Question about Dwin TransVision 3 Plus Multimedia Projector

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Bulb or power problem?

Our Dwin is about 4 yrs old and suddenly it powers up for about a second or two then turns itself off...lamp never goes on?? is this what happens when we need to replace the bulb or do you think its another problem??

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  • Anonymous Jun 18, 2008

    We've got the same problem and I was wondering the same thing. Time for a new bulb? If so, where do you buy them?

  • Anonymous Nov 03, 2008

    Any Answer

  • Anonymous Dec 28, 2008

    It's not the bulb, it's completely dumb luck when you have the problem and then get it to work...I recommend playing around a little, unplugging the main unit, unplugging the projector, and trying to reset the two...just keep trying...stay persistant...the bulbs are too expensive to just throw money at another bulb.

  • Anonymous Feb 22, 2009

    Same exact scenario here.

  • dbundy68
    dbundy68 Dec 05, 2012

    We have this problem replacing bulb did not fix it still the same problem. Still looking for a solution

  • dbundy68
    dbundy68 Dec 05, 2012

    Same problem replaced bulb same problem. Still looking for a solution but its not the bulb

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You have to order it on the website and they are terrible about getting back to you. Worste customer service in the world. Terrible

Posted on Nov 19, 2008

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Dwin lamp turns off


I design and implement switching power supplies for the commercial lighting industry. I also own a DWiN Transvision and have opened it and worked on it several times. I believe I can answer this question.

The DWIN projectors use a proprietary switching power supply to strike the lamp and keep it burning. The power supply is extremely sophisticated and maintains tight voltage and current tolerances. This is important because the halides in the lamp are damaged by power supply fluctuations. The halides can often be seen in an unfired lamp, they appear as small specks of dirt or tiny beads inside the lamp envelope. When a metal halide lamp is struck, the halides (which are rare earth elements) vaporize and cling to the inner wall of the lamp envelope. The mixture of halide gas in the lamp is what determines the color temperature of the lamp, as well as the accuracy of the lamp across the entire color spectrum.

One of the ways that DWIN is able to deliver such great color is because they use a lamp which delivers this great color across the spectrum, but, as I pointed out earlier, can be damaged by fluctuations.

The power supply contains three switching sections and five references for such things as input and output voltage for each psu section, as well as overcurrent demands from the lamp.

From my experience, your lamp(s) are all exhibiting issues that require replacement.

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