Question about LG 42PX5D 42 in. Plasma HDTV

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LG Plasma/TV 50PX5D

Very happily watching TV. Heard a loud pop and the TV went dead. We shut it down and waited a but. Turned it back on and all we get is audio -- black screen. We're just out of the 2 year warranty. Is there any kind of troubleshooting we could try before we call out the professionals????

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  • glennlong Jul 01, 2008

    I have the same exact problem. Loud pop, no picture except during really bright scenes then it looks like a smear across the bright portion. Audio and channel controls all work. Problem is independent of input source. Also slightly beyond the two years warranty. The tech who came to my place quoted $750 to start. He said that the zsus and ysus boards needs to be replaced, but other things could have been fried. Is there any credence to this or am I being taken for a ride? I'm debating since another $750 and I can get a fairly good non 1080p panel.

  • leo4 Jul 11, 2008

    Same exact proble. Called LG Support. Explained problem in a very nice tone and told them that noticed it seems to be a common problem. Told them that reason I bought LG was they had a 2-year warranty, which caused me to believe they were confident in quality of their products since most manufacturers only do 1-year. That's also why I didn't do extended warranty. I asked them if they could please help in any way considering I was only 4 months out of warranty and was a "big LG fan." They have agreed to cover it under warranty- parts and labor included.

    I am pleased with their response and professionalism. I think that the tone you take with them will have a lot to do with their response. Good luck.

  • Anonymous Jul 23, 2008

    My LG 50px5d was purchased 3/06. Same issue - loud pop noise & screen went blank. Called customer service immediatly & they offered to pay parts & I pay labor.... That sucks - just out of warranty. I am calling back & nicely seeing if they will pay 100%. I will let you know..

  • mymovico Aug 28, 2008

    Same problem happened to me, Video is gone, How expensive is this going to cost, the tv cost is almost $2000 but we do have it for less than 2 years, So is it still under a warranty?



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Likely blew a cap or diode in the power supply ,
if you stay out of it then it will cost less to service,
techs hate to work on a mess of someone else's

Posted on Jun 10, 2008


The technician that quoted you is right on point. I service these televisions and that is exactly what happens. A lot of times we can replace the Y drive and Z Sustain board, but sometimes it will knock out the upper and or lower drive boards. The y drive and z sustain boards total about $400 in parts and after labor, a trip charge to the home, labor and tax, you would spend about $700-$800. Add about $100 each for the upper and lower drive boards.

A popped cap or diode in the power supply would result in a dead set. However, if you hear audio still, it is going to be those two boards and possibly more.

Posted on Jul 31, 2008


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