Question about SharpVision XV-Z1U Multimedia Projector

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What is a blue lcd?

I have a yellow dot on the screen from the projector and they said I new a blue LCD, what is it and where do I get it?

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  • Carl Cohen Feb 02, 2009

    Sharp xv-z1u

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Your LCD panel of the projector seems to be malfunctioning , provide the model details.

Posted on Feb 01, 2009

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I work in a school and one of the projectors has a yellow area in the centre of the projection. The lamp has been replaced ?


Your Blue LCD Light valve is burned or has dust on it which blocks the blue color.

With RGB, the absense of blue (Red + Green) is yellow.

If you're lucky a simply cleaning at the light valves will solve your problem. Otherwise your looking $$ for a new LCD valve.

May 18, 2011 | Hitachi CP-RS55 LCD Projector

1 Answer

Image is bright but there is a slight issue - on the left hand side a purple line displays vertically. Anybody knows why is this fault appeared and how could it be solved.


There is three LCD in the projector red, green and blue. If green LCD make any fault mean line or dot or dots then screen show these line or dot in purple color:
If line is very straight and sharp edges then green LCD is faulty and need to be replaced.
If line is not straight and faded edges then some thing in LCD block so your projector need service

Feb 22, 2011 | Sony VPL PX40 Multimedia Projector

1 Answer

Screen is yellow in the middle?


If the yellow area edges are sharp then the blue LCD is faulty and need to be replaced.
If the yellow area edges are not sharp and you get the multi color background in you image the your need service. due to dust on LCD panals the light is not pass on properly so you open the projector and clean the LCD block.
(cleaning of LCD block and other parts of the projector is a very technical job please very very carefully)

Jan 25, 2011 | Panasonic PT-AE1000U LCD Projector

1 Answer

Blue dots on screen. what is it and can it be fixed? a new bulb was recently installed.


Yes,it is repairable.Blue dots on screen is sign of LCD failure at optical block assembly. There are three LCD on the optical assembly RED,GREEN and BLUE. Blue LCD failure causes blue dots on screen. Repair should be done by replacing blue LCD. Note! LCD replacement needs Extra care and precise tools such as oscilloscope and color pattern generator , for the color alignment after replacing LCD. But if you can afford, replacing the optical block is better,

Sep 26, 2010 | Sony Grand WEGA KDF-42WE655 42" Rear...

1 Answer

Projection has yellow tint


From your description, it sounds like a problem with the blue color. Green LCD=purple onscreen, Red=cyan(baby blue) onscreen, Blue LCD=yellow onscreen. It could be a lot of dust on the blue lcd panel, or worse, might be a burned polarizer filter behind the lcd panel due to excessive heat. If you can focus on the yellow and its tons of yellow specs, its dust. A burned filter however, must be replaced. A technician trained in projectors will have to do it. The filter material is glued to a thin glass panel and is replaced as a single filter. It's a very involved repair.

Sep 04, 2009 | Hitachi CP-X251 LCD Projector

2 Answers

Yellow image produced by DP8200x


the light filter on the blue lcd is fried and needs to be replaced. it makes sure only blue light comes therough that lcd panel. when it's light is blocked from coming through, only the red and green lights can be seen, hence the yellowness (red light+green light=yellow light). it's common with lcd projectors. unfortunately, you can't buy that piece seperately. you need to buy the entire optical engine, which isn't cheap (almost $2000).

Jul 31, 2009 | ASK Proxima InFocus Projector lamp for...

2 Answers

Large dot in the middle of the projected display


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.

May 21, 2009 | Sharp XG-E3500 Multimedia Projector

2 Answers

Yellow in center of picture


The blue device is dying allowing green to shine thru instead of white. Very common problem called color decay. Happens on average about evey3-4000 hours. I suggest next purchase a dlp product, they are immune to this problem. Good luck

Mar 29, 2009 | Sharp Notevision XG-NV6XU Multimedia...

2 Answers

Bright yellow


hi everyone i have the some yelow problem with CANON lv s3... any ideas where can i found this blue lcd polarizer...e-mail me sugestions jonasjhony84@hotmail.com

May 12, 2008 | NEC MultiSync VT480 Multimedia 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.

Apr 22, 2008 | SharpVision XV-Z1U Multimedia Projector

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