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Uf55 projector shows black and white pixels - Smartboard Smart Board UF55 Projector Lamp

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Projector runs for 5 minutes then overheats and shuts off it is a wll-miount model not one that hangs from the ceiling UF55


it seems that the lamp is not good

the ballast is good,I think

Have a nice day!
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Jan 13, 2014 | Smartboard Smart Board UF55 Projector Lamp

1 Answer

Suddenly, benq mx511 has white pixels showing up....multiplying every day...now the projected image consists of 50% snow.


It probably has the same DLP chip as my Mitsubishi television. The mirrors in the chip set get stuck and create the white spots. There is no way to fix this other than replacing the DLP chip.

Feb 04, 2013 | BenQ MX511 3D Projector

1 Answer

My Acer Projector shows white and black spots. I am almost unable to see anything anymore. I read that changing the lamp in similar issue does not help. The dead pixels are multipling. Any easy solution? I...


if not the lamp then definately got dust issues. usually dust makes picture go red shade.

if you have this issue then probably need new projector, if this being the case a little brute force to try and open may sound sensibly option. worth a go

I now buy hitachi with 3 year bulb warrenty for our school as cheaper in long run.

Jan 29, 2013 | Acer X1130P 3D Ready DLP Projector...

1 Answer

Hi, I have a projector Optoma EP7155 and it appear white and black spot like dead pixel, I would like to know where I can buy a DMD chip with the CCD and how much it will cost. Thank you


global projectors is one source. You need to find out from Optoma the chip you need or take apart the machine and look at it. From China they run about 200 bucks. I've only done Mitsubishi so far.

Dec 16, 2012 | Optoma EP7155 DLP Projector

1 Answer

I have nec np200 and there's a lot of dots appeared on the screen. what seems to be a problem


I have 2 NP-200 projectors installed in a school which show white dots on a black background and black dots on a white background. This is caused by the DMD chip losing pixels. Only solution is to replace the chip, I'm researching now if that i an economical solution.

Oct 25, 2012 | NEC NP200 Projector

3 Answers

How do you clean the dust out of the projector, there are particles that look like small white stars on the black areas and black stars on the white areas. Is this dust?


If you focus the image on a screen up close to the projector and notice small rectangular black and white spots, then you have pixel failures.

Jul 11, 2011 | Optoma TX542 Projector

2 Answers

My InFocus IN2102EP projector is recently projecting a small white spot. If it was a PC, I'd say that a pixel was out. I've try blowing compressed air in various places, and have removed and replaced the...


Sounds like the DMD chip is on it's way out.
Check if the intermittent problem is related to the external air temperature. Try blowing cold air around the unit with a personal fan to see if it does the same thing.
Check if the air vents and filter is clean

Apr 12, 2011 | InFocus IN2102EP Projector

1 Answer

Hi , 2 weeks ago i noticed some dead pixels showing up on my screen (white dots) since then i'm up to 10 dead pixels. What can i do? I heard it might be the dlp projector that has to be replaced...


White pixels are STUCK pixels, not dead. Read the warranty beacuse at a certain number of stuck/dead pixels, the tv is repaired for free by the seller if is in warranty period.

Nov 02, 2010 | Samsung HL-S5686W 56" HDTV

1 Answer

Dell 2300mp projector


Did you ever get a solution to this? I am having the same problem with my 3200MP The machin will come up but only show a dim white box on the screen. I've purchased another bulb and that was not the problem. Angie Black ablack@4are.com

Feb 27, 2007 | Dell 3200MP Multimedia Projector

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