Question about Sony Grand WEGA KF50SX100 50" TV

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I have a TV Sony KF-50SX100 and I cannot turn it on, the indicator is staying at amber color and does not want to turn it green. The indicator for the lamp is not flashing, therefore I am assuming that the lamp is OK. Thanks

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  • 4 more comments 
  • prambaud Oct 10, 2010

    I have unplug the TV for more than 30 mn and the indicator does not flash and the led is remaining amber

  • prambaud Oct 10, 2010

    there is no blinking of the led


  • prambaud Oct 10, 2010

    Thanks, I have already done that and change the battery of the remote, I did press Channel/Program. I also tried to turn it off with the remote in order to get the red led, but nothing. The tv remains on amber

  • prambaud Oct 10, 2010

    The led is still on amber; The tv does not turn on despite any pressing on the remote with new battery

  • prambaud Oct 11, 2010

    No, I do not hear the relay click, I do remember now that that prior to turn it on the relay was clicking (when it was running well). Do you suggest to change the relay? Do you know how can I access to the relay? Thanks

  • prambaud Oct 11, 2010

    Yes I do, thanks for your guidance, is the power supply board a specific spare part

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  • Master
  • 10,594 Answers

Hi,
Unplug tv from wall socket for minute, replug back in and turn it On.
If standby light gets red and start blinking, let me know how many times it is blinking after 3 seconds long pause to diagnose possible cause of problem.
Thanks.

Posted on Oct 10, 2010

  • 3 more comments 
  • Shahid Electronics
    Shahid Electronics Oct 10, 2010

    Press main switch once and if tv still does not power up then press Channel/ Program button on remote to turn On.
    Amber light indicates that tv is on standby mode.

  • Shahid Electronics
    Shahid Electronics Oct 10, 2010

    OK, let me study its schematics as I can think of power supply problem in your tv.
    Get back to you shortly with info, please wait my next post.

  • Shahid Electronics
    Shahid Electronics Oct 10, 2010

    Do you hear relay click when press power button to turn tv On?

  • Shahid Electronics
    Shahid Electronics Oct 11, 2010

    Power supply board seems defective and need to be replaced.
    Do you have prior experience to fix electronics stuff to guide you more?

  • Shahid Electronics
    Shahid Electronics Oct 11, 2010

    There is G Board located at left side from rear view as shown in below image, this is power supply board that seems not working and failing to power up tv.
    Please check power supply board input and output volts as reference volts would be written on connectors on G Board. If input volt is OK but no output volts then replace/ swap to confirm G Board.
    Thanks.


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