Question about Toshiba TheaterWide 52HM84 52" Rear Projection HDTV-Ready Television

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White vert lines 1 inch apart, toshiba rear projection

I am getting white vertical lines on my toshiba rear projection tv. They are pretty consistent but will flash out now and again for a few moments at a time unless i leave it on for a few hours with a black screen but as soon as it need to produce an image or movement they come right back. I have replaced the lamp, and removed all other devices for days at a time. I moved it once and ran it with a tivo and no hd signal and after a couple of days it went away for a month. I started adding devices and it was fine. I added an hd box from my cable company, fine. I switched to a hd dvr and the lines came back. the lines are there regardless of imput being used, xbox, dvd player, tivo or hd dvr.

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  • jholm7 Jul 08, 2008

    Here is a pic of the TV in all its glory.

  • jholm7 Jul 08, 2008

    No. Could DLPs need recalibration during their life times? Do I need a repair guy to do this?

  • jholm7 Jul 10, 2008

    I have searched for DMD Boards and I have all the Toshiba schematic diagrams but I do not see it. Is it a set of components? I also have the service manual, is there something there worth trying?

  • Anonymous Sep 11, 2008

    I have the similar problem. I can see white thin vertical lines spaced ~1 inch apart. On top of that, when I turn on the TV, it will give buzzing sound and sometimes the LED indicates a solid red with green blinking.

    Is it the problem with ballast board?

  • s4gal Sep 11, 2008

    I have similar problem with white thin vertical lines spaced ~1in apart. Also, when I turn on the TV, there is a buzzing sound coming from the rear left of the TV. The LED indicator will have solid red with blinking green. After a few seconds, the picture will come up but the white vertical lines will remain on the screen.

    Any ideas what is wrong?

  • mavtek May 11, 2010

    Have you calibrated the convergence?



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From further research it sounds like you experiencing a failure of your DMD board. Here's a forum dedicated to the topic of your television.

Posted on Jul 08, 2008


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