Question about Dell 4210X DLP Projector

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I'm projecting onto a Promethean board and there are dust particles inside the projector, maybe on the mirrors or something, that are being projected and making the quality very poor. I've tried spraying it out with canned air, but it just got worse. I can't take the bulb out without completely disassembling the ceiling mount!

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Posted on Jan 02, 2017

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SOURCE: Dell 2300 projects verticle stripes accross the projector screen.

this is due to improper power supply or a loose connection inside. the symptoms are of power supply unit inside projector. check out the current and amperes inside the projector on board. sometime the current stable but the ampears are down.also check the switching transistors & filters inside.......

Posted on Feb 12, 2008

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SOURCE: Mounting the Projector from the Ceiling

Projectors, in general want to project the bottom of the image 1 foot above the lens at a typical range. When mounted upside down, they project the top of the image 1 foot below the center of the lens. If you don't want to turn the projector over, you'll have to change the angle and probably go to the extreme on the keystone correction.

Posted on Aug 05, 2009

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1 Answer

Dust particles being projected onto screen with BENQ MP 525 projector


White spots on the screen are generally caused by a bad DMD chip.Multiple elements of the chip remain continuously on causing these spots.Solution is replacement of DMD chip.
Samr

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The projector projects a purple light on my Promethean Board.


Assuming you are using a DVD player your cable is correctly plug.
Your projector input is not correct try pressing your input button and wait for graphics atlest 10 seconds before pressing again. repeat sequence till you see the graphics.

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How to fix shadow (stain) projected onto screen by projector Sanyo PLC-SW30


This could be showing the signs of the lamp needing replacement. if not dust has accumulated (clean filters) onto the mirrors in the projector.

May 15, 2010 | Sanyo PLC-SW30 Multimedia Projector

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My optoma is projecting white spots onto the screen. They seem to just appear. Some have began by 'sparkling' for a while and then they stay white perminantly.


if it is a DLP projector then the DMD on the engine is likely bad or the main board is bad. The white things are pixels.

May 10, 2010 | Office Equipment & Supplies

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Im getting spots projecting on image


Check for dust on the lens. There may also be dust inside the projector on the mirrors, lenses, or LCD. If cleaning the lens on the outside doesn't resolve your problem, I would contact a professional to get the insides cleaned out.

Good Luck!

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Shadow on Flat Screen TV


Projection TV correct? This may take some work but it is common for a spec of dust to settle onto the Mirror inside the TV, The back side of the TV screen or onto the Lens from which the Video image is projected. Some TVs have ports that allow you to access the inside of the TV from the side, others you must remove the screen.

This is not something to do every day or every week and it will not improve the picture. You only do this when you notice that it is dirty. Any more than that and you yourself will create a bigger problem. ONLY LIGHTLY DUST the screen. Soaps, water and windex will leave streaks, damage the screen and cause more trouble.

Projection TVs are the eqivalent of a big flashlight showing onto a wall. Put you hand in front of the light and you get a shadow.

Inside you TV there is a light (the TV picture) that bonces of a mirror attached to the inside of the back of the TV. The light reflects off the mirror onto the back of the screen. You view this refelected image from the front. Spiders commonly make webs inside the TV that appear in the picture. Dust Bunnies may get blown into an area and become stuck in the way. Sometimes a lite tap, shake or blow may remove this also.

Dec 09, 2008 | Hitachi 50V500 50 in. HD-Ready LCD...

1 Answer

Yellowed image projection


The yellow you see is all dust on the mirrrors inside your projector.
If u are lucky you can get the mirrors cleaned by a pro, if you are unlycky as i was, the blue mirror has burn and u need to replace it.

Take your projector to someone who repaire tv:s ot other electronics, they will help you. If its only the cleaning its cheap, if you need to replace a mirror its expensive.

Good luck

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Need to disassemble Mitsubishi VS-6041 60 in Rear Projection


Wow, You are asking for a complete disasemmbly. If this is necessary, you have to remove any screws you can find that are connected to the front panel. Usually they are in the top of the set ( you'll find them after removing the mirror panel and mirror ). I wouldn't remove any tubes as the tube convergence would have to be all reset and that would require a cross hair generator. I do hope this has helped in some way, but all I can do is send you my best wishes as I certainaly don't suggest disassembly if there is any other way. Good luck
Ed
NC Electronic
Mills, Wyoming

Nov 24, 2007 | Mitsubishi VS-6041 60" Rear Projection...

1 Answer

Mirror


There is black insulating foam that surrounds the projector and it may be displaced to one side.This leaves about an 1 inch opening around the projector lens and that could be the source of the problem,dust being blown into the compartment with the mirrors.
Cleaned the mirrors really well and used double stick tape to reattach the foam to the plastic frame and this will closed off the opening that maybe letting the dust into the mirrored area of the TV.

Nov 12, 2007 | Mitsubishi WD-62327 62" Rear Projection...

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