Question about BenQ PB7220 XGA DLP Projector Multimedia Projector

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DLP projector BenQ MP710p

Hi ; My DLP projector is throwing the light unevenly on the screen...if I shake the projector the uneven pattern changes form, usually is a rainbowish line that cuts the corner of the screen.... ....the lamp has only 700 hours and is still bright....any sugestions would be great...I'm going to try and open it and air blow the dust out...that seems to fix most peoples issues....not to mention my last place was rather dusty..

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Re: DLP projector BenQ MP710p

This is true, Projector prices have come down lately. LCD might not be a bad way to go. They have made remarkable improvements in respect to the blacks. And compared to DLPS they have one less moving part. Also some places are offering an extended warranty including 1 lamp replacement, So, check around and see what you can find. Good luck on shopping. Have a great day. Talk to you later.

Posted on Jan 31, 2008

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Re: DLP projector BenQ MP710p

Actually you can turn the projector on and then tilt it in all directions and see if picture shadowing changes. I have experience with this issue on DLP TV'S. IT sounds like a light tunnel problem if you can see partial picture behind shadow. It is fixable but very tedious. But can be done. Do you have a picture of the problem that you could send over? Thanks Jay

Posted on Jan 31, 2008

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I have a Benq w710st DLP projector and when i turn the power on after a minute it turns off. The power button turns off and both the lamp and temp lights turn red. How do I fix this and can I do it my

New bulb is probalbly needed. You need to find out what zero means on that projector. The real problem is finding out why the cooling fan is not turning on. This is probably the reason that the temp light is coming on.

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Hope this helps.

Mar 17, 2011 | BenQ MP510 DLP Projector

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Hi there. I've got a benq mp721 which i've just changed the lamp on. the problem is: how do i reset the lamp timer?

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Jan 20, 2011 | BenQ MP721 DLP Projector

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Hi there my benq dlp projector is showing white spots on the screen when the screen is black can you help me?

This is caused by dust on the lens assembly. If you can remove the lens, clean the surfaces with a lens cloth. That should resolve the problem. It is possible that the there is dust in the optical pathway inside the unit as well. If the cleaning of the lens does not resolve the problem, the unit should be brought in for a professional cleaning. It is not suggested that anyone open up these units as there are fine adjustments that can be changed internally easily that could result in convergence problems.


Jan 29, 2010 | BenQ PB6100 Multimedia Projector

1 Answer

Uncentered image using projector

reset the settings to factory default. is it cut off evenly, or is it uneven and shadowed? if it is the latter and you have a dlp projector, you have a collapsed light tunnel. if it is cut off evenly, go into the settings and make sure the resolution and screen size matches.

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1 Answer

Uneven red color from left to right in the

you have a fried light filter on one of the lcd panels, due to excessive dust and heat. you will need to replace the entire optical engine, as epson does not sell individual pieces of it.

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1 Answer

I have two different digital projectors that have been used for a long time. Now, even with new bulbs, we are noticing areas of mysterious blue beginning to show up unevenly across our image screens....

if they are lcd projectors (as opposed to dlp), the blue light filter (polarizer) is starting to fry due to excessive heat and dust. clean the projectors out thoroughly with canned air and see if it helps. if it does not, you will need to have the blue light filter replaced. unfortunately, most projector companies don't replace individual parts of the optical engine, but the whole engine itself.

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