Question about Panasonic PT-47WX42 47" Rear Projection Television

10 Answers

1080i How could I make my Panasonic PT-47WX42 47 into a 1080i

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  • ganeshaya Aug 29, 2008

    si pueden decirme como me puedo meter al sistema de una panasonic pt47wx42 para hacerla de 480p a 1080i y poder alinear correcta mente el color azul porque en algunas partes de color negro se le miran unas linea azules ya sea en el fondo o en algunas esquinas se los agradezco mucho

  • ganeshaya Aug 29, 2008

    como puedo alinear corretamente la convergencia azul en la television panasonic pt47wx42 meterme en su sitema cuadriculado para ajusta cuadro por cuadro osea cual es el codigo se los agradezco mucho

  • ganeshaya Aug 29, 2008

    o tengo el manual

  • ganeshaya Aug 29, 2008

    ya lo hice pero que partes por corregir necesito meterme al sistema para alinear bien todos los cuadritos y no aparescan lineas azules en la imagen ya sea a tra o en frente

  • ganeshaya Aug 29, 2008

    My Panosonic PT-47WX42 made a blue ghost and i changed both convergence ICS STK392-110 and i adjusted the 8 squares red and blue but still in some parts in the image it still has blue lines what could I do to correct them??? THANK YOU

  • ganeshaya Aug 29, 2008

    I have done everything that you guys have mention but i still cannot fix the problem of the blue lines that's why i posted the last comment....

  • ganeshaya Aug 29, 2008

    adjusting the digital convergence because in some parts of the images you could see blue lines..

  • ganeshaya Sep 01, 2008

    How could i adjust the parameters for HD so i could align the blue color correctly for my panasonic PT-47WX42 ?

  • ganeshaya Sep 01, 2008

    How could i get the manual of convengence for adjustments in format of HD for my panasonic PT-47WX42 ?

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  • Panasonic Master
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El Pana pt47wx42sufre de varios problemas en relazion a la convergenzia.
Controle las resistencias cerca de los STK,muchas veces, quando se funde uno de los STK necesita tambien cambiar lo resistores.
Mire si alguno de los resistores que alimentan los STK eta quemado, chequeando continuidad por medio de un multimetro.

En relazion con los problemas de seteo de convergencia en el pt47wx42se vean los sitios aqui abajo:

http://www.hdtvoice.com/voice/showthread.php?t=28929

http://www.hdtvoice.com/voice/showthread.php?t=16457&page=2

Posted on Sep 01, 2008

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  • Master
  • 2,071 Answers

Panasonic rear projection sets

Red convergence was way off one day, and doing some research, I discovered a common failure is the STK392-110 convergence amplifiers that this set uses. Pulling the back off, it was easy to locate these two chips on the left side near the tuner/inputs attached to huge heat sinks.

I ordered STK392-180 chips as replacements as they can deal with heat and power better and are direct replacements otherwise. Here's some tips below:

* Detach the 9 cables on the convergence/tuner board, but leave it attached to the power board, you'll have enough room to work with

* Get a good deslodering tool as each chip has 18 pins

* When you detach the chips from the heatsinks via 2 screws each, you WILL strip the heads as they used very soft brass screws. Plan on getting new ones from Home Depot or Lowes as well as new washers.

* With the chips out, measure the resistance of the handful of resistors nearby. It's easy and they should all be labeled. Mine were all within 10% of rated.

* Make sure you get some good heat sink compound. I used arctic silver from a CPU cooler

* Putting the new chips in place will be a pain because the leads bend easily, so just be patient

* Screw the heat sinks to the chips first such that they'll dissipate heat from the soldering iron

* Have lots of light while soldering

* If you plug it all back in and it flashes the power LED 3 times, recheck your solder connections. You can trace the solder points to the traces on the board easily.

* If you plug it all back in and it flashes the power LED slowly on and off, check to see if you have any shorts. It's easy to do due to the proximity of the pins on the chips. Fortunately the circuit is robust, so it's unlikely to blow anything. Note that the top two pins of each chip ARE supposed to be connected to each other electrically.

* If it all comes back on, you'll likely have to play with convergence. The menus will get you 1/2 way, but be sure to enter service mode and do that convergence as well. To do this, set your input to cable, set the self timer to 30 minutes, exit the menus, tune channel 124, hold the volume down button on the set (not the remote) and you'll get a "CHK" in the top left. Hit the power button on the remote and navigate to the fine CONV settings. You mostly want to play with the red point and blue point settings. You can cycle through them with the "1" key on the remote, and to enter them, use Mute. Then move your cursor via remote, and hit mute again, the remote then can pull convergence as needed. Hit "7" to save and exit. Power the set off via the buttons on it and you're all set. Note that convergence for 480i and 1080i need to be set separately. If you want to set 1080i, after the CHK appears, use video input selector to tune to a HD signal and do the same steps.

