Question about LG 42PC3D 42 in. Plasma Television

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LG 42PC3DV sound but no picture - less than 4 yrs. old

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5 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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SOURCE: LG 42pc3dv-ud

Yes you need to replace the board LG 6871QYH048B. The board has a short. Check the fuses and one of them should have no continuity
because it is open.

Replace that board and problem solved

Posted on Aug 03, 2009

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daniel719
  • 240 Answers

SOURCE: i have sound but no pic

replace display board.
if unit is under warenty
LG is very good at sending out replacment boards.

Posted on Jan 15, 2009

  • 541 Answers

SOURCE: i have a lg 42pc3dv plasma tv. it made a loud pop

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.

Posted on Oct 24, 2009

KingDWS
  • 1606 Answers

SOURCE: lg plasma t.v. has sound, but no picture

That usually indicates that the power section driver board (one of them) has failed on you.There are three boards each of which can fail and cause this. Usually it is the Y or Z board.

Bad news is to know which one you need to be able to test inside the tv. Good news is the boards are fairly cheap around $35. So you probably will have to take it to a repair shop to get it fixed. Unless they really try to do a number on you as far as prices it is worth fixing. However be a bit cautious here and get and estimate and find the price of a new tv. If the markup on the parts and the labor gets close to the new tv cost then you will need to decide if it is worth fxing or replacing. Ie used tv or new tv with warrenty.

Posted on May 13, 2010

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2 Answers

Lg LCD tv less than 2 yrs old has sound but no picture. What could be the problem? power supply, main board, etc??


Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electro-medical.blogspot.com/
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

May 18, 2016 | LG Televison & Video

1 Answer

42PC3DV LG TV Sound/no picture


Hi Lindsey

Try resolder the board for potential cold solder specially @ video stage.

Jan 19, 2014 | LG Televison & Video

1 Answer

I have a LG 42pc3dv with no picture just sound. I have this tv over 3 years, other people experienced the same problem, some of them mentioned the Y sustain board. Is this an easy fix.


Check the fuse on the Z-sustain module. The module all the way to the right (looking from the back) If blown (and before the set went out there was a loud pop) you need to change the IC on the Z-sustain part number STK 795-820 or 821 and the fuse. If you don't want to bother unsoldering and soldering back this part and you know the fuse is blown then replace the Z-sustain module. Do a google, ebay, or shopjimmy.com search with the model number for price and availibility.

Jun 16, 2011 | LG 42PC3DV 42 in. Plasma EDTV

1 Answer

I have sound but no picture lg42inch,(42pc3dv-uo)model,i try unpluging it for 30second turn it off and on nothing work.


if you still have the red stand by light then you power supply is ok, next you need to remove the back and look for a blown fuse on your y-sus board that will be found on your left,.

Apr 24, 2011 | LG 42PC3DV 42 in. Plasma EDTV

1 Answer

Have picture but no sound?


revisar con el manual las funciones de sonido o bien desde el menu del tele y buscar configuraciones de sonido por ejemplo activacion de audio

Oct 05, 2010 | LG 42PC3DV 42 in. Plasma EDTV

1 Answer

I have a lg 42pc3dv plasma tv. it made a loud pop


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.

Oct 24, 2009 | LG 42PC3D 42 in. Plasma Television

1 Answer

LG 42pc3dv-ud


Yes you need to replace the board LG 6871QYH048B. The board has a short. Check the fuses and one of them should have no continuity
because it is open.

Replace that board and problem solved

Aug 25, 2008 | LG 42PC3DV 42 in. Plasma EDTV

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