Question about Dell 4100MP Multimedia Projector

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When we project to the screen, we are getting spots on the screen - mostly noticeable in dark. We blew for dust and still no change

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Check if the spots are pixel size dots and not dust. if so then the problem is not dust but dead pixel problems

Posted on Mar 24, 2011

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1 Answer

Dark spots on screen on DLP when screen is white


What size are the spots?
If they are 1 pixel in size you have stuck DLP mirrors.
If they are larger not symmetrical then it's most likely dust blobs in the optics near the focal point (on the DLP chip glass window)


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My rear projection TV has color spots in the picture, most noticeable on light color picture


What is the make and model of TV. If it is a Panasonic that has different colored spots such as pink, blue etc. Then you need t6o contact Panasonic as this is a memory reset that they have to perform on the LCD driver board. Other brands of LCD projection sets that have spots that appear all over the screen mostly on white back rounds are almost always dust that has settled on the LCD panels. This requires a technician to clean the LCD panels if possible.

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Blue spot on my hitachi 50"rear projection tv model 2006 50vs69a


Do you have a center speaker near it? maybe move it, that is what I have done and it seems to have gotten better.

Jun 09, 2009 | Hitachi 50VS69 50" Projection HDTV

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Yellow tint on screen, little bright spots on the dark blue.


http://repairs.sunnyoasis.com/sonylcdtv/ this is a link on what to do i had same problem picture is like brand new now good luck this takes about 3 to 4 hrs

Dec 26, 2008 | Sony KDF-E60A20 60 in. LCD HDTV

1 Answer

Gray spots on screen on a JVC HDILA model HD 56G 787


The HD-ila sets accumulate a lot of dust in the light engine. The worst offender is the little fold mirror just under the lens. I take my set apart about every 8 months or so to clean all the dust from the light tunnel and all lenses, mirrors, diffusers etc. The picture really regains it's pop when this is done. Unless you are a skilled technician though, I would recommend against attemptimg this procedure as you need to disconnect the individual color lcds. Check with a local service center to get it properly cleaned.

Oct 16, 2008 | JVC HD-56FN97 56" Television

2 Answers

Gray spots on screen on a JVC HDILA model HD 56G 787


The gray spots are caused by dust on your lens, very easy to clean.

Power down the TV.

If you open the right side access panel (right side as you are looking at the front of the TV) you can see it in the middle, it's not very big. Using a scratch/lint free cloth, gently wipe off the lens or use a vacuum to **** up the dust being careful not to actually touch the lens.

Replace the access panel and enjoy your spot free screen.

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1 Answer

HP vp6162 projector spots on projected image


you may have touched the bulb while changing it and minute traces of skin oil are on the actual bulb, with the machine cold, try and very carefully clean the bulb

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2 Answers

Looks like dust spots behind screen


I had the same problem and had a tech check it out.
It turned out to be dust on lens and mirror.
cleaned them and good as new.
Ihope this works for you.

Dec 29, 2007 | Sony Grand WEGA KDF-50WE655 50" Rear...

4 Answers

Dark spots on tv


I have the same TV, and I was getting the black spots on my screen as well. It is dust settling on the bottom mirror. Yoiu can call Mitsubishi and spend 150-200 on getting it cleaned, or you can do like I did and take the front panel off and the 10 screws around the edge on the back of the black plastic border around the screen. Then lift up gently and have someone hold the screen for you and gently dust the bottom mirror. I did this by myself, but it would be wise to have 2 people do it.

Nov 26, 2007 | Mitsubishi WD-62525 62" Rear Projection...

1 Answer

Dark spot on the top of the screen


May you should have a replacement for that, seems is has a factory damage on it!

Apr 05, 2007 | Philips 51PW9303 51" Rear Projection...

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