Question about InFocus IN72 Multimedia Projector

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White vertical line on left side of screen

White vertical line showed up. Took projector down and cleaned it. Started the projector again and white line was gone. Took about 5 minutes and the white line returned. Line is about 2 inches wide and is the full height of the picture

Several vertical white lines appear on the projected image. Tapping the unit sometimes has an effect, causing one or more of the white lines to disappear. The problem resolves itself after about 15 minutes after power up.

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  • gguice Feb 09, 2008

    Did you fix this problem. My X1 started doing thwe same thing.


  • ravenmoon Feb 10, 2008

    I have the same problems...any solutions or causes?

  • TuskenRayder Mar 08, 2008

    I have not yet solved this problem, but I have improved it somewhat by adding a number of washers where my ceiling mount screws into the until in case the screws were too long and making contact with some component within the casing. The result is that there is now only one of these lines that appears and disappears within a few minutes.

  • tloy Jul 16, 2008

    I have the same problem with my x1.  I lowered the front raiser and it helped for a couple of days.  I also jiggled the vga cord which helped.  Now it is doing it again, although not as much.  I don't want to pay to have this thing fixed (has anyone sent it in and how much was it?) and then have to buy a new bulb soon too.  I'll just buy a new projector when the bulb goes out instead.  But would like to be able to fix it myself if anyone has been successful. 

  • luckystreak Jul 16, 2008

    did anyone ever get this problem resolved? I started with one line now I have 5. Customer service is no help as they do not know vertical from horizontal. I gave up after that with them.

  • Anonymous Oct 04, 2008

    We are still having the problem. If I give it a whack on the side it stops for a while. It does not start doing it until you have become involved in the movie you are watching, so it seems to warm up to the problem- in other words, it does not happen upon starting up the projector. I will not buy an Infocus next time. Will try the Dell. The bulbs are cheaper.



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Omg, I just figured out why OUR projector was doing this! There was an adaptor plugged into it that we use to hook it up to cable to watch games/tv shows sometimes...once I unplugged that from the projector the lines dissapeared!

Posted on Oct 02, 2008

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I had a smililar problem after taking it apart i realised that i had screwed my mount skrews into the video main board and cracked it along with a few soldered wires, if you havent done any physical dammage to it try a firmware upgrade

Posted on Mar 06, 2008


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I have a Dell 2400MP projector that had the same problem of vertical white lines appearing over the screen.

This may seem like a simple solution, and I don't know if this will work for you, but the way I solved the problem was simply to press the bottom side of the projector, until the white lines disappear . Until now, the problem has yet to resurface.

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My EP719 had the same problem. Did it once, briefly, soon after I bought it, then not again until recently, when the line came back more frequently and wider.


The projector was 20 days past warranty, and the company would not honor. So much for customer satisfaction and loyalty. Last piece of Optoma equipment I will ever buy!


Anyway, I found a web item on another model of Optoma projector with the same problem. The solution this guy tried was -- I kid you not -- rapping on the thing. With nothing to lose, I tried this on mine. Tapped lightly on the top and noticed a change in the width of the line. Hmmm ... it was sensitive to this.


Tapped harder. The line got narrower. Rapped pretty hard -- thump! -- and the line disappeared.


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