Question about Sony Televison & Video

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My sony wega tv not a flat screen older trinitron model the standby light is blinking and can't even get the tv to turn on because of blinking light

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  • rosario3562 May 09, 2010

    THE MODEL NO IS KV-32FS120

  • rosario3562 May 09, 2010

    I can't turn on tv with remote or manually

  • rosario3562 May 09, 2010

    it blinks 5 times then pause

  • rosario3562 May 09, 2010

    M sony wega tv model KV-32FS120 won't turn on the standby light is blinking 5 times then a pause. I can't turn on tv with either remote or manually

  • rosario3562 May 09, 2010

    that didn't work so I guess it is the picture tube. Thanks for your help

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2 Answers

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  • Master
  • 10,594 Answers

Hi,
Let me know model number of your Sony tv to diagnose problem properly.
Thanks.

Posted on May 09, 2010

  • 2 more comments 
  • Shahid Electronics
    Shahid Electronics May 09, 2010

    THE MODEL NO IS KV-32FS120
    ==========================================================

    Thanks for model number info.
    How many times red standby light is blinking, there would be 3 seconds big pause between blinks.




  • Shahid Electronics
    Shahid Electronics May 09, 2010

    it blinks 5 times then pause
    =======================================

    It is incorrect white balance error, that means picture tube is not producing correct white level.
    Please adjust screen volts of picture tube. Screen volt control knob is located on flyback transformer.
    If you have no idea about tv repair then ask local tech to do so.
    Hope this will fix your tv problem.
    Thanks.



  • Shahid Electronics
    Shahid Electronics May 09, 2010

    OK, unplug tv from wall socket for minute to get it reset, replug back in and turn On tv that might solve your tv problem.



  • Shahid Electronics
    Shahid Electronics May 09, 2010

    that didn't work so I guess it is the picture tube. Thanks for your
    help
    ====================================================


    Adjust screen volts that might fix your tv problem.


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  • Sony Master
  • 5,807 Answers

Hi

rosario3562,
Thanks in advance for choosing Fixya for assistance,

If the standby light is blinking , it only means that your TV have entered

into Protection Mode, and have succeeded not to inflict further damage.


Inside the TV , There is a Microprocessor that detects each circuits

on the TV from OVP , OCP , Horizontal and Vertical Deflection

Circuits the moment it starts up , and halts the system from turning

on if there is a failure in any of the circuits mentioned.


You may need to post what Model , chassis number , year perhaps

of the TV, and the things you have done to remedy the cause.


These unit have dangerous voltages inside ( even when it is unplugged ),

and may require component level troubleshooting.




Might as well post the number of blinks your TV is having to narrow

down the possible causes of the symptoms.


More details , means more possible solutions.

Hope to have a response from you soon , as we can provide the possible

solution to your problem.


Regards,

palaboy






Posted on May 09, 2010

  • 5 more comments 
  • Rommel Cana
    Rommel Cana May 09, 2010

    Blinking 5 times means:




    Check the 200 volt line at power up. If it only goes to 130 volts then it means


    Flyback

    is not working.


    There could also be component failure , a resistor or a Discrete transistor in the Video Circuits.

    Check video out ( IC702 TDA6108JF) , Q700, 701, 703 and other components on the C board, also

    check Q562, 561, 564, Q530,Q532, Q531 on the A board.

    Also unit be in IK blanking, try turning up screen slightly.


    Picture tube would not be an issue cause , the TV still doesn't have sound.

    These circuits can be diagnosed and troubleshoot even without the CRT connected and the

    C Board.

    Here is a typical service position










  • Rommel Cana
    Rommel Cana May 09, 2010

    Here are additional checkpoints on the M-board :





    IC633 is a Low Voltage Regulator ( 3.3 V ) that supplies IC 001


    Input Voltage of IC633 is +9V







    There is also a supply voltage on pin 42 which can be suppressed by:





    Check also for Q515, and associated components



  • Rommel Cana
    Rommel Cana May 10, 2010

    here is a additional info, schematics on the flyback section:



    Have a check also on D531


  • Rommel Cana
    Rommel Cana May 23, 2010

    here is another and simple way , to verify , if it is really the CRT.

    Remove the CRT socket , with the Board ( Unit unplugged ).


    The unit will turn on properly if the CRT is really bad.


    If it does not, then CRT is not the issue.


  • Rommel Cana
    Rommel Cana May 23, 2010

    And if an antenna is connected or other source, it should produce a normal sound on the speaker,


    with the CRT disconnected.


  • Rommel Cana
    Rommel Cana May 23, 2010

    and when troubleshooting , there is no guessing.

    Voltage reading and measurement is a must and necessary to identify and find the real cause.

    Hope these guides helps and guide you, even though,


    it might have been already awarded or credited on somebody else.

    Although I maybe the last but I hope , I never be the least.

    Hoping you'll find the solution in a right way.!





  • Rommel Cana
    Rommel Cana Jun 25, 2010

    here is a guide , how to remove the CRT board:





    Follow the arrow directions gently but surely.


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