Question about LG 50PX4DR 50 in. Plasma TV

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42 inch LG Plasma TV - Lost picture

Hi , was watching my 42 inch LG Plasma TV last night, when I heard a click noise and the picture went immediately but the sound remained fine, I could switch channels but no picture, would you have any idea what the problem is. thanks

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  • sunny dykes Nov 07, 2007

    my tv have sound but no picture

  • laosyboy Nov 11, 2007

    yes, i am having the same problem. sound burt no picture

  • nursen05 Nov 21, 2007

    Hi...same thing happend to my LG 42 plasma last night...wasn't on more than 10 minutes and it clicked and picture went black....sound and channels work ok....Any ideas? Less than 1 year 3 month old??

    Melissa

  • Anonymous Mar 14, 2014

    after switching on can hear realy clicks twice but tv does not come on

  • Anonymous Mar 15, 2014

    Have tried te fine tune option but very weak snowy picture and no sound coming through. We have it routed through a booster box in the attic that's still lit up and dtv is working ok but just won't tune in to sky any ideas or does anyone know the frequency that sky broadcasts through

  • Anonymous Mar 17, 2014

    problem with LG smart led 42" tv HAS sound no picture why?

  • Anonymous Mar 17, 2014

    problem with LG smart led 42" tv HAS sound no picture why?

  • Anonymous Mar 21, 2014

    Tv picture won't come in

  • Anonymous Mar 22, 2014

    When TV on its got static sound even when watching TV

  • Anonymous Mar 23, 2014

    its a bluesky 42 inch screen is blue then it goes orange

  • Anonymous Mar 27, 2014

    I have no picture but there is sound. I need the repair kit consisting of y board x board and z board

  • Anonymous Mar 31, 2014

    the color is all weird in the middle

  • Anonymous Mar 31, 2014

    RCA 42 inch plasma hdtv

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  • Expert
  • 92 Answers

Sounds like it may be a software upgrade

Posted on Oct 31, 2007

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Posted on Jan 02, 2017

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SOURCE: Hi , was watching my 42 inch LG Plasma TV last

Sounds like a capacitor blew on one of the boards. Can you detect any burnt electronic smell? If the Cap blew on the Power Supply, you can either replace the Capacitor or replace the power supply board. The boards are between $79 and $149 depending where you get it. Some of the other boards, Y or Z Sus, are between $179 and $300. If you can't do it yourself, and with many 42" models selling for $649 to $899, it might be too expensive to fix.

You can find the boards on ebay or shopjimmy, youtube has videos showing how to replace them. Hope that helps.

Posted on Feb 17, 2010

SOURCE: 42 inch LG Plasma TV - Lost picture

try connecting tv to cable direct also try unplugging both converter and tv for wile like 5 mins plug both back in see if tv and converter sync

Posted on Mar 09, 2008

  • 15 Answers

SOURCE: 42 inch LG Plasma TV - Lost picture

ysus pcb that supplies voltage to the panel is faulty

Posted on Dec 15, 2007

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Hi it sounds like it has had an elctric fault like a resistor failing.
The click you heard would be a internal switch that cuts off the elctric supply to the screen to stop furthe damage hapening.
It could even be something simple like a bad solder and in that case will need locating and resoldering.
How old is the telly and how often is it used.
When you switch it off leave it off for about an hour then try again if you have allready done this then it probably is a blown resistor are you sure nothing has been pressed on controll have you tried seeing if you can acess the menu screen via the remote and see if that comes up on the screen let me know ok

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Hi , was watching my 42 inch VIORE Plasma TV last night, when I heard a click noise and the picture went immediately but the sound remained fine, I could switch channels but no picture, would you have any...


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Hi , was watching my 42 inch LG Plasma TV last night, when I heard a click noise and the picture went immediately but the sound remained fine, I could switch channels but no picture, would you have any...


Sounds like a capacitor blew on one of the boards. Can you detect any burnt electronic smell? If the Cap blew on the Power Supply, you can either replace the Capacitor or replace the power supply board. The boards are between $79 and $149 depending where you get it. Some of the other boards, Y or Z Sus, are between $179 and $300. If you can't do it yourself, and with many 42" models selling for $649 to $899, it might be too expensive to fix.

You can find the boards on ebay or shopjimmy, youtube has videos showing how to replace them. Hope that helps.

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This is almost certainly the device that sends electricity to the the plasma in the panel after failing. Bring to your local repair shop and expect to pay 300-400 parts and 100-200 labour.

Cheers,
Stephen

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If you paid by cheque or credit card, that is your proof of purchase.

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Most likely what happened is one of the capacitors went bad. When a capacitors goes bad it produces a popping sound. This could be an easy and cheap fix if you find the bad capacitor or capacitors. The bad capacitor will have a bulging top most likely on the power board but could be anywhere.

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Hi , I recently had the same problem which I was determined to fix . So I did a few weeks of research to find that it was the Y SUS board which burns out. I'm sure you realized that the TV gets hot. Personally I think this is why. circuit boards don't like heat and I've learned that the cooling fans are a joke. I replaced the board and got my picture back. I proved the fan theory because after the screen started to act up. I placed a cooling fan near the vent holes on top and the problem cleared right up,It also helps if you lower the brightness which helps out on the heat situation.I will soon be adding a fan with a temp. sensor. This shoud help if your screen has lines when you initially turn the cool TV on.then I have Some other costless solutions. Hope this helped these are great TV's and like our cars we maintain them not throw them away..................................Mr Wiseman

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Our LG 50" plasma tv screen went black after a popping noise but still had sound, after great diliberations decided to take the back off and have a peek!
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