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Panasonic Plasma TH-50PZ77U automatically shutting off after about 3 minutes. The power button blinks on and off afterwards. I have to unplug the television to reset before I can turn on the television again. Then after about 3 minutes it shuts off again automatically.

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  • jjonesd Jun 30, 2008

    It's blinking 6 times, pause then 6 times again repeating. Thanks -Jeremy

  • jjonesd Jun 30, 2008

    It blinks six times, there is a pause and then it repeats. Thanks, -Jeremy

  • jjonesd Jun 30, 2008

    Thanks Dan! -Jeremy

  • jjonesd Jun 30, 2008

    Thanks sweet_rascal, how do I fix it? Do you have a recommendation for a service center in the Seattle area? Or someone I could call for a home visit? -Jeremy

  • jjonesd Jun 30, 2008

    I appreciate your suggestions. I'd like to click on the accept button but it's not showing up anymore. Maybe if you reply again it will? -Jeremy

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I think this is happening due to the over heating of some component inside the TV ...
the component may be capcitors or the transformers ...
just have a check is there any burning smell when you open the TV .....
this may also happen if the grounding is not proper or if the grounding wire is in loose contact inside the TV

Posted on Jun 30, 2008

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This auto shut off can be due to the some shorting in the power board or can be due to the problem of excess heating in the power board.

if you can please tell us the pattern of the blinks.

Posted on Jun 30, 2008

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  • dewan nafees ahmed Jun 30, 2008

    6 blinks means

    PROBLEM is:

    Driver SOS 1
    (SC energy recovery circuit)

    MALFUNCTIONING PART is :
    SU / SD / SC Boards


  • dewan nafees ahmed Jun 30, 2008

    SC Board = Scan Drive
    SD Board = Scan Out (Lower)
    SU Board = Scan Out (Upper)




  • dewan nafees ahmed Jun 30, 2008


    The SC board is responsible for the generation of the scan pulses. Scan pulses are used for initialization and
    selection of the pixels.
    The SU and SD boards are de-multiplexer boards that are responsible for converting serial data output of the SC
    board into parallel data to drive the panel.


  • dewan nafees ahmed Jun 30, 2008

    6 BLINKS SOS:

    PIN 90 of the MPUIC9003 monitors the status of the SC board.
    During normal operation the transistor Q6581 and IC6581 output a low to pin 90.
    If the SC board becomes defective, a high is provided to pin 90

    As a result, the unit shuts down and the power LED blinks 6 times

  • dewan nafees ahmed Jun 30, 2008

    for the service of this i would recommend you to get it done by the Panasonic authorized service center.
    and i am not aware of your area. so cant give a clear location of the service center in your area.

    but my advice is not to go for unauthorized centers.

    thank you
    please dont forget to accept the solution if you are ok with it.

    thank you once again.


  • dewan nafees ahmed Jul 05, 2008

    i am also not sure as where the accept button is present in customers side.

    since we have not been in customers side even once we don't know how this system works on your side sir.

    but if you find a accept button please don't forget to click it. thank you.


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This unit is going into protection mode because it has detected a problem inside. Can you count the number of blinks please. That should be a repeating count. This will help to isolate the problem circuit.

Thanks,
Dan

Posted on Jun 30, 2008

  • ABRsvcs Jun 30, 2008

    Thank you for the update. The 6 blinks will indicate the circuit that has the problem. I'll look up your model tonight abnd provide you with details.



    Dan

  • ABRsvcs Jun 30, 2008

    Correct info provided by Sweet_Rascal. I would do as suggested in that posting. If you go to the Panasonic website, there is a service center locator that can get you the closest authorized service center for your product based upon your Zip code.



    Dan

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