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My BenQ MX720 projector *powers down by itself after a few minutes even after I cleaned it and replaced the lamp. What else could it be?

*When I say "powers down", I mean the whole power down procedure like normal. The lamp turns off, fans run to cool it down, etc. So I'm thinking it's not a power supply issue. When this first started happening, I thought it was just a clogged air filter. Come to find out, it's a "filter-free" projector, so I just used some canned air to blow out the air intakes as best I could until no more dust came out. Started it up. Same problem. So when that didn't work, I ordered a replacement lamp, thinking surely that was the issue. No dice. What else could it be?

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE:

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Posted on Jan 02, 2017

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  • 2 Answers

SOURCE: Projector shuts down after only a few minutes.

enter in Factory Menu
1. How to enter factory menu:
I. Hold press "UP" button until the "Lamp hours info." OSD display on bottom-right of screen.
Press keypad <Power> and <Blank> key simultaneously again, then enter Factory menu.
enter in fan menu and increse the speed of fans.
paul@ula.ve

Posted on Jul 02, 2008

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  • 1 Answer

SOURCE: Resetting the air filter timer

If you do not have a remote here is how to reset the filter time. Use the "Menu" bottun to get the "easy menu" to display. Push the down arrow until you get to "Filter Time," then push and hold the RIGHT arrow to reset the filter time. DO NOT try to reset using the "Reset" option on the easy menu, it will not work.

Posted on Oct 02, 2008

SOURCE: Panasonic PT-AE900U Projector Lamp stops working (intermittent)

since it has worked 1200 hours or even more since u have been resetting the counter! just change the lamp, resetting the counter does not make the lamp work or not work , it is only a reminder for the user to change the bulb when it should be & that u have some balance hours left to procure a new lamp!
if the brightness is adequate, then it is a ballast problem & not lamp problem!
buy a new lamp as u will anyway need to , fit it & it may solve ur problems permanently!

Posted on Feb 08, 2009

jyackle5
  • 8197 Answers

SOURCE: Shuts lamp dwons as if over heated. Lamp 4200 hours.

You need to reset the lamp hours. Here is the manual to tell you how to reset.

http://www.projectorcentral.com/pdf/projector_manual_2606.pdf

Good Luck and please Rate. FixYa!

Posted on Mar 12, 2009

  • 1 Answer

SOURCE: panasonic projector keeps shutting off

Try this utube link. I did it and it solved the problem in about 30 seconds! Don't spend any money or send out your unit. This does it.

http://www.youtube.com/watch?v=6jGwB05_gdk

Posted on Jun 04, 2009

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