Question about BenQ MX511 3D Projector

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

It started slowly at the top of the image and worked its way in massive dead pixel quantities over the next month, rendering the ability to watch anything impossible...the projector bulb only has 1600 hours on it. I am really upset!

Posted by jack peterson on


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Kelly Mitchell

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  • 13 Answers

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.

Posted on Feb 04, 2013


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  • 3 Answers

SOURCE: I cannot ger the projector to project the image on the laptop. I have held down the Fn Key and F8 to no avail

possible bent pins on the cable.
possible video card death in the computer.

but, most likely one of two things can remedy your problem : 
- 1 - try to reselect the source on your projector, so that it is detecting the port where your computer is plugged in. if that fails to solve the problem.........
- 2 - right-click on the desktop, and select "properties". then select "displays", then try the "advanced" tab, and mess around in there. can't tell for sure what options you will be facing at this point, since i don't know what graphics card is in your computer, nor do i know how that card is interfacing with your computer.

good luck, and i hope i was able to give you some help!!!!
(funny thing is, i was on here trying to solve a projector issue i am having, and saw your question pop up on the screen, and figured i might be able to help).

Posted on Jan 16, 2009



  • 3 Answers

SOURCE: BenQ PB 6100 .. blue hue on everything !

Most likely (90% sure) you need a new Main Board.

This Board is for sale on Ebay...

Posted on Jan 23, 2009



  • 2239 Answers

SOURCE: Flickering dots on Benq PB6200 projector.

it's not the lamp. if you've replaced the cords and still have the problem, reset the settings to factory default to make sure the resolution matches. if still not ok, there may be an issue with the main board.

Posted on Nov 12, 2009



  • 2239 Answers

SOURCE: I am having issues with my BenQ PE7700 projector.

if the cables are new, reset the settings to factory default to make sure the resolution matches. if there ia still an issue, replace the main board.

Posted on Nov 12, 2009


Charles Huckeba

  • 1114 Answers

SOURCE: Our church's BenQ projector (PB6240XGA) as of

Here are some troubleshooting steps that may correct the issue you are experiencing with your projector. I have included the link that will take you to the owners manual as well.


Try these solutions:

• Select the correct video system.

• Adjust brightness, contrast, or saturation.


Try these solutions:

• Press Auto on the control panel of the projector or the remote control unit to get better

picture quality.

• Adjust the focus.

• Reposition the unit to improve its projection angle.

• Ensure the distance between the unit and screen is within the adjustment range of the

Posted on Mar 07, 2011

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