20 Most Recent LG 50PC3D 50 in. Plasma Television - Page 7 Questions & Answers

Hello,

The reason your television burnt out is simply because there was so much heat in the area that needed ventilation.

It is obvious that there is a component in it that got burnt. So i will advice you open up the back of the television, then you try to view the boards, you will see the burnt component. it is most likely it is a capacitor.

Once you have seen the burnt component, replace it with a new one. If it is a capacitor, carefully, turn the board to the back and heat off the lead with a soldering iron, then you gently pull it off, then you replace it with a new one.

After doing this, screw back your television together, after properly connecting its cable back.

Ensure that you unplugged the television while doing this.

Take care

really depends on what went wrong does the tv come on at all? does it signal after attempting to turn on with a blinking light? it the tv wont come on it could be something critical if its turning on and than blinking the light it will signify to a repair technician which part has gone bad ad need to be replaced you should be able to call one and setup a home visit or take it in for a diagnostic rather cheap and they will let you you know the part and labor needed

Robb

Lg50PX4DEB Pcb Main 6871VMMZZ4A
They have one on ebay

Here is the link you can copy and paste in your internet address bar under a new tab:

http://cgi.ebay.ie/Lg50PX4DEB-Pcb-Main-6871VMMZZ4A-NEW_W0QQitemZ120521103258QQcmdZViewItemQQptZUK_AudioTVElectronics_Video_Televisions?hash=item1c0f9e179a

if you have a digital box and antenna it will Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/sean_54c3a3dc48a7773c

Sounds like a Z-SUS board. This board "erases" the picture between frames and prepares the screen for the next frame. If it goes out, your picture will be very, very dark. As for the reason... It's electronics, they just break. If you want to attempt the repair yourself, you will need to post the full service model number. ex: 50PC3D-UE.SUSLLJR Otherwise, we can't get you the correct part number for the Z-SUS. I hope this was helpful.

Hi,

As there is Static Noise from the Speaker and No Picture, i doubt a Firmware Problem. I have seen many Firmware Problem in LG Plasma's.If it is the firmware and cannot be loaded via USB service connector,it would have to be loaded via a laptop using a Cortez Probe.

This is No DIY and no Cheap Outcome :(

The other 2 Possibilities could be :-

1. There is a Failure in Video Display Board usually one on of the surface mounted chips.

2. Power Supply Boards ( Looks very Rare Possibility but could be there ).

If it is Firmware, i would Guess $ 180 - $250. If it is Video ( Display Control Board ), it would be more than $350 and if it is Power Supply Board, it would be more than $250.


Note - I am assuming that this is the same situation whether you would use DVD or VCR or Cable or Set Box or PS3 or Whatever.

Let me know, if needed further assistance.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

check the capacators on the main power board if they are not popped more than likely it is either the z or y sustain boards

This problem is usually caused due to failed sustain boards or a failed logic control board. A Physical check would be needed to confirm the source of the problem. The logic control board problem can be isolated easily though. Even though the picture is not functional try changing the channel, turning up/down the volume etc., If the above functions are operational you can be assured that this is a sustain board related issue. On most LG models I have seen it is usually the Y and Z sustain boards that go bad. Considering the Sustain boards hold high voltage circuits I would not recommend a DIY repair unless you have prior experience.

If there was a loud POP! sound when it turned off then you will have to replace a sustain board.

If there wasn't, then you're more likely facing either a power board or main board replacement. It can;t be said which one of the two based only on the described behavior - can be either.

Yes the set needs to be on for checking the voltages. It is recommended to have a service manual when trying to fix it. I have a membership with a site but I could not find it there. Hence you may have to get it from the link below(costs around 13$).
http://www.service-docs.com/store/search.php?searchstring=LG%2050PC3D&showresult=true&exp=&resultpage=&categories=&msg=&search=search.php
The first thing would be to look for obvious damages. Yes it can be the sustain boards but it can also be the power supply board as it is the first component to be affected during a power surge. Note that you have to unscrew the board from the chassis and and turn it over so that you can test the components as the solder-joint is where you have to test a component. You may find it helpful to have a multimeter capable of measuring capacitance(upto 10mF atleast) so that you can test them as well. Sometimes even the capacitors that go bad can be faulty and may read OL(over load) when you try to test them with a meter.