Hope this may help you ;

Regards,
VOTIT

Posted on Sep 01, 2008

  • 2 more comments 
  • LORETO LACARON
    LORETO LACARON Sep 01, 2008

    The menus will get you 1/2 way,
    but be sure to enter service mode and do that convergence as well. To
    do this, set your input to cable, set the self timer to 30 minutes,
    exit the menus, tune channel 124, hold the volume down button on the
    set (not the remote) and you'll get a "CHK" in the top left. Hit the
    power button on the remote and navigate to the fine CONV settings. You
    mostly want to play with the red point and blue point settings. You can
    cycle through them with the "1" key on the remote, and to enter them,
    use Mute. Then move your cursor via remote, and hit mute again, the
    remote then can pull convergence as needed. Hit "7" to save and exit.
    Power the set off via the buttons on it and you're all set. Note that
    convergence for 480i and 1080i need to be set separately. If you want
    to set 1080i, after the CHK appears, use video input selector to tune
    to a HD signal and do the same steps.

    Hope this may help you ;

  • LORETO LACARON
    LORETO LACARON Sep 01, 2008

    The menus will get you 1/2 way,
    but be sure to enter service mode and do that convergence as well. To
    do this, set your input to cable, set the self timer to 30 minutes,
    exit the menus, tune channel 124, hold the volume down button on the
    set (not the remote) and you'll get a "CHK" in the top left. Hit the
    power button on the remote and navigate to the fine CONV settings. You
    mostly want to play with the red point and blue point settings. You can
    cycle through them with the "1" key on the remote, and to enter them,
    use Mute. Then move your cursor via remote, and hit mute again, the
    remote then can pull convergence as needed. Hit "7" to save and exit.
    Power the set off via the buttons on it and you're all set. Note that
    convergence for 480i and 1080i need to be set separately. If you want
    to set 1080i, after the CHK appears, use video input selector to tune
    to a HD signal and do the same steps.

    Hope this may help you ;

  • LORETO LACARON
    LORETO LACARON Sep 01, 2008

    The problem you have is the convergence STK chips IC i have a picture
    guide an a testimony how they solve the convergence problem;
    Just click below for picture guide a do-it-yourself guide;

    http://www.repairfaq.org/sam/tvfaq.htm#t...
    or
    http://home.earthlink.net/~oleg.filippov...
    or
    http://cmpalmer.blogspot.com/2006/11/fix...

    Regards,
    VOTIT




  • LORETO LACARON
    LORETO LACARON Sep 01, 2008

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  • Master
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Its now the job of a technician at your place, because he would be having require spare parts.and can check whether the connections are proper.
thanks.please rathe solution.

Posted on Aug 29, 2008

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  • Master
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What is the main issue here ?

1080i or loosing color ?

Posted on Aug 29, 2008

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  • Master
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This language pro....sorry ok

Posted on Aug 29, 2008

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  • Master
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Vez la imagen como tridimencional o 3D?
Si el color azul esta desalineado y no lo puedes sincronizar la convergencia azul con el control remoto, quiere decir que hay unas partes que se tienen que cambiar. Estos circuitos integrados son los STK392-110 o es posible que solo sea una resistencia que se ha quemado.

Posted on Aug 29, 2008

  • Jaime Hernandez Aug 29, 2008

    Para realizar los ajustes de la convergencia en el modo de servicio, tienes que tener el manual de servicio.

    Por lo general estos ajustes no se tienen que hacer solamente cuando el TV esta nuevo, de ahi en adelante si los circuitos integrados que te mencione fallan; te dara la imagen distorcionada y no lo podras ajustar aun entrando al modo the servicio.

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  • Master
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The link will guide u get more information to solve ur problem:
http://service.us.panasonic.com/OPERMANPDF/PT47WX42F.PDF

pls do rate the solution

thanks.
regards.
fixya expert team

Posted on Aug 29, 2008

  • tech expert12 Aug 29, 2008

    technical help at your place is much ---much advisable.thanks.

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  • Master
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Did you have a manual, or a instruction manual?

Posted on Aug 29, 2008

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  • Master
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Can you explain the problem in more detail..

Posted on Aug 29, 2008

  • Legin Varghese
    Legin Varghese Aug 29, 2008

    The PT-47WX42 projects a good-looking picture and includes just about
    everything you could ask for in an HDTV. It won't match the performance
    of many higher-end sets in this size range, but it's still a very good
    value. Set on a standard-sized pedestal, this top-heavy 47-incher looks
    like a little big man. The plastic finish is dark gray, and the
    pedestal has black speaker cloth on the front. Two speakers are set
    into the base. Front controls and inputs, including S-Video, are hidden
    under a flip-open door directly below the screen.


    The PT-47WX42's remote is a backlit universal model that's fairly quick
    to work with the thumb, though its clutter of small buttons is a little
    confusing. Panasonic's rudimentary onscreen menus won't win any
    international design competitions, but they get the job done. As an
    HDTV-ready television, the PT-47WX42 can show the most common HDTV
    format (1080i) when connected to a separate, external HDTV tuner. It
    also reproduces the 480p picture from a progressive-scan DVD player. An
    onboard scan converter digitizes all other incoming signals and
    displays them as 480-line progressive-scan video (480p). That process
    adds information to the picture and also removes the visible scan lines
    that can be so obvious on analog rear-projection sets. The scan
    converter has 3:2 pulldown to help eliminate artifacts created in the
    transfer of film to video.

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  • Panasonic Master
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If you don't use information that someone else has researched to solve problems or address tech issues already then you are just wasting valuable time. This is for expert toddg

Posted on Aug 29, 2008

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