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My Optoma projector has vertical white lines across it, how can I fix this?

Last Modified: 2012-06-27
After transporting my Optoma HD32 projector from work to home, I turned it on and saw vertical white lines spaced evenly across the entire display.  I am wondering what the cause of this is and how to fix it (and prevent it).  It has actually happened before after moving it, but the lines went away after a few minutes on their own.  This time, they have not gone away after 30 minutes.  I have tried resetting the projector settings, tried turning it off and on again (twice), but the lines remain.  Googling hasn't turned up much, I did see one person that suggested hitting the projector with your hand. I eventually tried this and it did alternate the thickness of the lines, but did not clear them.  Any suggestions (especially if you have experienced this) would be greatly appreciated.  Thanks!
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