If you have any further questions feel free to let me know and I will be glad to help.

Sai.

HI.

Point your remote at a digital camera or cell phone cam, and press some buttons. the LED on the remote should light up on the screen, indicating that an IR command is being sent.

If the remote does not light up, then the problem is a broken remote. If it does light up, then I think your TV's IR receiver may be damaged.

Hope that was able to help you diagnose the problem!

The reason there is no picture is (95%, certainty) the loss of the high voltage. The high voltage is what produces the energy for the raster lines upon which the video is modulated.

Therefore, the video and deflection circuits may be working just fine but you cannot see because there is no high voltage to the picture tube.

Now, it is possible, also that power to the picture tube filaments has been lost, or that the power supply to the biasing voltages is defective or that the picture tube sockets are corroded, but the overwhelming cause among TV sets is loss of high voltage.

Refurbishing the high voltage will probably cost $250 or from anywhere you go. Even if you do it yourself and buy the parts wholesale you will not save a tremendous amount. So, unless you are very handy and know how to troubleshoot, solder, repair and test, I think you are better off finding a good shop for the repair.

Good luck!

The popping sound can come from a couple of different sources; some visible, others not.
You will need to pull the plug and remove the back panel of the set (assuming the warranty is dead, otherwise do NOT open the set).
You should probably give it an hour or two so there are no charged components left. Just take a look around the innards for anything that looks like 'debris.' Larger (and sometime smaller) capacitors that have ruptured often throw out bits of paper and foil. If nothing seems amiss like this, then continue.
The sounds can come from the following:
- A blown electrolytic capacitor - these are cylindrical devices and those most likely to fail this way will be 'cans' mounted 90 degrees to a circuit board. Look for a separate board with larger parts on it, this will be the power supply where most of this type of component are found. - A second supply is not uncommon but will be smaller and have smaller components - this one supplies the high voltage for the plasma tube. This too can suffer the same kind of failure. - A failed solder joint, most likely on the larger supply board. These may cause popping sounds once they start to fail if this occurs on paths handling fairly high currents.
If you can identify the point of failure, look for a printed or labeled sticker for the part number.
Now, replacing the main supply 'just because' can result in renewed failure if the high voltage board that derives its voltage from the main supply was bad and just caused the main supply to fail.
Without a couple of pieces of test equipment and the absence of any visible failed parts, you won't know which went first so I would recommend looking for both boards; not cheap but more secure.
If you are lucky, Jimmy's Parts has parted out some of these and you can save some money buying these 'recycled' boards:
Jimmy's
Good luck- do you miss your old TV yet?

are u using cablecard. unit has major issues when using card/\

are you using cable card? unit has major issues when using card

are u using cable card? unit has problems when using cable card

are u using cable card? this unit has major problems when using a cable card.

The short answer is yes, it is fixable. It won't be cheap though. The entire panel must be replaced.

The part number for this is: 6348Q-C049M with a cost of $2,417.11 with a core return refund of $750 which means that after you return the bad panel, you will be credited $750. The net cost for the part then becomes: $1667.11 plus shipping.

Hope this helps,
Dan

Should not be a problem.

VS/VA signals going to the Y-sustain are acting up. This is due to some poor semi-conductor devices from the power supply. Eventually the current will get too high and the entire video path will shut down to prevent further damage. If it under warranty take it back if not I can show how to fix this problem if you have some basic test equipment and some electronics background. Or get someone you know who is technically proficient and I'll show them what to test.

Get back too me on this, when you have some time....