Question about LG 50PX1D 50 in. Plasma Television

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Picture went dark

The picture on my 50PX1D went dark, barely visible. Sound is unchanged. Is there a solution?

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  • 208 Answers

This problem can be a bad YSUS or bad ZSUS and I recommend replacing both. The part #s are 6871QYH039B and 6871QZH044C. These parts can be found at Andrews or Vance Baldwin.

Posted on Jun 23, 2008

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One of the boards went bad. The sound you heard is either of a capacitor or an IC. It might be a bad Sustain board. Look at the boards you may find a bad chip with a hole in the middle or a capacitor with blister on the top.

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Nov 08, 2009 | LG 50PX1D 50 in. Plasma Television

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As I was watching TV last night, my 50" LG Plasma TV 50PX1D, and it made 3 loud "popping" sound, and you can barely see the images. The picture is not jumping & the color doesn't appear to be fading in...


Either X,Y, or Z-boards seem to have developed a problem, when this happens it results in a 'sound-no-picture' condition. If its under warranty take it back, if not have your local tv repair center fix it for you....

Oct 18, 2009 | LG 50PX1D 50 in. Plasma Television

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Red screen vague picture sound is excellend


Well it takes a good Y and Z to make a good picture.

Slow turn-on sounds like power supply problem to me, although I've worked more on LCD sets than plasma, so I could be wrong.

Here's an ebay link that tells how to test your Z, and coincidentally has a Z board for sale.

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=350088827899

Oct 16, 2009 | LG 50PX1D 50 in. Plasma Television

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Hi you need the y-sus board. You May find it @ partstore.com Thanks.

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Z-Sustain PCB will cure it.

It is inside the TV, on the Right Hand Side.

www.chsinteractive.co.uk or Google for a replacement.

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1 Answer

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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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1 Answer

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A click means the power to the LCD has been shut off. Try resetting the TV, pull the AC plug, wait a minute then replug.

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