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Projector lamp shows blue on white screen

When I turn on my projector...the screen in blue instead of white...my red comes across as black...do you think a vga connection?

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The red is cutting out. white=blue+green+red. without red, you get blu+green, or cyan. if this was an lcd projector, i'd say it's a burnt light filter, the red lcd, or the lcd has come unplugged. but since this is a dlp projector, you have either a dmd board issue or a main board issue. either way, it'll be pricey.

Posted on Aug 18, 2009

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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.

Mar 24, 2011 | NEC Multimedia Projectors

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

My picture is coming out in black & white instead of color. What am I doing wrong


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2 Answers

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there is a burned-in spot on the polerizer light filter for the blue lcd. it makes sure the light is blue coming through, that's why it is black on a blue screen, and yellow when the red and green are the only light showing through. it needs to be replaced. pat # PFiLW0213CEZZ.

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1 Answer

Sony VPL-CS5 menu will not display


Give input signal to the projector and see that if the menu appears or not on the screen.
if menu comes on the screen then put the backgroung color to blue, instaed of black.

if nothing comes on the screen, then the LCD panels are faulty.

Viren
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1 Answer

Yamaha LPX 510


Welcome to the disapointing world of LCD projection. Your blue device is dying and thus allowing the green to come through instead of combining for white. I suggest buying a dlp product they are immune to this color decay problem. Good luck

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1 Answer

Blue instead of red colour afer replacing lamp in sharp xv-z2000


You didn't put your 3-D glasses on backwards, did you? :)

Seriously, if you are using the component inputs, be sure the three cables didn't get mixed up when you put the projector back. Otherwise, you might have an issue with the color wheel inside the projector, but I doubt it.

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1 Answer

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Hi there

If the problem occurs again , you will most probably have to replace the mainboard , as all the inputs of the unit lies on the mainboard itself.

Jan 18, 2008 | BenQ MP610 Multimedia Projector

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