Question about Samsung LNT4069F TV

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I have a Samsung LNT4069F LCD that the picture would go out after 30 minutes (sound is normal). You could turn it off and on and it would come on for 15 minutes. With each on/off cycle the amount of time it stayed on was less. After a month of this, now the picture does not come on at all. There is no backlighting. Can you help?

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  • bretbaldwin Jul 21, 2010

    That fixed the problem. Thank you very much!!

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  • 10,594 Answers

Hi,
How old is this TV?
If its 2-3 years old then power supply board got leaky capacitors problem and replacement of these leaky capacitors in output section of power supply board will fix your tv problem.
I'm not sure about your expertise for parts replacement in circuit board that needs soldering work so local tv repair shop would help you for that if you feel uncomfortable replacing leaky capacitors in power supply board.
Let me know if you have additional question.
Thanks.

Posted on Jul 15, 2010

  • 2 more comments 
  • bretbaldwin Jul 15, 2010

    I have done some soldering, but is there any information (tutorials) that would walk me through the process of identifying and replacing them?

  • Shahid Electronics
    Shahid Electronics Jul 15, 2010

    OK, below is image of power supply board, capacitors that need to be replaced are marked with yellow circle.




  • Shahid Electronics
    Shahid Electronics Jul 15, 2010

    Make sure to replace all of these capacitors with same value written on each capacitor.



  • Shahid Electronics
    Shahid Electronics Jul 21, 2010

    Good to know that you fixed your tv problem.
    Thanks.



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