Question about LG 42PC3D 42 in. Plasma Television

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Lg plasma 42PC3D no picture with sound

While the TV was on, I heard a clicking sound and the picture went out but sound was still there. I found blown fuse on ZSUS terminal board and replaced it. It didn't fix the problem and TV is now turning off by itself right after pressing the on button.

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  • Anonymous Apr 15, 2008

    tv shutting off by itself and turning back on after i turn on.

  • Anonymous Dec 18, 2008

    the remote is not working to turn picture on sometimes i hear the sound

  • fireball1331 May 03, 2009

    Exact same problem but with 50" plasma


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I know you already replaced the board, this is for future searchers. If you heard a popping sound, then the picture went out, there is a 32 pin Sanyo module that goes bad on the board. That's probably what caused the fuse to blow. Replace the module, then replace the fuse. The module is less than half the cost of a used board. Since this was a popular model TV, there are lots of replacement boards on the used market.

Posted on Dec 31, 2010

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Check for blown fuses on the rest of the boards as well, if there's a blown fuse on any of the bds the power supply will turn itself off if it doesn't sense a load. hope this helps.

Posted on Mar 28, 2008

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I fixed it by replacing the ZSUS terminal board

Posted on Apr 28, 2008

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Do you have the part number of the board. Mine just did this as well

Posted on Jul 15, 2009

I fixed it by replacing the zsus terminal board.

Posted on Apr 28, 2008

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1 Answer

I have a RCA Plasma TV p42whd33. was watching tv heard a pop and the screen went blank. How do i fix this


This sounds alot like the same issue I had with my HP 42 inch plasma. Many plasmas had an issue with failures on the YSUS and ZSUS printed curcuit boards.

If you are willing and able to do some dissasemply yourself, open the TV and see if it uses these cards...if so then look at the solutions listed for the HP PL4260N TV issue.

I found the fuse blown on my YSUS board, I removed it and had it repaired by coppel TV..if you find a board that is bad, chances are someone on EBAY repairs them or swaps them out...mine cost $75 to repair and I was back in business...TV works fine again now that I had the board repaired.

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Picture went black but you could still hear the movie


Hi- My PL4260N stopped working after about three years, the audio worked but no video at all. The TV worked fine until one day...no more picture.
I found out that the YSUS and ZSUS boards in the TC fail alot...BUT you can get new or repaired ones off of EBAY...
First check for failed components (burned, loose, bulging, etc.) if nothing obvious is failed then check the fuses on the YSUS, ZSUS, and power supply boards...usually if a board has a blown fuse the board needs to be replaced...get the part number and search it in Google and eBay and you will find options for replace/repair.
Mine had a blown fuse on the YSUS board...I got it fixed for $75 through coppell TV (they are on Ebay)....
Now my TV works fine again!
Good luck.

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Hello,
The T-con board, the board that sit right in the middle of the center LCD panel . That board is dying. try websites like shopjimmy.com, Ebay.com to buy a refurbish T-con board for replacement.

Thanks for using fixya

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1 Answer

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Looking at it from the back, the board on the left is the ysus. You should see a big red cable coming from the power supply board in the middle of the set going to the ysus. Near the red cable plug on the ysus should be a fuse. Most likely the fuse has blown. If it is you need a ysus PCB. Check out encompassparts.com. If you get a new board be sure to set all the controls on the new board to match the old board. If you don't you will have little sparkles all over the screen when it comes back on. I hope this helps. You may want to check all fuses on the power supply and the zsus which is on the right side of the set. I have seen both the ysus and zsus be bad together. Good luck and thanks.

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1 Answer

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I assume this is a plasma TV? You will have a fuse blown on either the Y or Z sutain board, there is also a possibility one of the driver IC's has blown on the buffer board, this will shut down the screen & leave the audio working normally. You can check these boards which sit on the left & right hand sides of the screen.

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check y-sus board(top left with 2 white fuse)
check z-sus board(right small board with 2 white fuse)-view from back
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There are fuses on each board, they're ceramic, so you will not be able to see if they are blown physically, you will need a multimeter. Only one is normally blown, that will be the board you will need to replace

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