Question about BenQ MP611C DLP Projector

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New Benq MP611P installed - no user manual

Have blurring - resolutions apparently need adjusting - no manual Plus other computers can't link up - though this is intermittent
Need manual on hand for various users to access

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  • cilla_stark Nov 19, 2008

    Thanks- NOW how do I access the manual - this is vital/urgent


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You have a problem in the alignment of lens. you should see service man to fix the problem.
if you think it's not the lens is the problem. try to go the menu option that you can see and adjust the contrast ratio or the color and brightness adjustment that might help you.

Posted on Nov 19, 2008

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My Benq projector is cutting off part of the screen image (the top and bottom)...I've tried adjusting the resolution on my computer, but nothing seems to work. Any suggestions?

when you say its cutting off the image, do you mean it is blanking the top and bottom off the picture. Is the image that is displayed on the computer the same as on the projector or is it just a cinemascope version of the computer screen

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I have the mp771 model. My set up: 2 benq mp771 and 1 mitsubishi ew223 short throw. The 1st mp771 is the left projector, the 2nd is the mitsubishi (center) and the other mp771 is the right projector all...

Swap the two MP771s over and see if the fault lies with the projector or not. If the problem image swaps over then your two projectors are behaving differently. Perhaps a factory reset might help.

I'd say that it is more likely that the problem lies with your graphics card settings rather than the projector. Projectors, in general, have a native resolution. Most of them will accept non-native resolutions and interpret them to fit, but the actual resolution of the projector can't change. Triple Heads to Go are quite tricky to setup. You should check the TH2G manual and see that the screen resolution which you are attempting to use is supported, the analog versions are quite particular.

Adjust your graphics card settings and see if that helps (This is where you will find the solution!). You need to compare possible settings with those of the TH2G and the projectors (The projectors get 1/3 if the TH2G accepts and splits the signal properly). You should be able to view the actual projector input settings to see how they compare to what you expect.
Start at the lowest 12x3 screen resolution that the TH2G will accept and see if that helps. Make sure refresh rates are set to match too.
It can be a fiddly process, however once you find the correct settings then it should all work great for you.

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2 Answers

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On screen resolution issues

Bought a new XGA projector.../

It appears from researching that the native res for the Benq is too low 800x600 so I will never get a good picture even though most of the images I install are at least 10meg originals. Also the new projector will work in a bright room the Benq will not.

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Not working on my laptop

Hi Jhem,

It definitively sounds like either a Screen resolution or a Screen Refresh rate problem. I would suggest you start at the bottom: set your Screen Resolution to something very low like 800x600 and set the Refresh rate to 60Hz - both in Windows of course - you'll probably have to do this with you regular display attached to you PC first, then connect your BenQ second. Than move your way up to the recommended spec in your BenQ User manual.


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Hi Soludo

You can log onto and easily download a user's manual.

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Please advice where do I down load the link for the user manual for the projector. I lost the user manual and I forgot the password.Regards KISHAN CHAND

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Image is blurred and dark


Have you checked ot by replacing the Lamp?Check it or check the Fly-eye lens for the same.


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I had a similar problem with my Benq 8700+. The aspect ratio would show in the R low corner on changinbg resolutions, and would close down to a single line ("anamorphic" for example) which would remain on the screen. I checked the manual (useless) and went through all the set up screens (again useless). In despiration, I decided to try to unplug the projector and did so for 30 seconds to allow the charge to drain from the circuits powering the chips in the 8700+. Upon returning power and restarting, the screen resolution appears/disappears properly once again. Give thjis a try.

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I am unable to manually adjust the image size

change the resolution first. drop it on the computer side and see if that does it.

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