Question about Sony Grand WEGA KF-42SX300 42" LCD TV

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We understand that your problem is: sony kf42sx300u. the tv was working well until yesterday when it appeared to have suddenly gone in to a standby mode...it is constantly in the same mode where the red light stays on and the green light flashes every so often - every 5-10 seconds. we have turned off of tv, removed the plug from socket and no joy still

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Good day!

You have a better chances if you have failing capacitors on the power supply section.

Follow this procedure on how to replace the capacitors.

  1. Remove the back cover of your TV.
  2. Look for the power supply board.
  3. After that,look for the leak or bulged on the top capacitors.
  4. If you found ,replaced it with the same type,ratings and value.
  5. And finally after you replaced bad capacitors on the board,plug-in your TV and power it ON to test if it is OK.
I hope this solution will be helpful.Thank you and good luck.

Posted on May 20, 2011

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