42" Panasonic plasma TV model: TH-42PX60U dead

S

Sidney

Guest
42" Panasonic plasma TV model: TH-42PX60U, year: Nov 2006, no power,
no blinking or standby LED lights. The TV was on while this happened.
Upon troubleshooting I discovered F401=8 amp ceramic time lag fuse to
be open. From extensive googling after no obvious shorts in power
supply using Fluke DMM model 29 series II. I found the following
common repair tips:

Q406=N-ch MOSFET # RJK5020=Panasonic # B1DEKQ000003=shorted
R410=10 ohm, 5w ceramic thermal cut off=Panasonic # D1F5100E0003=open
F401 & F402=8 amp ceramic time lag fuse= Panasonic # K5D802BNA005= one
or the other open

well on this TV none of the above parts are defective except F401.
According to a Panasonic service bulletin for a similar model:

http://www.tvrepairtips.org/files/tip/286/tt-08-27.pdf

they say to add a C426=ECQB1H103JZ but on that bulletin it's if Q406
is shorted but not on mine and the board on the service bulletin is
somewhat different than mine. I haven't yet replaced F401 or placed a
100 watt light bulb in place. But would like some tips before I
proceed. Thanks.

SidneyŽ ™
Dartmouth, Nova Scotia
Canada

http://web.archive.org/web/20040312120415/www.herald.ns.ca/cgi-bin/home/displayphoto?2002/12/22+126.raw+1019+Business+

http://web.archive.org/web/20040229023255/http://www.herald.ns.ca/cgi-bin/home/displaystory?2002/12/22+126.raw+Business

http://groups.google.com/group/hfx.forsale/browse_thread/thread/43940ce83231ab85/4e4c696fbf04837f?q=sidney+tv+repair&rnum=1#4e4c696fbf04837f

http://www.nesda-ohio.com/iwaynet/pubhtml/May02/May18.html
http://www.nesda-ohio.com/iwaynet/pubhtml/SonyAudMod.html
http://www.nesda-ohio.com/iwaynet/pubhtml/Oct02/Oct028.html
http://www.nesda-ohio.com/iwaynet/pubhtml/Oct02/Oct029.html
 
Sidney <sidneybek@yahoo.com> wrote in message
news:27a07052-b46d-4014-a154-f6e827f81265@a19g2000prj.googlegroups.com...
42" Panasonic plasma TV model: TH-42PX60U, year: Nov 2006, no power,
no blinking or standby LED lights. The TV was on while this happened.
Upon troubleshooting I discovered F401=8 amp ceramic time lag fuse to
be open. From extensive googling after no obvious shorts in power
supply using Fluke DMM model 29 series II. I found the following
common repair tips:

Q406=N-ch MOSFET # RJK5020=Panasonic # B1DEKQ000003=shorted
R410=10 ohm, 5w ceramic thermal cut off=Panasonic # D1F5100E0003=open
F401 & F402=8 amp ceramic time lag fuse= Panasonic # K5D802BNA005= one
or the other open

well on this TV none of the above parts are defective except F401.
According to a Panasonic service bulletin for a similar model:

http://www.tvrepairtips.org/files/tip/286/tt-08-27.pdf

they say to add a C426=ECQB1H103JZ but on that bulletin it's if Q406
is shorted but not on mine and the board on the service bulletin is
somewhat different than mine. I haven't yet replaced F401 or placed a
100 watt light bulb in place. But would like some tips before I
proceed. Thanks.

SidneyŽ ™
Dartmouth, Nova Scotia
Canada

http://web.archive.org/web/20040312120415/www.herald.ns.ca/cgi-bin/home/disp
layphoto?2002/12/22+126.raw+1019+Business+

http://web.archive.org/web/20040229023255/http://www.herald.ns.ca/cgi-bin/ho
me/displaystory?2002/12/22+126.raw+Business

http://groups.google.com/group/hfx.forsale/browse_thread/thread/43940ce83231
ab85/4e4c696fbf04837f?q=sidney+tv+repair&rnum=1#4e4c696fbf04837f

http://www.nesda-ohio.com/iwaynet/pubhtml/May02/May18.html
http://www.nesda-ohio.com/iwaynet/pubhtml/SonyAudMod.html
http://www.nesda-ohio.com/iwaynet/pubhtml/Oct02/Oct028.html
http://www.nesda-ohio.com/iwaynet/pubhtml/Oct02/Oct029.html



++++


open up the fuse and see if it failed gently (probably just getting tired in
old age) or catastrophically so something else failing caused it to fail
 
"N_Cook" <diverse@tcp.co.uk> wrote in message
news:iotvpg$dq$1@dont-email.me...
Sidney <sidneybek@yahoo.com> wrote in message
news:27a07052-b46d-4014-a154-f6e827f81265@a19g2000prj.googlegroups.com...
42" Panasonic plasma TV model: TH-42PX60U, year: Nov 2006, no power,
no blinking or standby LED lights. The TV was on while this happened.
Upon troubleshooting I discovered F401=8 amp ceramic time lag fuse to
be open. From extensive googling after no obvious shorts in power
supply using Fluke DMM model 29 series II. I found the following
common repair tips:

