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My LG plasma tv model 42pn450b-za is not turning on but there is a power light indication. it wont just turn on. PLS HELP. why is it?

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There is some short circuit inside it. Might be a damaged sustain board. Contact any service technician. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" or "Magazine" will make surf easy Pull up older posts. Surf the site with patience.
http://electronicshelponline.blogspot.com/

Posted on May 08, 2014

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6ya6ya
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Posted on Jan 02, 2017

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  • 133 Answers

SOURCE: LG 42 plasma power problem

needs power supply Part number 6709900023A
it is a 171 dollar part, you should be able to order through LG,

Posted on Jan 10, 2009

  • 8457 Answers

SOURCE: TH-50PZ80U POWER INDICATOR LIGHT KEEPS BLINKING

Power board it dead,take the tv aparts.Check for Capacitors parts for puff up or burst open.Know how to solders?replaced these capacitors in the power board.Or replaced the whole power board.Tries Shopjimmy.com,Ebay.com.

Posted on Jan 19, 2010

  • 1 Answer

SOURCE: my lg tv (model number 42LH40) won't turn on

There might be an off on switch under the lower right hand corner of the set. (feel for it) and switch it.

Posted on Feb 13, 2010

  • 41 Answers

SOURCE: LG plasma TV turned off, after the picture very light

I think you have a defective power board. the pop sound in coming from the board and giving you a low output voltage. do it yourself price about two hundred for parts.

Posted on Mar 13, 2010

toolkits
  • 1099 Answers

SOURCE: LG 32" Plasma TV power-on problem

Hello,

Your power supply board is dead, u know basic electronics’ and soldering? Most of the times, the power supply board just have dead leakages gases capacitors.These capacitors always bulges up on it top,or puff up on it top.Replaced these gases leakages capacitors will get your TV power stable,and work again.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.
hope this helps...

Posted on Jul 02, 2010

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Hi I have a LG 42' plasma, but it wont turn


Hi Paul, This seems to be a common issue in most of the plasma flat screens. You are almost accurate in guessing the reason of trouble. The issue with the TV is mainly with the power board itself which happens in most models. Even though if you try replacing board level components you will finally end up in replacing the power board for sure. I managed to find a contact who can help with spare parts of most of the plasma models...i am posting it here for your reference. plasma TV parts-- Steve Hu: masterhu@yahoo.com .
Have a nice day!!!!

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