20 Most Recent Panasonic PT-40LC12 40" Rear Projection HDTV - Page 5 Questions & Answers

Any indicator lights flashing while the TV is not turning on?

Possibly the lamp door is not installed properly.

Any warning lights showing a possible overheating situation?

Usually indicates a bad or defective bulb. If new, it was manufactured defective. If used, it is usually due to excessive heat.

The ballast used to ignite the bulb could also be weak, but usually it turns out to be the bulb.

There is a method to increase the bulb's internal fan speed to aid in additional cooling and prevent overheating, but will also allow more dust to be drawn into the TV if the air filter is not sealed tight.

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

my e-mail is <[email protected]>

You have to hold the Stop/Swap button for 7 seconds.

check 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

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.

I would first replace the lamp.

panasonic should have the part, call 1-800-833-9626 the part number is LSEP3067 and should run around 460 USD.

you may be able to pick it up cheaper through Union Electronic Distributors, they don't normally stock it but i believe they can order it for you, should run around 300 USD. their phone number is 1-800-648-6657

hope this helps,
trin

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

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

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

my e-mail is <[email protected]>

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

my e-mail is <[email protected]>

hv C4-line dvd,which reflect dvd,usb,mp3,etc
whereas in actual only give cd player ..
why it so ,seem to be faulty devise .
pls adv on [email protected]

You will have to have access code or password to change settings. Or contact set manufacturer technical service for override procedure

Check the lamp first ,it could have blown.If the lamp looks good consider the following,The power supply gives the ballast the voltage it needs to strike the lamp,its hard to tell without doing some voltage measurements,you can not measure the output of the ballast but the voltage from the power supply to the ballast yes. Call professional help if you are not familiar with safety when servicing tv's.

When the picture gets dim the lamp is failing and the lamp will pop when fails. Pull the lamp and look at it and you will find the element has blown.

are there any flashing LED's?

The only HD connections for this TV are the Component connections on the back (red, blue, and green).
You use this connection with the red and white audio cable.

Shorted red driver trans shorted red pic tube defective focus/screen block any or all of these stk's on convergence module check the solder joints on convergence module