Question about Panasonic PT-AE900U Multimedia Projector

3 Answers

Annoying projector noise

I have long suffered with the constant and annoying growling noise from the projectors (or their cooling fans) in this unit.  It is similar to the noise from the compressor in a large refrigerator.  Is there a replacement part that can make this unit less noisy?   

unit is making a grinding noise

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  • 5 more comments 
  • drhockey Dec 26, 2007

    unit was very quiet when new but lately started with a loud grinding rumble.

  • Skunki Mar 21, 2008

    Turning off the dynamic Iris did help me, too. The noise got away by 90 %. Some is still there.

  • Anonymous Oct 02, 2008

    Mine makes a LOUD noise that is completely annoying. It sounds like the fan

  • Anonymous Nov 10, 2008

    When turned on my projector makes a loud noise, which appears to be the fan. It sounds as though the fan blade is eitehr loose or needs to be lubricated.

  • chaslau Jan 27, 2009

    I have a rumbling growl, and cleaning the filter does not help. It sounds like the fan blade might be loose. How does one turn off the dynamic iris?

  • whatthefunk Mar 04, 2009

    There is a solution for the noisey iris posted at avsforum

    Having opened up the projector, now my problem is that I don't know how to remove the APC board block (as per 6.10 / 6.3 of the service manual) because I don't know how to disconect all the cables attached to it. Looking for some advice to help me with this step...

    Here is the service manual for anyone that needs it:

  • mbinbr May 11, 2010

    Same problem here. Does not appear to be the fans making the noise.



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Well here is a partial solution. Turn off Dynamic Iris and the noise will go away. Now could someone tell me how to fix the Dynamic Iris?

Posted on Jan 26, 2008

  • mbinbr Oct 26, 2008

    Turning off Auto Iris helps but it can
    still make noise. Disabling the mechanism by unplugging it will
    eliminate the noise and the Iris should open fully when unplugged.
    So this is a fix for the noise, not the Iris. Remove the Shift Lever
    that adjust the lens direction (unscrew and pull). Remove the
    filter on the right side. Remove six screws marked with arrow on
    the bottom. Remove one screw marked with arrow on the rear. Remove
    the top cover. On the front side of the main board locate the third
    connector from the left with eight blue wires and one white.
    Disconnect this connector. Reassemble projector.


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I was prepared to disassemble the unit and unplug the iris, but cleaning the filter solved it for me. When you change the projector mode in the menu it automatically turns the auto iris back on.

Posted on Nov 07, 2009


Try cleaning or replacing the filter.  That was the source of noise in mine, although I thought it was the fan.
Completely quiet now.

Posted on Jan 12, 2008

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To open this projector, you need to undo six screws at the underside of the case. That means you have to turn the projector upsidedown.
Pls note that one of these scews is a little hidden under the carrying handle.
After removing the screws, return the projector to it's normal 'up-side' up, standing position.
Remove the bulb cover srews and remove the bulb cover.
Lift up the top cover carefully starting from the front then all together.
The cooling fan is mounted very near the bulb assembly.
Carefully check the fan blades for any obtacles, wires or even a broken fan blade, that could be causing the noise.
Baba Anji.

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