Q406=N-ch MOSFET # RJK5020=Panasonic # B1DEKQ000003=shorted
R410=10 ohm, 5w ceramic thermal cut off=Panasonic # D1F5100E0003=open
F401 & F402=8 amp ceramic time lag fuse= Panasonic # K5D802BNA005= one
or the other open

well on this TV none of the above parts are defective except F401.
According to a Panasonic service bulletin for a similar model:

http://www.tvrepairtips.org/files/tip/286/tt-08-27.pdf

they say to add a C426=ECQB1H103JZ but on that bulletin it's if Q406
is shorted but not on mine and the board on the service bulletin is
somewhat different than mine. I haven't yet replaced F401 or placed a
100 watt light bulb in place. But would like some tips before I
proceed. Thanks.

SidneyŽ ™
Dartmouth, Nova Scotia
Canada

http://web.archive.org/web/20040312120415/www.herald.ns.ca/cgi-bin/home/disp
layphoto?2002/12/22+126.raw+1019+Business+

http://web.archive.org/web/20040229023255/http://www.herald.ns.ca/cgi-bin/ho
me/displaystory?2002/12/22+126.raw+Business

http://groups.google.com/group/hfx.forsale/browse_thread/thread/43940ce83231
ab85/4e4c696fbf04837f?q=sidney+tv+repair&rnum=1#4e4c696fbf04837f

http://www.nesda-ohio.com/iwaynet/pubhtml/May02/May18.html
http://www.nesda-ohio.com/iwaynet/pubhtml/SonyAudMod.html
http://www.nesda-ohio.com/iwaynet/pubhtml/Oct02/Oct028.html
http://www.nesda-ohio.com/iwaynet/pubhtml/Oct02/Oct029.html



++++


open up the fuse and see if it failed gently (probably just getting tired
in
old age) or catastrophically so something else failing caused it to fail
Click to expand...
I have seen some Samsung models on which the fuse goes for no reason other
than the fuse holder is defective - not rated for high enough amperage. The
fuses are GMA size ceramic types. The holders in question are ordinary
looking except they have a sort of black plastic case in which the actual
metal holders are nestled.. There was obvious overheating - a discolored and
crusty appearance to the metal, and the plastic was deformed sometimes even
to the point of melting somewhat. A fuse should never get hot like that - it
was the ohmic resistance between the holder and the fuse ends. A brand new
supply from Samsung failed the same way within days. A solder-in pigtail
type fuse solved the problem for good.

Mark Z.
 
On Sat, 23 Apr 2011 08:42:00 +0100, N_Cook wrote:

Sidney <sidneybek@yahoo.com> wrote in message
news:27a07052-b46d-4014-a154-
f6e827f81265@a19g2000prj.googlegroups.com...
42" Panasonic plasma TV model: TH-42PX60U, year: Nov 2006, no power, no
blinking or standby LED lights. The TV was on while this happened. Upon
troubleshooting I discovered F401=8 amp ceramic time lag fuse to be
open. From extensive googling after no obvious shorts in power supply
using Fluke DMM model 29 series II. I found the following common repair
tips:

Q406=N-ch MOSFET # RJK5020=Panasonic # B1DEKQ000003=shorted R410=10 ohm,
5w ceramic thermal cut off=Panasonic # D1F5100E0003=open F401 & F402=8
amp ceramic time lag fuse= Panasonic # K5D802BNA005= one or the other
open

well on this TV none of the above parts are defective except F401.
According to a Panasonic service bulletin for a similar model:

http://www.tvrepairtips.org/files/tip/286/tt-08-27.pdf

they say to add a C426=ECQB1H103JZ but on that bulletin it's if Q406 is
shorted but not on mine and the board on the service bulletin is
somewhat different than mine. I haven't yet replaced F401 or placed a
100 watt light bulb in place. But would like some tips before I proceed.
Thanks.

Sidney® ™
Dartmouth, Nova Scotia
Canada

http://web.archive.org/web/20040312120415/www.herald.ns.ca/cgi-bin/home/
disp
layphoto?2002/12/22+126.raw+1019+Business+

http://web.archive.org/web/20040229023255/http://www.herald.ns.ca/cgi-
bin/ho
me/displaystory?2002/12/22+126.raw+Business

http://groups.google.com/group/hfx.forsale/browse_thread/
thread/43940ce83231
ab85/4e4c696fbf04837f?q=sidney+tv+repair&rnum=1#4e4c696fbf04837f

http://www.nesda-ohio.com/iwaynet/pubhtml/May02/May18.html
http://www.nesda-ohio.com/iwaynet/pubhtml/SonyAudMod.html
http://www.nesda-ohio.com/iwaynet/pubhtml/Oct02/Oct028.html
http://www.nesda-ohio.com/iwaynet/pubhtml/Oct02/Oct029.html



++++


open up the fuse and see if it failed gently (probably just getting
tired in old age) or catastrophically so something else failing caused
it to fail
Click to expand...

Or lightly fuse it and cross your fingers.


--
Live Fast Die Young, Leave A Pretty Corpse
 
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