Question about Mitsubishi WD-73732 73" Television

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Mitsubishi WD-73732 has 1 inch blue/purple band at screen top.

I have a ~1.5 year old Mitsubishi WD-73732 and it just recently started having a 1 inch blue/purple band at the top of the screen. Perhaps it is a coincidence but I noticed it after I started using an Atlona VGA to HDMI scaler to extend's my laptop image on the TV. The band exists on all input sources (PS3, Cable Card and the Atlona scaler). I am still on the original bulb. The band is more blue on the left of the screen and more purple on the right.

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  • Lou Sigety Feb 15, 2009


  • Anonymous May 12, 2009

    I have the same issue, it's more like a wedge, thin on the left, thicker on the right. It's not a priority to fix it unless it gets worse, but curious if anyone has fixed this issue.

  • Lou Sigety Oct 19, 2011

    The solution to the original post of "Mitsubishi WD-73732 has 1 inch blue/purple band at screen top" was resolved (years back) by a technician who replaced all sorts of components (which was fortunately under warranty). Had it not been under warranty, I would have considered junking it - especially since the prices of new 73" DLPs have come done *so* much. I was a bit concerned about how much he took apart and replaced but it has been working fine ever since. I sure am glad I had that warranty (at that time).
    However... I like the set so much I bought the top of the line 60" Mitsubishi DLP on line for $900 total - but since the price was so low, I *did not* buy an extended warranty. Also in consideration was that I can easily move that 60" TV compared to the 73" one - if/when I have to simply junk it some day...



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Is this a DLP or LCD projector?

Posted on Feb 14, 2009

  • Billy Bauer Feb 16, 2009

    If its a fairly dark band, it may be a defect in the light tunnel in the optical path between the lamp, color wheel and the DLP imager.

    The light tunnel has mirrored surfaces which are typically glued into position. With the heat that is generated by the lamp, the adhesive may fail, allowing one or more mirrors to get in the light path.

    Its rare, but a defect in the lamp itself can cause a band of color. Take out the lamp when its cooled down, being careful not to touch the glass with your bare fingers, and look into the lamp. The back reflector should be shiny and without blemishes or breaks in the reflective material.

    And, its also possible to have a problem with the color wheel and the lens optics as well although I haven't encountered this myself.


  • midnight1111 Sep 10, 2011

    I have the same problem there is a light purpleish band along the top of the screen that gets wider going from left to right. I am currently replacing the bulb. I don't want to replace the light engine, thanks for any suggestions.


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Hey midnight1111, did replacing the bulb fix your problem becasue I have the same problem with the same modle of tv?

Posted on Oct 19, 2011


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