Question about Sanyo PLC-SU50 Multimedia Projector

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Projectors screen turns yellow,on and off,after awhile has been looking white

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You are describing Color Decay. Welcome to the world of LCD projectors. The blue device is the first to go, thus the yellow fringe. You must have about 3-4000 hours on the projector. Replace the product with a dlp product and it will last a lifetime, or until you want something with newer features.

Posted on Jul 07, 2009

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SOURCE: yellow tint square inset 2 projectors!

The blue polarizer "in" is burnt. You need to replace it.

Posted on Aug 09, 2007

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Panasonic PT-AE2000U yellow spot


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I have a Christie LX100 Projector when projecting a white image there is some yellow tint. Is this something that can be fixed?


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I have a VT465 and the projection back ground is yellow and I can't get it to be white


If you are talking about the actual image that is coming from a laptop being yellow instead of white, then this is caused usually by a bad signal cable running between the computer and the projector.
To be more specific: All colours in a projector get made up in some way between red, green and blue. White is all of these colours at maximum, yellow is made by red and green at maximum but no blue. If your image is Yellow when it should be white, then the blue signal information is not reaching the projector. This can also happen within the projector or computer itself but is less likely. If your using a VGA cable (15 pin cable) then blue is run through pins 3 & 7 (positive and negative respectively), see if your cable is either missing these pins on either end or if they are bent, although it's more than likely within the cable itself. You can test this theory easily by trying to put something blue on screen, if the blue signal isn't getting through then it'll appear black.
If changing the cable doesn't solve the problem try testing the computer by trying to use a different one, and test the projector by plugging in a monitor or another projector.

If you are getting a yellow screen without sending signal and just trying to get the "no signal" or "no input" screen white, then this won't be the case.

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1 Answer

Hi there, my dell projector 1800mp is not projecting an image on screen and it only black lines across. what should I do to fix it?.


After turning on the projector, press "+" and "-" buttons on the control panel

simultaneously for 3 seconds and release the buttons when screen goes blank.

2 Press "+" and "-" buttons again to exit the diagnostic mode.

3While in Self-diagnostic mode, the screen will run a seven-color-cycle test as

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Red--> Green--> Blue--> White--> Watchet Blue--> Dark Green--> Yellow.

Ensure that the colors of the test pattern are correct. Contact Dell if the colors are
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1 Answer

I have the same problem as someone else has posted on this site. When I start up the projector, x1a, it goes directly to a faint white screen without any button response. With or without a video source...


replace the colorwheel. part # 525-0144-00. you can get it through av solutions in ny. www.avsolutionsny.com it's not that difficult to replace, but if you are unsure about it, you can send it it to them to repair as well. they are an infocus service center.

Nov 15, 2009 | InFocus X1a DLP Projector

1 Answer

Image has big yellow


Hi Zenmast

This is a burnt LCD that will need replacement. If the circle is yellow on a white screen , then it is your blue LCD that will need replacement.

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1 Answer

Infocus Litepro 540


Hi John

Hook up a PC and check if you get a image.

If you don't , then there is a Mainboard problem !

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2 Answers

Yellow tint square inset 2 projectors!


swounds like a default setting has been changed .. Try finding in the manual how to do a master reset to factory defaults

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