Question about LG DU-42PX12XC 42 in. Plasma HDTV

2 Answers

My LG DU-42PX12X can not turn on Power button is flashing and stays green but no audio and video?

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  • Zdenko Trivun Dec 21, 2010

    Thanks for quick answer.
    I forgot to mention that TV turns on after few hours or two days but this time is almost a week.
    May I change powee supply and which one should be?
    Is it worth to repair?
    Regards,
    Zdenko

  • Zdenko Trivun Dec 21, 2010

    Thanks for quick answer. I forgot to mention that TV turns on after few hours or two days but this time is almost a week. May I change powee supply and which one should be? Is it worth to repair? Regards,

    Zdenko

  • Zdenko Trivun Dec 21, 2010

    Capacitors are OK
    Do you know which board would be?

  • Zdenko Trivun Dec 21, 2010

    thanks

  • Zdenko Trivun Dec 25, 2010

    I HOPE SO

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2 Answers

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  • LG Master
  • 5,138 Answers

Look for Bad Capacitors on the power supply board they will be vented or puffed up on top. 1000uf 16v 2200uf 10v 3300uf 10v

Posted on Dec 21, 2010

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  • ladywinn
    ladywinn Dec 21, 2010

    Let me see if I can Find out the Power Supply Board # and Price.

  • ladywinn
    ladywinn Dec 21, 2010

    Shopjimmy.com has power supply board PN# 350V00181B Price $119.00
    Go to their website and type in your Model# and they will show you a list of boards in stock and Prices.
    Encompass Parts Distribution is another Company who might have Part
    1-800-638-3328
    PTS they rebuilt boards 1-800-844-7871

  • ladywinn
    ladywinn Dec 21, 2010

    PN#3501V00181b

  • ladywinn
    ladywinn Dec 21, 2010

    Encompass wants $238.00 For Power Supply Board, and dont have any in stock.

  • ladywinn
    ladywinn Dec 21, 2010

    Shopjimmy will show what the Board looks like.

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  • LG Master
  • 12,061 Answers

Hi, well this problem doesn't have anything really to do with the Power switch, as this set, uses soft switches, and doesn't actually switch on/off the power. In my experience, this is a pretty classic switchmode power supply problem. You see the PSU's protection circuitry, has sensed a severe potential problem, and is shutting it 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, 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, also sometimes, there has been a service bulletin in issued and the repair may be subsided or even free. There are many, many, many reasons that display this symptom, one must work through the troubleshooting steps to isolate and identify, the Cause and repair that and any damage done




http://www.retrevo.com/support/LG-DU-42PX12X-TVs-manual/id/373ag105/t/2/


Above is your user manual below is your Service and repair manual.

http://elektrotanya.com/lg_du-42px12x_du-42px12xc_ch_af-044a_sm.pdf/download.html

Posted on Dec 21, 2010

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