Question about Sony Grand WEGA KF50WE610 50" Rear Projection HDTV-Ready Television

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Changing thermal fuse and lamp

Hi,

We're fairly mechanical. Is changing the thermal fuse and the lamp something we could do?

Thanks!

Tammi

Posted by on

  • tamarahull Jun 23, 2008

    Since posting my question, I did some more googling and learned that our problem may be the lamp bulb (it was the original) and the lamp board. We've ordered replacements and are keeping our fingers crossed that they will bring our big behemoth tv back to life.

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I would not recomend you changing the fuse even though it sounds simple. the new one is modified and has to be rerouted, for saftey factors if not installed properly the tv could get hot and melt things or worse. the lamp is designed for customers to change so go ahead if you need to chang the lamp only.

Posted on Jun 22, 2008

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Posted on Jan 02, 2017

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Sony tv model kds-60a2000


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Hi,

3 blinks is the lamp door error code. Try jumpering the door switch. These switches are notorious for going bad.

OR

The blink code means that something on the board is over current/over voltage. It could be an overload of the +5 line (A/B boards) or the +5 line is shorted.

The TV needs to be opened up and the boards checked. You may be lucky and only need a thermal fuse. Also check your bulb.

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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 tv1.gif.
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 shack1.gif 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
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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
must be crimped.

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