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Projection Spots (White/Dust) - How to get rid of them?

Discussion in 'Displays' started by Damage Inc., Feb 9, 2009.

  1. Damage Inc.

    Damage Inc. Active Member

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    Hello again,

    sorry if there is already a thread about it.
    Strangely it doesn't seem like it, unless it's stuffed away somewhere.


    So, I use a projector for my little home-cinema and it's quite good.
    But I have at least one significant problem with it; there are big white blurs on the screen.
    Now I know that those are (most likely) tiny pieces of dust projected along onto the screen.
    Only, how do I remove them without scratching any glass or smudging the image even more?

    I have had the thing open once before for the same reason.
    The spots were worse before, so I just kinda blew over every lens and surface.
    Yet there are still a bunch of spots, only not as strong (and many) as before.
    There is just this one big spot in the center-area of the screen I'd really want to have gone.
    The rest of them, dimmer and on the edges, aren't as annoying or visible even.
    But this one spot... every time there's a dark and low-detailed moment, all I see is that spot.
    This doesn't do my current 'Batman'-marathon justice, if you know what I mean...

    So I hope that there is a solution to this, and that it's not something permanent.
    By the way, the projector is a 'Toshiba TDP-T9' with DLP-technology, if that helps.


    Edit:
    I forgot to add; also which parts should I and shouldn't I clean.
    I'm also not sure if for example the inside of the front lens is reachable.
    The spots might as well be all the way in there...



    Greetings,
     
  2. Damage Inc.

    Damage Inc. Active Member

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    Aw, nobody has any tips on this?
    Or even another site with a guide or anything, cause I can't find much about it.

    I'm going to try and get rid of the spots today, but I'm hesitant to touch any glass surfaces anyway.
    So I don't know if it would help any then. [​IMG]
     
  3. SherardP

    SherardP Well-Known Member

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    I suggest Dr. Clean from Digital Innovations. Its pretty good stuff as with compressed air cans. Stay away from glass but try to blow everything out. If opening up the PJ scares, perhaps you should send it in for service.
     
  4. Damage Inc.

    Damage Inc. Active Member

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    Well, I desperately just opened the thing again to try and see if I could find anything.
    I observed all accessible areas and parts thoroughly, but there isn't much to find.
    Anything that's reachable is pretty much spotless;
    The front-lens (maybe not on the inside, if anything not much), the lamp-cavity is also clean.
    There is a lot of dust on the fan and a bit around it though, but it's very sturdy and stuck too.
    However, it's of course not part of the projection, so thát dust can't be causing it.
    Also not dust that míght come off as the spots in the projection are constant.

    I think I know where the spots are:

    First of all, I'm not sure if all projectors are built the same.
    But there is this small component which is a flat piece of glass, held by a small metal frame.
    Right at the front of the lamp, which is also just spotless.
    On the glasses side where the lamp is there isn't anything on there either.
    But on the other side (on the inside), I can see because of depth, there is some dust or something.
    I also checked with a magnifying-glass.

    Now, the little frame is held down by one tiny screw.
    First of all I couldn't really find a good fitting screwdriver,
    but anything that would grab onto the center couldn't get it turned.
    It's just really tight, perhaps on purpose?
    Anyway, should I be able to get that thing off and clean it,
    without opening up the whole projector, or is that not the meaning?

    Otherwise, I'll just have to keep staring at it with some bright spots.
    It's really annoying and ruining some shots in each movie. [​IMG]

    - - - - - - - - - -

    By the way:

    "Sending it in for service.", can I just do that at the manufacturer?
    Or would I have to have some kind of receipt and bring/send it to the store?
    Also, wouldn't cost that a lot?
     
  5. Damage Inc.

    Damage Inc. Active Member

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    Man, I'm still stuck with this.
    I finally got a reply from this one company, which suggested me to send it to them for some checkup and all.
    Which would cost... well, say about a good BD-player I could buy instead.

    I tried to open it up even more today, that's what happens around here in the end usually.
    Except I just couldn't get this thing to open!
    I removed like one screw in the middle, which seems to hold the two plastic halves of the housing together.
    Also some other parts like that adjustable "foot", which only resulted in a hole.
    For the rest there isn't much logical I could loosen to make anything come off.

    I mean, I just can't get the plastic case off, unless I'd just break it or something.
    Why can't I find anything about cleaning projectors or even opening them?
    What's like all this mysterious secrecy revolving around the projectors? [​IMG]

    In the end, it just annoys me, I'm just staring into the projection like I just got flash-photographed...
    It are be nut funneh anihmoar...
     

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