Question about Panasonic PT-50LC13 50" Rear Projection HDTV

4 Answers

Air filter cleaning

Internal engine reports an air filter cleaning needed and to call a tech. Is there a solution that I could do. After message appears, the tv shuts itself off. Just replaced the bulb to try to solve problem, it did not help. Was told to unplug the tv for 2 hours and it should reset, does not help!

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  • pioneer_01 Jan 08, 2009

    I've removed the bulb compartment and believe i see the filter compartment, but how do u remove that? Have tried opening the rear panel, shows lots of dust, but still no access to the filter???

  • bnkelectric Apr 18, 2009

    Yep--since we all have the same user manuals--I have the PT-50LCX64. Same problem with the air filter warning. So we did--we called an supposed "expert" T.V. technician to clean the air filter. He came out actually took off the rear speakers--ran a dust cloth over them--lied to me--told me there was some kind of tube that ran air to the fan. We got walloped--$400.00--what a total rip-off.

    A week later that warning was on again--so this time we called Panasonic. What a JOKE. Talked to their supervisor--& he said he would be "honest" that they did not have the manual to clean the air filter on the PT-50LCX64--& then referred me to a download on another T.V.--the PT-52LCX15-B. I was to download that file & he was 80% certain that the air filter would be cleaned in the same manner. THE FILE WON'T DOWNLOAD.

    So I e-mailed Panasonic at
    & told them if they do not give me specific instructions on how to clean this air filter--I would never buy a Panasonic product ever again.

    It's ridiculous--the T.V technicians don't know how to clean this filter & neither does Panasonic.



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Air Filter Cleaning for Panasonic PT-43LCX64 PT-50LCX64 PT-60LCX64

OK, I purchased the service manual which explains it pretty good. However it is pretty complex with about 45 screws to be removed so if your going to attempt it buy the manual (mine cost $14.99). There are 3 filters, one at the back and two at the front. Once the procedure is completed there is nothing else to do other than switch it on. There are no timers to reset in the software like some other models. So there must either be an airflow sensor or a temperature sensor. I'll look at the service manual in more depth when I have a chance.

I do have a request for someone. The filter at the rear was pretty clean as was the one on the top part of the projector assembly. The one at the bottom of the assembly was dirty. I think that it might be possible to clean the front filters far more easily. So if anyome wants to try it here is a possible solution.

Remove the front panel (silver). Undo the 2 screws on the cover of the projector housing (not the one that gives you access to the lamp. Remove the cover. Carefully vacuum the top dark grey foam filter on the left side of the pojector unit. Next vacuum the bottom of the unit. That's were the main and dirty filter was. You can't really get to it but I'm hoping you might just get enough off to get it working. The TV senses if its clean enough so there's nothing to loose by seeing if this shortcut works. Once the error comes back I will try it myself.

Good luck

Posted on Dec 06, 2008

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Remove silver panel on front marked HDTV and BBE

Open bulb compartment

On the right side of the bulb compartment is the filter compartment

Remove filter and clean

Every 400hours it will prompt to do so. Check lamp timer if you have changed bulb and reset as instructed below

Service mode info

Enter Service Mode: With the TV powered off (make sure it's off for a few minutes before trying this, or you'll wait for the customary cooldown period before anything happens if you turn the set off and try this stuff immediately), press and hold both the "VOLUME Down" button on the TV itself and the TV/VIDEO key on the remote control simultaneously for about 7 seconds (they say over 5 seconds in the manual). The TV will be turned on and it will have a screen full of status data atop an active TV channel.

Next, press the SWAP/STOP key on the remote for more than 5 seconds.

You should be taken to a screen that has " LAMP/FILTER/IIC" as a selectable entity. Press the Action key to select it and move to the next screen of info.

You'll see a status screen with the number of Service Mode Resets of the Lamp run time (I inadvertently reset my Lamp to 0 hrs after 95 hours of initial operation, and I'll show you how to avoid that in a minute). You'll also see Total Time, which I assume is total TV run time, Lamp Run Time, and Filter Time, all in hours.

You can backchain to the the prior screens with the Recall button on remote.

To exit this service mode entirely, you must turn off the TV.

You can also enter a different service mode menu to control a number of parameters, as I first learned from Doug McDonald at this link >> when I was trying to learn how to perform service mode color adjustments.

Depress the "Volume Down" button on the set itself while concurrently depressing the "Recall" key on the remote for about seven seconds, and you'll be taken into "Work Mode". At this point, you can press the Action key, and select "Information", where you'll not only see Input mode (as usual) but also Lamp Run Time (but not Filter time or total run time).

You can enter the more advanced service mode menu by pressing and holding the Volume Down button down on the set itself while concurrently depressing the SWAP/STOP key on the remote for more than five seconds. -- This displayed a Factory Adjust menu, with bunch of settings. See Doug's message for more details. (Do not press Vol Down on the set and PIP/PLAY on remote simultaneously, or you'll reset the Lamp time to 0hrs as I did !)

Unfortunately, the service manual does not describe all the tweakable settings in the Factory Adjust menu.......

Posted on Jan 03, 2008

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    Soulvisitor Jan 05, 2008

    Nick Stam
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Could someone please me more specific about how to find and clean said filters?  Maybe provide a diagram?

Posted on Jan 10, 2008

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What is the part number for the air filter on the panasonic PT-60LCX64 so I can try to purchase it. I can not find it anywhere....

Posted on Jun 26, 2009

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I just had a T.V. tech do this. The filters are located on the two removable filters on the back side of the T.V. They look like the speaker units. He removed those two units, unplugged them & set them on the floor. He took some type of electronic cleaner with a cloth & wiped them down. The filters themselves are plastic. He explained that air flows through some tube connected to these plastic filters for cooling down below. He admitted they didn't look dirty--put everything back together & it is working fine now.

I imagine that dirty or not the timer is automatically set for every 400 hrs. of use to give you the prompt that the filter needs cleaning & will shut off in one minute so you can call a T.V. tech?

So to reset the timer--follow the other detailed prompts listed on this board & or use your owners manual & follow the prompts for replacing the bulb. That should take you somewhere to reset the timer--so you have another 400 hours of operation.

I believe it's with the T.V. turned off--hold down the down volume on your tv itself while holding the swap button on the remote control for 5-7 seconds---then follow the prompts. You should see a prompt for replacing a bulb & then one for filter cleaning. Then just reset the timer.

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Call the factory for an authorized servicer near you, your TV guy doesn't understand Panasonic...

If the lamp thermal sensor is active, the fans just keep running because it thinks the thing is hot (to save an expensive part from exploding). It does not give any error message.

Fan 1 is used for air filter detection. (It's essentially the same run-sensor type fan used in their stereos.) Fan 1 plug P2902 at the right side of the light engine board may not be making good contact or the fan is not running. The micro must get the proper feedback signal from that fan to keep it happy.

Good luck, Mark

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Where is the air filter on my Panasonic PT50LCX64 TV and how can I clean it?

I have the same problem!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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