Question about Sony VPL CS5 Multimedia Projector

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YELLOW SPOT ON SCREEN

WHEN IMAGE IS PROJECTED ONTO THE SCREEN THERE IS A YELLOW SPOT TOWARDS THE MIDDLE OF THE IMAGE. I WIPED THE FRONT LENS BUT IT DID NOT GO AWAY. COULD IT BE BURNED ON THE INSIDE BULB OR SOMETHING?

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  • Mikadododo Mar 16, 2008

    I also have a large yellow area in the centre of my projected image. I would appreciate any advise abouit this problem

  • Doug Kilgore
    Doug Kilgore Nov 28, 2008

    I also have the yellow spot. The image/spot has a clearly defined and sharp margin, and seems to be some sort of geometric shape (ie - not a round dot). I removed the bult and examined it and it appears to be perfect - no burn in or marks of yellow detected on the lens. I'm suspecting the prism or LCD next but don't know how to examine these...

  • dshadank Mar 27, 2009

    i have yellow straight lines on the left corner of the screen!!

  • ggalea Apr 07, 2009

    I'm an electronics eng. techn by training. I have the same problem. This is not DUST, or a SMUDGE. It is a pixel problem as the problem "speck" is geometric and is exactly in the place of the pixel realestate. It is yellow too. I imagine that this is a defect with the individual transmission via the pixel transister driver. I have taken mine apart and determined that this is in the core of the image driver. It would appear a design flaw and, apparently, common with this model of Sony projector. The only way to fix this with out spending $1,500 (yes, no sh#@!) is to go after Sony as a collective and make big big big NOISE!

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There may be a dust fleck on one of the LCD screens inside your projector. I had a similar problem and managed to clean it. But it requires you to dissassemble the entire projector !!!. If you are not technical, don't do this yourself. !!!

Posted on Jul 26, 2008

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If it is non-perpendicular in only one axis, then two opposite edges will be different lengths, and if out of perpendicular in two axis then no edges will be the same length.

The solution to this problem is that the center axis of the lens must be perpendicular to the surface projected on, in both vertical and horizontal axis.

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bgrenco@aol.com..

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Good Luck.

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