Question about Panasonic PT-AX100U-EC DLP Projector
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.
Posted on Jan 04, 2009
Thanks everyone for this helpful problem/solution thread. Especially thanks to shrike for the detailed textual explanation and thanks to pgram for the youtube suggestion (I'm a visual person, so that helped a lot)). After having this problem (start project with the remote or front panel, it would turn itself off after a few minutes, turn the main I/O power switch off and then back on, turn on the projector again and then repeat and repeat and repeat as necessary) for about 11+ months now (starting at about only 500 projector hours), I finally decided to search the net for a do-it-yourself solution. Between this thread, one other and the youtube video, it was more than enough to easily solve my problem. I simply unplugged/unhooked my projector, placed it upside down on a towel, unscrewed the two screws holding in the light bulb panel cover and removed the cover. Right there, easy to get to, is the brown iris lever assembly. I first tested the iris lever by rotating it and releasing. My lever returned to its original position so extremely slowly! As advised, I used a Q-Tip and 3-in-1 oil. I soaked the Q-Tip and tried to coat as many moving parts as I could. Wa-La, my iris lever now springs back instantly. I never had to lube the upper pivot shaft that shrike mentioned, only the easy to get to lower one. I put the cover back on, hooked the projector back up and, sure enough, it works first time, every time. I also used to have this problem that when my house HVAC cycled on, my projector would turn off! This problem is solved as well.
Here is the youtube video link. Please note that his iris moves perfectly fine even before he applies the lubricant (yours will be much slower if you have the iris problem) and I also recommend lubricating a lot more of the moving parts than just the pivot arm he lubes.
Again, thanks everyone. This saves me the $300 repair price I was quoted (mad! >:-[ ) or the $1,000 it would cost for a new PT-AX200U.
P.S. When I first contacted projectorpeople (many months ago) about my problem, I was told that Panasonic was aware of the iris problem and had extended their warranty for this reason. I called Panasonic to make arrangements and was told they had just withdrew the extended warranty two weeks prior. :o(
Posted on Sep 21, 2009
I have the PT AX 100U with 964 original hours. After reading the above threads, it was clear that I had the sticking iris problem. I watched ptatohed's video under solution 3 above and decided, after I called Heartland to check on the repair price ($180 cash and carry), to try this first. I wanted to also lubricate the top iris pivot as well, but I did not want to remove the entire top cover and other thing to get to the to pivot.
It turns out that if you remove the lamp assembly, (follow the lamp replacement instructions), and place the projector on its front, you can see the top iris pivot. (The bottom pivot is easily seen with the lamp in place.) I used a 2/0 artist brush and bent the ferule into a corkscrew shape. I also tried a "U" shaped brush but the mild cork screw shape seemed to work better. It could easily place a very small amount of 3 in 1 oil on the top pivot. if you can play the game "Operation" you can place the oil on the top pivot without getting any oil on anything else.
I repeated this process 3 times for the top and bottom pivot arms waiting about 5 minutes between applications. I worked the arms back and forth with a q tip to let the oil move down the shafts. After about 15 minutes the sluggish rotation became free and quick. I replaced it in its ceiling nest and so far works like new. None of the power down problems that it had been having.
It will be interesting to see how long it lasts. This is a little bit disappointing as the product was obviously under enginered, but right now the price is right for this repair, (free and took about 30 minutes).
Good luck all and thanks for the help!!
Posted on Jan 26, 2010
I replaced the iris. I used the replacement part from partstore.com. The Panasonic part # is TXZEN01VKD3, replaced by TENC0169. http://www.partstore.com/PartSearch....01VKD3&x=0&y=0
It took me about 3 hours, taking detailed pictures along the way. I have since gone in there again and it takes me about 35 minutes now that I know what I am doing. I have pictures, but no detailed instructions. It's pretty hairy and I have experience repairing some stuff, but not a professional. I wore a static wrist strap as well.
Posted on Jan 19, 2010
Go to youtube.com. There is an easy do it yourself fix for this. 5 minutes, 1 q-tip. Really.
Posted on Apr 06, 2009
I used WD-40 with a Q-Tip to clean it/unstick it and then put a few drops of 3-in-1 on with a eyeglass screwdriver and everything is fine again here also. It took less than 30 minutes including taking it down from the ceiling mount and putting it back up. I don't know how long the new lubicrant will last, but it's been several weeks so far without issue and it's not much bother to lube it up again as long as it's not too short a length of time. I still have dimming issues with the bulb in both eco and normal modes, though. I'm hoping a new bulb will solve that, but given it's so common I could easily get another bad one (maybe it's something internal as well?)
Posted on Apr 07, 2009
I have the ultimate problem solution to this problem. With the Panasonic Projector. Please call Port City Audio & Video via Jordan Thomas @ 910 538 2754. or e mail @ firstname.lastname@example.org I own a custom A/V business in the eastern NC area. Thanks
- Jordan Port City A/V
Posted on Dec 07, 2009
The problem sounds like the "stuck iris" issue that has plagued this particular model. I found out about it when I received the AX100u as a loaner for my AX200U that is in for service. The loaner worked fine the first day but when I went to turn it on the next day it would shut itself off for a few minutes. I pulled my wiring apart until I researched it on the web. Here is a link that sheds light on the problem. What happens is the unit fails a power up self test when the iris can't open fully and shuts itself down. It seems the unit has to be sent in to have the iris replaced.
Hope this helps!
Posted on Dec 04, 2008
Hi.. call panasonic.. this is a well known problem with this model. it has to do with the iris getting stuck. so, they have extended the warranty for this particular problem to 18 months, Bottom line is, send it in, it will be sent back to you the following week all fixed... we just did it, and are so relieved!
Posted on Nov 28, 2008
I just finished dealing with this issue, and I have to say it was a fairly easy process. The absolute worst part was taking off and replacing the top cover. I first tried lubricating the lower iris cam, but had to remove the cover to lubricate the top cam. To be honest after I removed the cover I used a screw driver to move the top cam around a bit, I then plugged in the unit and fired it up. The iris seemed to pop right back in to place and the unit started working like new again. I lubricated the cam, and then replaced the top cover which was a bit of a headache. I returned the unit back to it resting place in my home theater and the picture looks better than ever. The best part is saving $200 - $300 on sending it in for a fairly simple repair.
Posted on Mar 23, 2010
Posted on Jul 19, 2008
Call Panasonic and send you projector to a repair center, the problem is the iris and should be replaced
Posted on Nov 28, 2008
Tips for a great answer:
If the lamp usage time has passed 2 000 hours (when LAMP POWER has been set to NORMAL), the projector will switch to standby mode after approximately 10 minutes of operation. The resetting procedure should thus be completed within 10 minutes.
1. Insert the power cord plug into the wall outlet and then
press the MAIN POWER switch.
2. Press the POWER button so that a picture is projected onto
3. Press the MENU button to display the menu screen, and
then press the F or G button to select the OPTION menu.
4. Press the ENTER button, and then press the F or G button
to select LAMP RUNTIME.
5. Press and hold the ENTER button for approximately
3 seconds. The confirmation screen, "LAMP RUNTIME
RESET." is displayed and select OK.
6. Turn off the power.
This will reset the cumulative usage time for the lamp
unit to zero.
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