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Projectore misaligened get three faces of differnt colour

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Need more info. like, the make and model of projector.

Posted on Aug 19, 2009

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Posted on Jan 02, 2017

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1 Answer

Optoma lamp led flashing


the are a few reasons for this but the most two common ones are the intermitant lamp failure or colour wheel tracking rotation sensor when you startup the projector the lamp should drive half brightness approx then you should hear the colour wheel drive if it is at this point the projector goes off and restarts the chances are it is dust on the colour wheel sensor.Rmove sensor this has three wires going to it supply and pulse wire it is mounted on a small pcb board with one screw remove the screw and board complete with sensor and clean the sensor with a cotton bud dipped in spirits then wipe over with clean cotton bud.This usually solves the problem.

john www.jvsvisual.com

Apr 17, 2013 | Optoma EP774 Projector

1 Answer

The left side of the screen is blueish?


The blue or yellow haze problem in this projector is because of two factors. 1) Dust buildup inside the optics and 2) Fading colour filters used in the internal optical process.

Inside the projector the white light from the lamp is split into three distinct colours of red, green and blue. Each colour illuminates their own monochrome LCD. Those LCDs are mounted on a prism that combines the separate images and displays the result you see via the lens.

The optical process to split the light up inside the projector is fairly complex and involves many light filters and mirrors to direct the light to the appropriate lcds. Those filters and lenses accumulate dust and also fade over time due to heat and other environmental factors.

I know that sharp sells replacement filters at $100 a piece. I do not know if Hitachi sells replacements.

To remove the dust and change filters you have to take apart the projector in a fairly complex way. I do not suggest that the average user do this. Good luck!

Mar 18, 2009 | Hitachi CP-X445 LCD Projector

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.

Dec 31, 2008 | Sharp XV-Z2000 Multimedia Projector

1 Answer

Acer projector


A DMD has no inherent colour capability - it's just a configurable mirror array. If you want to do full-colour projection, then, you'd expect that you'd have to use three DMDs and three coloured filters - red, green and blue.
But if a single DMD's switched in synchrony with a rotating "colour wheel" - a spinning tri-colour filter that lets through red, green and blue light in turn - then the very rapid switching speed of the DMD lets it lay down red, green and blue images in such fast succession that the result is a perfect colour image.
You can do the same trick with a single LCD panel, but it's not a good idea; LCDs are transmissive, rather than reflective, devices, and block something like half of the light that tries to get through them. To maximise brightness in LCD projectors, a three-panel design works better. If you try to pump the entire output of a super-bright lamp through one LCD, keeping it cool becomes rather challenging.
The extreme smallness of the moving parts on a DMD mean that it behaves like a solid state device, not a mechanical one. For all their complexity, DMDs have very high Mean Time Between Failures (MTBF), and well-made projectors based on DMDs can be expected to last easily as long as LCD units, and probably longer. If a DLP projector fails, it's not at all likely to be because there's something wrong with the DMD.

Sep 06, 2008 | Acer PD100 Multimedia Projector

4 Answers

Optoma DV10 MovieTime Color Wheel replacement


Hi guys

Your best bet on getting your hands on a Service Manual would be to contact Optoma themself.

As for changing the colour wheel , it is pretty straight forward if you were able to open up the unit and get to it.

The colourwheel is mounted with three tiny scrws to a bracket in which it sits. And the bracket in it's turn is fastenend to the body of the Projector with two tiny screws.

First unscrew the bracket from the casing of the Projector and then take off the three screws that holds the Colour wheel to the bracket. Replace and do the whole proses again - but obviously just the other way round.

This is really easy to do yourself.

Give me a shout if you need any further assistance.

Thanks for using Fixya and good luck.

May 07, 2008 | Optoma MovieTime DV10 Multimedia Projector

2 Answers

Coloured patches on screen, usualy in corners


Hi,

your suspection is right that there may be a build up of fine dust in the projectors over time and could this be affecting the three LCD panels. you can open the optical unit and service the same. Your problem will be solved. By replacing lamp is not the solution

Viren

Nov 17, 2007 | Hitachi CP-S225W Multimedia Projector

2 Answers

Cannon Projector LX-V5


Hi guys

Try using a different signal cable.

If this doesn't solve your problems , you will most probably be looking a new Mainboard.

Very expensive part to have replaced , so try and get a dealer that can repair.

Nov 12, 2007 | Compaq iPAQ MP2810 Multimedia Projector

1 Answer

Burning Smell


your projector must be inspected by qualified service technician to fix the real problem because electrical arcing maybe differnt things.

Aug 03, 2007 | LG LP XG2 Multimedia Projector

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