Question about LG 42PQ30 42 in. Plasma TV

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I have a 42 inch 42pq30 plasma tv where theres no picture or video showing up but i can hear the sounds

When you turn on the tv you can hear everything just fine but the picture is so dark you can barely if at all see the outlines of everything

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6ya6ya
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Posted on Jan 02, 2017

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  • 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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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

  • 2 Answers

SOURCE: 42 inch LG Plasma TV - Lost picture

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

Posted on Jan 30, 2009

albertv29
  • 87 Answers

SOURCE: screen just suddenly went dark!

If you can see a faint picture with streaking you most likley have a defective Zsus module Part Number 6871QZH036B Description PWB(PCB) ASSEMBLY,DI List $226.14 Please rate my info

Posted on Feb 20, 2009

  • 20 Answers

SOURCE: 42 LG Plasma picture distorted and flickering

replace the control module.

Posted on Mar 11, 2009

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I have an lg 42pq30 plasma tv the main input board went bad causing no audio.. i replaced the board with same part number .. it now has sound but the picture at the right is off the screen good 20% of...


You must use a usb memory stick to copy data values from the old board to the new board. First you have to put the old board back in, insert the stick then follow prompts to copy register values to the memory stick. Then put the new one back in and load the values back onto the new. I would definitely have a certified tech do this process. You don't want to make a mistake with the old board values.

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1 Answer

I have an lg 42pq30 the main input board lost sound so i replaced it with same part number.. got sound back but the video runs off the right side of screen...any help thanks in advance


you need the set up remote, part number 105-301-m . in start mode press tools button, rt click until your model shows up. the main board is for several size screens. HIT enter when you see your model number.
Please post feedback

Feb 18, 2011 | LG 42PQ30 42 in. Plasma TV

1 Answer

Picture takes split second to focus


That normal,this tv a year or more right?Mornal progressing the aging of the tv.

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You can get the manual on link below. Go to support then look under documents on right side to download manual.

http://www.lge.com/us/tv-audio-video/televisions/LG-plasma-tv-42PQ30.jsp

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Most likely your Y Sustain panel has gone bad. I would have a qualified service center evaluate it to be sure.

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

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If the Video (Picture/Pix) is gone but you can hear the Audio (sound), then it could mean the YSUS PCB Assembly is gone/kaput/finish. Can replace the PCB, not repair the PCB due to timing circuitry involve. Cost maybe roughly $500 depending where you located. The PCB is located on the left hand side of your TV when you are facing the back (Back open). Might find 3-4 brown flex membrane connecting to the plasma panel. The PCB has a silver or black aluminum heatsink (big) on it.
Good Luck.

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1 Answer

42 inch LG Plasma TV - Lost picture


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