Question about LG 50PX4D 50 in. Plasma Television

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My tv has audio but no image. Upon opening I have noticed there's a capacitor (d153) on the power board which is surrounded in brown residue (appears to be blown). There are also 3 empty connectors on various boards, P1, P101 and P806 are all empty. P806 appears to be a test point, but P1 and P101 look like they should be connected to something. The tv turns on and stays on everytime so I'm not entirely sure there's something wrong with the power board, but the (blown?) capacitor is worrying. Main problem is the 2 missing connectors. Any ideas?

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  • marionbagget Mar 13, 2011

    The brown residue is not necessarily a blown capacitor. Adhesive is applied to the capacitors to hold them in place to be wave soldered. Over time the adhesive turns brown and spreads.
    The 'missing connectors' is because the boards are designed for many features to be added depending on the tv it's used in, country voltages/hertz and function requirements.

  • dandadog Mar 13, 2011

    Right ok, so nothing's missing. That's a relief.

    In that case, my next suspect is either the Y-sus or X-sus. Best get a voltmeter and do some prodding. Thanks.

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  • 19 Answers

Tv sound is on so not a problem with power board u may have problem with capacitor of disply or EHT or may be dry at any one capacitor

Posted on May 03, 2017

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SOURCE: 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

Posted on Dec 29, 2008

  • 1 Answer

SOURCE: LG 42PX4MVH PLASMA TV - Sound but no picture.

I have the same issue with my LG 42PC3DVA and I narrowed it down to the Y SUS board. After a little research there are a few items that are prone to go. The ceramic fuses (as you found), sometimes the capacitors on the Y SUS, Z SUS, and power supply go along with them You can tell because thy will be bulged at the top instead of flat. I replaced a few of my capacitors - they are only $0.89 each so it was MUCH cheaper than a board.

The other thing that is common on the Y SUS in particular are the FETs (also called MOSFET). They can be replaced if you are good with a soldering gun but they are static sensitive so be grounded. They are also a bit tricky to test so you may want to do some research on how to determine if this is the issue... or you can just replace the whole board.

Posted on Oct 28, 2009

itvrepair
  • 28 Answers

SOURCE: my lg plasma tv stays on standby

is you already change the power board,is possible
your y board is out...is a big board on the left side of the tv

Posted on May 19, 2010

  • 25 Answers

SOURCE: PLASMA TV PROBLEM

The problem with this set, is defective YSUS board, to avoid future same problem, you must change the following boards: YSUS, ZSUS & Control.
Verify with LG if your serial Number is included within
lots production that were recalled by this design defect

Posted on May 28, 2010

Testimonial: "I'll try to contact LG dealers. Very hank you sir"

  • 3 Answers

SOURCE: Where can I buy a new power board for my Plasma LG

I had the same problem and opted to take the board out and replace the caps. They were all the same capacitance. Cost me $6.61 for 10 new caps (needed 9, 10 was cheaper). If you can solder, watch the capacitor videos on YouTube and give it a go.
There is a replacement for the original. You can try http://www.partstore.com/Model/LG+Electronics+Incorporated/LG+Electronics%2fZenith/50PG20.aspx?p=1&z=50&c=6e080ee60c7dbeec930c9d72f2d3d6f7&bs=Category&bd=Asc&ms=Category&md=Asc&k=&on=
and http://www.shopjimmy.com/lg-eay39190301-power-supply.htm


Good luck

Posted on Aug 20, 2010

Testimonial: "This fix worked perfectly! My TV was repaired for under $10."

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Good day!!!




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Just follow this instruction to fix your TV..


1. Open the back cover of your TV.
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Good day!!!!


That problem is usually cause of faulty capacitors on the power supply board..

Just follow this instruction to fix your TV..

1. Open the back cover of your TV.
2. Look at the power supply board..Its normally connected to the power cord..
3. After that,,try to look at the actual image of capacitors if it is bulged on the top so that you can easily determine the bad capacitors..
4. After that,,try to replaced the bad capacitors using soldering iron and soldering lead..replaced the capacitors only with the same type ratings and value..
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