Question about Panasonic PT-40LC12 40" Rear Projection HDTV

2 Answers

PT-40LC12 fuse problem

Since I can't find the thermal fuse ( L3 250V, 5A, 115C) for my Panasonic PT-40LC12, can I replace it with a differnet thermal fuse which has this spec 250V 10A 117C ?  Please help

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  • Anonymous May 24, 2008

    same problem

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I went here for a tech manual for the Panasonic tv.
http://www.ManualsParadise.com
then ordered
Manufacturer: Panasonic
Part Description: FUSE
Part Number: LSJA0411-1
from PartStore.com
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.

mine is broken again. this is getting old between lamps and repairs.

Posted on Nov 22, 2007

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Sent me the serial number, and I can check for any re-call ...

my e-mail is <ultraman_s@yahoo.com>

Posted on May 22, 2008

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1 Answer

When I turn the power on all I get is a blinking green power light and nothing else. The lamp is new.


Have you checked the thermal Fuse that is located right above Lamp? These sets had problems
with Thermal Fuse. Is all of the Fans working ? Lamp Fan?
Ballast board is what powers Lamp on. You need to also check 2 thermistors,they are known to be bad.
R2901 (180K-800K)
R2911 (40K-130K)

Jan 13, 2011 | Panasonic PT-40LC12 40" Rear Projection...

1 Answer

I just replaced the lamp on my Panasonic PT-40LC12 TV. How do I reset the timer and make the red light go off?


what you need to do is have your remote handy and go up to the tv. Hold volume down the tv and pip on the remote for 5 seconds.

Dec 08, 2009 | Panasonic PT-40LC12 40 in. LCD Television

3 Answers

Ballast problem on PT-40LC12


Sent me the serial number, and I can check for any re-call ...

my e-mail is <ultraman_s@yahoo.com>

Feb 01, 2008 | Panasonic PT-40LC12 40" Rear Projection...

2 Answers

Brief picture for 30 seconds, then lamp button blinks


Found that the thermistor/temp measuring device is suspect, no resistance across legs. There is a label there that says F701 see service manual
http://www.goodmans.net/get_item_th-tf117c_thermal-fuse-117-degrees-celsius.htm
I went here for a tech manual for the Panasonic
tv.
http://www.ManualsParadise.com
then ordered
Manufacturer: Panasonic
Part Description: FUSE
Part Number: LSJA0411-1
from
PartStore.com
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
series.
It is possible to cut off the fuse and replace with another but dont solder

Dec 22, 2007 | Panasonic PT-40LC12 40" Rear Projection...

2 Answers

No picture Panasonic PT-40LC12 40


Found that the thermistor/temp measuring device is suspect, no resistance across legs. There is a label there that says F701 see service manual
http://www.goodmans.net/get_item_th-tf117c_thermal-fuse-117-degrees-celsius.htm
I went here for a tech manual for the Panasonic
tv.
http://www.ManualsParadise.com
then ordered
Manufacturer: Panasonic
Part Description: FUSE
Part Number: LSJA0411-1
from
PartStore.com
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
series.
It is possible to cut off the fuse and replace with another but dont solder

Dec 13, 2007 | Panasonic PT-40LC12 40" Rear Projection...

1 Answer

Respond doc


Vulb,
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
Bill

Nov 17, 2007 | Panasonic PT-40LC12 40" Rear Projection...

3 Answers

Panasonic pt-40lc12


Found that the thermistor/temp measuring device is suspect, no resistance across legs. There is a label there that says F701 see service manual
http://www.goodmans.net/get_item_th-tf117c_thermal-fuse-117-degrees-celsius.htm
I went here for a tech manual for the Panasonic
tv.
http://www.ManualsParadise.com
then ordered
Manufacturer: Panasonic
Part Description: FUSE
Part Number: LSJA0411-1
from
PartStore.com
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
series.
It is possible to cut off the fuse and replace with another but dont solder

Nov 15, 2007 | Panasonic PT-40LC12 40" Rear Projection...

1 Answer

Thermal fuse


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

Sep 25, 2007 | Panasonic PT-40LC12 40" Rear Projection...

4 Answers

Panasonic PT40LC12 - Blinking green power light - no lamp fire up.


Had similar issue but had high resistance across leads. replaced with thermal fuse from RadioShack in the similar temp and everything works great. Info on the original part is on this link. http://www.willas-array.com/prod/products/directory/pdf/sefuse/FUSE_SMG.PDF Hope that helps. Chris

Apr 15, 2007 | Panasonic PT-40LC12 40" Rear Projection...

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