Question about Panasonic PT-AX100U-EC DLP Projector

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My panasonic PT-AX100U keeps turning off after 3 minutes or so and i haft to keep power cycling it i read up on the iris problem and was wondering where that is located on the unit so i can grease it myself

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  • Jakobsen Dec 31, 2008

    Same problem, as last guy, Over the last week my panasonic PT-AU100U keeps turning itself off after about 2 minutes of use, I then have to climb up to the unit and flip the on off power switch on the back and then I can use the remote to turn back on. If i do that it stays on. but each time i turn it on I have to go through the same ritual of powering down and back up again. please help...

  • levijsmith Jan 24, 2009

    I'm having the same problem. Just started within the past month.

  • Anonymous Mar 28, 2009

    This is an Iris issue.

  • Anonymous Apr 05, 2009

    It started off doing it just once or twice but over time it has been getting worse and at this time It will not stay on for nothing.

  • curt1234 Apr 11, 2009

    I have the same problem, even after the supposed iris fix. When I got my projector back from the servicing of the iris it has a blue smudge in the right corner, I suspect they got a piece of dust on the lamp when they "fixed" it. Needless to say I know ahead of time I have to let it shutdown once then wait for it to cool off then start it up again when I am going to use it, I have about 600 hours on the projector and have two mac camera warranties, one for the bulb and one for the projector. I have an 80" screen and frankly I am milking this out until it dies, then I will just get a Sammy LCD DLP Front Projector, hopefully by then they will have a 72" inch with LED Lighting for under 2 grand. This was my first and last projector, not worth the hassle and I am not throwing that much bigger of a picture at 80" versus 72"

    If you havent had it serviced for the iris recall, its probably too late but you can call Panasonic and bith them out, they really tried to sweep this under the rug, for an otherwise great projector with tons of lumens and good picture at 720p, they really f"ed up with this iris burning up. I hardly used this thing and it was always on eco mode cinema 2!

  • Anonymous Apr 29, 2009

    I have the same problem. Started out after initial lamp replacement. Begin shutting down after 2 or 3 minutes now I have to recyle 4 or 5 times. very very frustrating

  • mhickman4 Apr 29, 2009

    Mine began after changing out the bulb... Initially had to turn off once and allow to cool now it takes four or 5 times...what a pain



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Posted on May 01, 2009


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I just repaired mine with some oil for the iris assembly.
The problem is the iris is either slow to respond or doesn't respond to it's controller. The cam should snap back to it's resting point and move freely. It needs to be re-oiled. Mine would move but sluggishly like it was sticky. There are TWO pivot shafts to oil. One on top and one on the bottom. The bottom one can be accessed by removing the bulb. You can see the bottom cam while the bulb is installed. This is a good point to test the iris movement at.
You need to have some mechanical ability. If you don't think you can do this then don't.
First remove the bottom bulb cover. Now get a flashlight. Look in the area that bulb is pointing towards. In the left corner of the side towards the front of the unit where the lens is, you will see a brownish cam. It has a spring around it.
Take a small screwdriver and move it to it's extent like a wheel. Let go and it should quickly return to where it was. It virtually snaps back to it's resting point. Do this several times. 5-6 If at any time it returns sluggishly then it needs to be oiled. 3 in 1 oil works great.
This takes time. I used a small jewelers screw driver to deliver the oil. As you oil it move the cam back and forth to work the oil to the shaft. Standing the unit on edge after you put the oil in the gap helps the oil get to the shaft.
If it now starts to snap back put the bulb cover back on and try the unit. If after 5-6 movements it still does not snap back each time then the actual motor shaft needs to be oiled as well.

Take the top off. There are several screws and one on the back. All have an arrow marking them. The cover is caught around the lens assembly. You have to be a little bit violent to get it off. After the cover is removed, you have to really look for the upper iris cam. It is under the large multi pin connector with brown wires on the main main display board. There is a small perforated metal cover under this connector.
After bending the cover up you will see the linear motor that drives the iris. There is a small flex cable going to it. You need to oil it's shaft. Use the same procedure to oil it as the cam under the unit. After oiling this shaft the iris should now snap back to rest every time. That's it.

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Well need to know about how many hours the set has run, becuse it might simply be the lamp, the other problem or problems could be if a fan is stoping or the color wheel is stoping this will shut the set down, so fire it up and listen to it for any diferant sounds

Feb 06, 2008 | Televison & Video

1 Answer

Help me!!!!

Hello folks! I bought my unit on 11/2006. After 1532 lamp hours on eco-mode, my unit would start shutting off after just 2-3 minutes. Same problems you guys are having. Based on the comments I've received from the TECH guy where I purchased the unit, it appears that these units have IRIS problems. Here's how you can tell if its an IRIS problem...according to the TECH guy:

1. Get the unit powered up as usual.
2. Wait until its projecting enough light to see a menu on the screen.
3. Using the remote control, PRESS the "POWER" button again to see the power off confirmation screen, then PRESS the ARROW keys in the following order: RIGHT, UP, DOWN, UP, DOWN, then PRESS ENTER.
4. The EXT OPTION menu should then be displayed.
5. SELECT the "SELF CHECK" option using the arrow keys.
6. Look for the word "IRIS. If that word or any word on that line appears in "RED" color, then the IRIS is faulty and needs to be replaced.
I just called Panasonic's Service dept. and they gave me a CASE NUMBER and asked me to FAX my original INVOICE to them. She told me they are going to review my claim and see if they can provide assistance or whatever. Apparently...Panasonic knows of this problem according to the TECH guy at the place where I bought my unit in late 2006. Good luck! Steve 717-891-2062

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