LG 42LC2D 42 in. LCD HDTV Logo
Anonymous Posted on Mar 05, 2011

Hi i have a 42" LG lcd tv .When i switch it on

1 Answer

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  • Master 1,591 Answers
  • Posted on Mar 05, 2011
Anonymous
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Joined: Feb 21, 2011
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The inverter for the backlight likely has a bad capacitor or more. The fluctuating high voltage is causing the jumping and eventual blackness until sufficient charge is on the caps, at which point it stabilizes...it eventually will stay black unless the caps are replaced.

Testimonial: "thanks for that super tech, thats much appreciated Theres still some good people out there! Best wishes stewart"

  • 2 more comments 
  • Anonymous Mar 07, 2011

    thanks super tech for that information .It is very much appreciated .and nice that you have taken the time out to offer advice to others on tech aspects . May your good work long continue

  • rostv8 Apr 07, 2011

    Mine does the same, how much would it cost for the caps and for it to get fixed. Is it a big job or just a small one?

  • Anonymous Apr 07, 2011

    Watch this video and decide for yourself!http://www.youtube.com/watch?v=8l0AUj8QU...
    have a great day!

  • Nicholass Rowswell
    Nicholass Rowswell Jun 29, 2015

    Are the caps in question on the main board? got the same problem and some of the caps have a solid resistance. I basically had this problemhttps://youtu.be/qEdDu1D5oPA but now it just flashes the green led and goes back to standby. With a little flicker of white in a corner when it tries to turn on is that same problem describes here I have taken the main board out. I had tried changing the power board caps as that is a common problem but didn't work so I found this thread after digging deeper.
    Cheers

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