Question about LG RU-42PX10 42 in. HD-Ready Plasma Television

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Where are the fuses on a 42" lg plasma flat screen? We need to check and see if a fuse is blown that controls the picture...it made a loud click and then went to black. there is sound but no picture and we have to check the fuses.

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It has power section in side your tv .We called it power adapter

Posted on Sep 11, 2009

  • Sazeed Computer
    Sazeed Computer Sep 11, 2009

    it has power section in side your tv .We called it power adapter

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1 Answer

LG 42" Plasma no picture but has sound


Before replacing a blown fuse, always check for short circuit in an analogue multimeter. Otherwise, you are likely to cause more damage to the board.

Aug 02, 2012 | 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 a LG plasma 42PC1DG, watching tv loud pop then no picture but still have sound, left tv unplugged for a while still no picture?


probably the pop was a fuse blowing inside that only controls the lamp should be an easy fix but open the tv at your own risk

Dec 06, 2010 | LG 42PC1D 42 in. Plasma Television

1 Answer

I have a 42" lg plamsa tv the screen went black and still had sound.. found a blown fuse on the board to the right of the power board, when i replaced the fuse,it will power up and then 5 seconds later i...


The fuse you have replaced would have been on the sustain board, now that it clicks indicates a problem either with the control board or the sustain board. You would need to disconnect the connector from the power board to the Y-sustain board (left of power board) to check if the Vs & Va voltages are present, if so then the power supply will be working ok & the problem will be with the previously mention boards. There is the possibility that the plasma display screen could also be faulty.

Nov 06, 2009 | LG RU-42PX10 42 in. HD-Ready Plasma...

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

2 Answers

Loud pop


If there was a loud pop then it would appaer a fuse has probably blown either on power supply especially if there is no indicator light showing. If you are getting the red stand by light then possibly a different fuse on the sustain board has blown. You would need to remove the rear cover & check any of the fuses. Most likely if they have blown something more serious has occured to cause & replacing the fuse will result in it blowing straight away.

Jul 26, 2009 | LG 42PX5D 42 in. Plasma HDTV

1 Answer

No Picture on LG 42PX5D


You will have either a fault with the Y-Sustain board (this I would assume from your description is the board you changed the fuses on) or the buffer board which is the long panel to the left of this board. It is probable one of the drive ICs on this board has blown & a replacement board is the best solution.

Jun 26, 2009 | LG 42PX5D 42 in. Plasma HDTV

1 Answer

Loud pop Blank screen 42 inch Viore Plasma


Unfortunately, that board is the inverter board. And for this model the inverter board is only supplied with the the PDP panel. The panel is quite expensive, here's a link if needed:

LG 42PX5D Replacement Part PDP Plasma Display Panel

Dec 26, 2008 | LG 42PX5D 42 in. Plasma HDTV

1 Answer

LG 42INCH PLASMA TV BLANK SCREEN


Open the back cover and check the fuses on Y Sus Board and X Sus Board. If you can find a blown fuse, just replace that board and your problem will be fixed.

Feb 23, 2008 | LG RU-42PX10 42 in. HD-Ready Plasma...

34 Answers

42 inch LG Plasma TV - Lost picture


Our LG 50" plasma tv screen went black after a popping noise but still had sound, after great diliberations decided to take the back off and have a peek!
We unplugged the tv and tested the fuses (there were three we could see) one had blown, the one on the left as you look at the back of the tv it also has one above it. We wrote the code/seriel number down and took the fuse to the electrical wholesalers Maplin and bought a pack of 10 fuses for £1.29 replaced the fuse in the tv and everything now fine!!!!!!
Hope this might be of use to anyone whose lost the picture after a loud popping/snacking noise but still has sound.

Dec 31, 2007 | LG RU-42PX10 42 in. HD-Ready Plasma...

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