20 Most Recent Panasonic PT-40LC12 40" Rear Projection HDTV - Page 6 Questions & Answers

you can buy a generic fuse which is what those are.

Panasonic... | Answered on Jan 31, 2008

Found that the thermistor/temp measuring device is suspect, no resistance across legs. There is a label there that says F701 see service manual
I went here for a tech manual for the Panasonic
then ordered
Manufacturer: Panasonic
Part Description: FUSE
Part Number: LSJA0411-1
it was mounted to the case that holds the lamp. had to remove the back panel, etc. Also think I had to splice in the fuse or something. was a while ago.

i purchased a NTE8115 from my electronics supplier, closest I could find.
Radio shack also has them.

remove the back cover and measure for continuity across the thermal fuse
above the lamp housing.
if open jump it wth a 5 amp fuse, be sure to close the safety switch with
the small blue lever then try to power on.
If comes on ok you will need to replace the entire ballast assembly to get
that fuse.
Panasonic does not have a part number for just the fuse on the PT40LC
It is possible to cut off the fuse and replace with another but dont solder

Panasonic... | Answered on Jan 28, 2008

disconnect the power cord overnight try it if ok change power cord cheers

Panasonic... | Answered on Jan 19, 2008

disconnect the power cord overnight try it if ok change power cord cheers

Panasonic... | Answered on Jan 16, 2008

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.

Comment by Soulvisitor, posted on Jan 03, 2008 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 >>
http://www.avsforum.com/avs-vb/show...hlight=pt40lc12 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.......

Nick Stam
PC Mag and ExtremeTech

Panasonic... | Answered on Jan 03, 2008

replace with a new aire filter or clean the air filter

Panasonic... | Answered on Dec 30, 2007

i'm sory sure why did you change the lamp? mybe the lamp was non put in straight and the door safty switch was not right. need more info. WHAT WAS THE SIMPTOM BEFORE YOU CHANGED THE (HOPEFULLY DLP TV YOU ARE WORKING ON)

Panasonic... | Answered on Nov 23, 2007

Having had to change the lamp I would suspect the lamp thermal fuse is open... It's located over the duct for the fan housing and solders into the ballast board.. Check it for continuity and if open replace it..
There are several thermal fuses in that unit and not all of them as easy to access as the lamp one.
Good Luck

Panasonic... | Answered on Nov 18, 2007

Do a continuity check on the thermal fuse coming off of connector P1701-P1707, I believe. If it's open, replace it. It's housed right above the lamp on the light engine.

Panasonic... | Answered on Nov 17, 2007

i purchased a NTE8115 from my electronics supplier, closest I could find.  Radio shack also has them.

Panasonic... | Answered on Oct 30, 2007

Turn the TV "ON"  and at the same time press and hold for 5 seconds "VOLUME DOWN" button on the TV and "PP" button on the REMOTE CONTROL.

Panasonic... | Answered on Oct 25, 2007

Wild4art Did the service center replace these ballast and the set worked for you for awhile?? Or did they say that they replaced the ballast transformers and now the set needs adD.. If its the later yes it sounds like someone misdiagnoised the set ordered the expensive transformer and now are sticking them to you even though you MAY(?) not need them. Its a hard call without seeing the set. How old is this set? if its not to old I would contact panasonic and tell them what this service center is saying and have them investigate as panasonic is very strict with there servicers. Try the # I posted or look in your owners manual for the service department.. Good Luck 800-211-PANA

Panasonic... | Answered on May 31, 2006

1. Open internal fuse
2. Power supply failure

Panasonic... | Answered on Jan 17, 2021

Applicable code(s) would be stored in the remote control, if it is compatible.

Panasonic... | Answered on Jan 16, 2021

Hello, the codes for Panasonic DVD are; 2031,2066,2075,2076,2104,2105,2106,2111,2151,2153,2154

Panasonic... | Answered on Jan 16, 2021

Have you done a channel scan? This can take a few minutes but it locates and lists all channels If you've not done this already, go into your menu, channels and be sure to enter the receiving input whether it's antenna,cable, or satellite, start your scan and see what channels you're receiving. I sure hope this helps and good luck

Panasonic... | Answered on Jan 06, 2021

Applicable code(s) would be found in a compatible remote control.

Panasonic... | Answered on Jan 03, 2021

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