Question about NEC MultiSync MT840 Multimedia Projector

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Double image I have an  NEC MT840  multimedia projector, its aprox. 7 yrs. old. It shows a complete double image on screen.

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  • t0mmyb0y Apr 13, 2008

    its not out of focus

  • t0mmyb0y Apr 15, 2008

    The unit doesn't seem to be "out of focus" but it does have 2 images side by side .

  • t0mmyb0y Apr 20, 2008

    i think i checked it out pretty good ? .......no apparent cracks, all squares of glass in place, mirrors OK, etc..
    The picture shows a (as in the menu words),there are the darker main words and the double is right next to it but not as quiute as dark( like a shadow).

  • t0mmyb0y Apr 21, 2008

    i have not put in any pix..strickly menu...all blk. shadow (2nd image) lighter .

  • t0mmyb0y Apr 24, 2008

    can you give me a little more info. on this "lcd panel" ? As mentioned b4 I don't have it hooked up to anything , strickly reading the "menu".

  • t0mmyb0y Apr 25, 2008

    Where might i get this jewel ? I've looked on line...no real help.
    Do you have a part # for it?

  • t0mmyb0y May 01, 2008

    What does this (aproximately) cost ?
    I would love to have some sort of part #... I can't find any "blowup pix" or anything other than the owners "type" manual.Which is pretty much useless.....

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I think one of the glass pieces is cracked or out of position and so creating a double image, please check the lens for anything that looks abnormal.

Please let me know what you find

Posted on Apr 15, 2008

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  • Benjamin Patri
    Benjamin Patri Apr 20, 2008

    Do the two images both have the same colors only one darker than the other or is one image more red and the other more green or some other color.

    Also, have you tried a different cable at all or are you using any type of splitter?

    Thank you.

  • Benjamin Patri
    Benjamin Patri Apr 21, 2008

    First you must check or replace the external RGB Cable before doing anything else to make sure it isn't the problem if you haven't done so already.

    Next please check the LCD Panel which I think will need to be replaced and I'm sorry to say but it won't be cheap.

    Let me know what you think after doing this.

  • Benjamin Patri
    Benjamin Patri Apr 25, 2008

    the lcd panel is an internal part that helps scale the picture to optimal quality, replace it and I believe you will solve your problem

  • Benjamin Patri
    Benjamin Patri Apr 25, 2008

    It looks something like this

  • Benjamin Patri
    Benjamin Patri Apr 26, 2008

    call 1-800-338-9549 and tell them what you need and they can help you get it, (manufacturer's number)

  • Benjamin Patri
    Benjamin Patri May 01, 2008

    I'm sorry that I can't get a specific part number but NEC doesn't give any easy way to get one. It will probably cost $300-$600 but you will have to call them to see.

    the best info I can give on this part is from a manual
    pg 37

    http://www.qvctc.commnet.edu/media/manua...

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Here is a link for the user guide. Try to adjust the focus, if that did not work you can also try a factory reset found on page # E21.

Posted on Apr 13, 2008

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Hello,

Check the external RGB Cable,Fly-Eye lens,LCD Panels

Posted on Apr 13, 2008

  • jony_lol_des
    jony_lol_des Mar 04, 2013

    wear is rgb cable tell me plz

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Posted on Apr 13, 2008

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Use this link to get company support:

http://www.necvisualsystems.com/SupportCenter/SupportTracker/

Posted on Apr 13, 2008

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