill i got them from av parts master avpartsmaster.co.uk guy their called paul jennings nice bloke

  2. #17

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    My projector is an astronomy machine

    We have an NEC NP115. It started doing the dead pixel thing about 2 months ago (the projector is about 2.5 yrs old). It started off with a single dot, and not has hundreds. There are both white ones and black ones, and now there are so many it is nearly impossible to watch. I'll be checking now to see if anything might be covered.

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    Yes you can get it with DLP but on LCD it is a mystery?

    Marc
    Projector Engineer

  4. #19

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    Just to say we've got 2 NEC NP215s now spraying white paint...well that's what it looks like...they are DLP.
    None of our LCDs ahd this problem...our older LCDs started to go with a yellow haze.

    Jon

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    Resurrecting an old thread, but this has recently happened to one of our Toshibas. The general consensus is that you need to replace the DMD chip: DMD Chip

    Considering the cost is a third that of a new projector, I don't think we'll bother taking the chance.

  6. #21

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    We've gone with Epson EB-X11...bit of research shows Epson are rated the best for projectors...but I guess some of you knew that already.

  7. #22

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    Yep we did, great value more cost effective than any LED projector make sure you get the 5 year education warrenty.
    But what ever you do DONT BUY DLP for schools.

    Marc
    Projector Engineer

  8. #23

    Oaktech's Avatar
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    I've had an Epson do this... and an NEC - both LCD, turned out to be a driver chip breaking down (supplied by NEC) was more expensive to have repaired than to get a new projector.

  9. #24
    timbo343's Avatar
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    Sorry to bring up an old thread but we have some NP200 projectors which have the white dots on. Just got a quote from NEC about this, 500 to replace.

  10. #25
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    White dots are usually indicative of dust/ dirt on the lens or the DMD chip is faulty. Might be time to look for some new LED projectors... Depending on what you can afford.

    How old are the projectors? Still under warranty?

  11. #26
    Joanne's Avatar
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    I have 2 projectors doing this. An NEC NP-100 and a Promethean PRM-35. I've been told they will need new projectors, as they are out of warranty. Gutted!

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    Quote Originally Posted by Joanne View Post
    I have 2 projectors doing this. An NEC NP-100 and a Promethean PRM-35. I've been told they will need new projectors, as they are out of warranty. Gutted!
    I used to have the NP-100 in black.

    Are you sure as to whether it is dust or the chip?

    Use the focus ring on the projector then rotate it fully in one direction and then the other. The white dots should come into sharp focus as small specs (dust) if this happens it is dust and the projector will need a clean.
    Use a can of pressurized air to blast the dust inside, this should blast out the dust. If it is the case the dust should have reduced and with regular servicing it should be working normally. Also use a vacuum to clear out the vents etc.

    If not the chip needs replacing which is not really cost effective.

  13. #28
    Joanne's Avatar
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    Quote Originally Posted by IT_Ninja View Post
    Use a can of pressurized air to blast the dust inside, this should blast out the dust.
    Just to add to this comment... make sure the projector is fully cooled down before doing this. I've heard stories of flame throwers happening when a hot projector has been blasted!

    It's definitely not dust. I've had an expert look at it! Just getting a price for a 2nd hand projector to replace it.

  14. #29
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    Quote Originally Posted by Joanne View Post
    Just to add to this comment... make sure the projector is fully cooled down before doing this. I've heard stories of flame throwers happening when a hot projector has been blasted!

    It's definitely not dust. I've had an expert look at it! Just getting a price for a 2nd hand projector to replace it.
    lmao, yes I concur!! I would also advocate not doing this while the projector is on and blasting the projector with highly flammable compressed 'air' - it's not like it happened to me and I kinda crispified my eyebrows and hair

  15. #30
    Joanne's Avatar
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    Ahhhh hahahahah! My husband did it at his school... that's how I know :P

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