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I have an LG RZ-42PX11 42" Plasma TV, last week it started to flicker the picture for a min or so when switched on, now when it comes on, the picture is extremely grainy, accompanied by a loud buzzing that seems to be coming from the PSU. Picture flickers all the time now and cant get to full brightness. Anyone got any ideas ???

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6ya6ya
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Posted on Jan 02, 2017

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techman
  • 3130 Answers

SOURCE: Wavy Picture and Flicker

Now we have here a falure to communicate!!???LOL good movie bacjk in the late 60'S Can you guess what one?? your problem sounds to me like a main B+ capacitor, or a capacitopr off the main scvan sweep dirived power supply> good luck

Posted on Jun 24, 2006

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jomaru
  • 337 Answers

SOURCE: Flickering Picture?

Your set might have a high voltage leak and that is the noise you hear when is showing the screen problem or even maybe an arking too ,either one is related to the high voltage and it can be dangerous,if you are familiar with tv service you can try to see where is arking and replace the part with an exact replacement but if the set has a leak you will not see it and is not safe to be close to it,if you are not too familiar be safe and call for assistance from a servicer.

Posted on Oct 27, 2006

  • 92 Answers

SOURCE: 42 inch LG Plasma TV - Lost picture

sounds like it may be a software upgrade

Posted on Oct 31, 2007

  • 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

  • 26 Answers

SOURCE: Plasma TV buzzing

If the adjustments on the power board are correct and if you are not at high altitude, the plasma display panel is defective. If the set is off warranty, it is not cost effective to replace the display panel. If it is off warranty, you should give the manufacturers Customer Relations a call. The phone number is usually right on the back of the tv. The manufacturer of the tv might make a warranty concession if they are concerned about their brand reputation. Some manufacturers find it less expensive to just switch brand names rather than make good on defective products. If all else fails, you might get some money back by selling the circuit boards on eBay.

Posted on Feb 20, 2008

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