Question about LG 42PC3D 42 in. Plasma Television

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My LG CRT HDTV will not turn on. it just clicks on and off but no picture appears. Was working fine, I had my laptop connected to it streaming video from the net and when I had finished and returned to the normal channels from AV3 this happened.

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  • LG Master
  • 12,061 Answers

This is a classic switchmode power supply, shutting down to avoid a fire, explosion, or both. This set had developed a problem, that is so severe that the set must be shut down, This set should be removed from the Power, and in my professional recommendation, you should get a "Quote" for repair, from, an, LG, Approved Service Center, this point is very important for a good result, Always contact, their local, "Head Office" Now, when you get the information you want, then you can decide as to repair of replacement. The reason we want an approved agent, is that way, all the engineers are trained on their own brand sets, they have seen almost all faults, and will get the job done quicker, and for less cost, and usually have parts on hand.

http://www.retrevo.com/support/LG-42PC3D-TVs-manual/id/371bh530/t/2/
Above is your user manual below is your service and repair manual.
http://elektrotanya.com/lg_42pc3d-series.pdf/download.html

Posted on Aug 08, 2010

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  • Master
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I have seen this before. This has nothing to do with the inputs. If you see a constant blinking LED at the front when you hear the clicking noise, then you probably have a bad flyback switching regulator. It is also possible that some near by components may be shorted. A component level repair is possible and shouldn't cost you too much.

Posted on Aug 08, 2010

  • 2 more comments 
  • alan_poole Aug 08, 2010

    Thanks, I will follow up on your suggestion.

  • eagle338
    eagle338 Aug 08, 2010

    And reject my solution?

  • alan_poole Aug 08, 2010

    Not at all, just seeing if there were other ideas you never know. I intend to contact a technician tomorrow and your suggestion will be what I am telling him. No offence meant hopefully none taken.

  • eagle338
    eagle338 Aug 08, 2010

    Mope no offense. Only my rating. Anyways good luck with the repair.

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