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42" Panasonic plasma TV model: TH-42PX60U dead
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/200403121...1019+Business+ http://web.archive.org/web/200402290...6.raw+Business http://groups.google.com/group/hfx.f...696 fbf04837f http://www.nesda-ohio.com/iwaynet/pu...y02/May18.html http://www.nesda-ohio.com/iwaynet/pu...onyAudMod.html http://www.nesda-ohio.com/iwaynet/pu...02/Oct028.html http://www.nesda-ohio.com/iwaynet/pu...02/Oct029.html |
42" Panasonic plasma TV model: TH-42PX60U dead
Sidney wrote in message
... 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/200403121...-bin/home/disp layphoto?2002/12/22+126.raw+1019+Business+ http://web.archive.org/web/200402290....ca/cgi-bin/ho me/displaystory?2002/12/22+126.raw+Business http://groups.google.com/group/hfx.f...d/43940ce83231 ab85/4e4c696fbf04837f?q=sidney+tv+repair&rnum=1#4e4c696 fbf04837f http://www.nesda-ohio.com/iwaynet/pu...y02/May18.html http://www.nesda-ohio.com/iwaynet/pu...onyAudMod.html http://www.nesda-ohio.com/iwaynet/pu...02/Oct028.html http://www.nesda-ohio.com/iwaynet/pu...02/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 |
42" Panasonic plasma TV model: TH-42PX60U dead
"N_Cook" wrote in message
... Sidney wrote in message ... 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/200403121...-bin/home/disp layphoto?2002/12/22+126.raw+1019+Business+ http://web.archive.org/web/200402290....ca/cgi-bin/ho me/displaystory?2002/12/22+126.raw+Business http://groups.google.com/group/hfx.f...d/43940ce83231 ab85/4e4c696fbf04837f?q=sidney+tv+repair&rnum=1#4e4c696 fbf04837f http://www.nesda-ohio.com/iwaynet/pu...y02/May18.html http://www.nesda-ohio.com/iwaynet/pu...onyAudMod.html http://www.nesda-ohio.com/iwaynet/pu...02/Oct028.html http://www.nesda-ohio.com/iwaynet/pu...02/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 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. |
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