Question about LG 50PX1D 50 in. Plasma Television

3 Answers

50PX1D has sound, no picture at all

My tivi has sound but no picture. It is LG 50PX1D. I'm EE but I never repair this model before. How can I fix this problem?

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  • Ben Vu Feb 21, 2008

    Hi ginko,

    Where is the lamp location? How many lamp does this tv have?

    Ben

  • Ben Vu Feb 21, 2008

    My tv is plasma tv. Where is the lamp locating? How many lamp does it has?

  • Ben Vu Feb 21, 2008

    Hi Ginko,

    Do you mean lamp is 2 buffer boards which locating in the left side from behide?

    Ben

  • Ben Vu Feb 21, 2008

    I bought the service manual already. On the part number pages. There no part likes lamp name or the one you give me from the link.

    Ben

  • Ben Vu Feb 21, 2008

    Do you mean it is loosing contact of the connectors from the buffer boards? Can it be the YSUS or XSUS board problem?

    Ben

  • Ben Vu Feb 22, 2008

    I checked all voltages from both YSus & XSus board that fine all. I resondering all connectors too. It's still not working. Let me buy the capacitor testor to check the capacitors.

    Ben

  • Ben Vu Feb 24, 2008

    Hi Ginko,
    Do you know how much for both YSUS and ZSUS board?
    Ben

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3 Answers

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  • LG Master
  • 19,396 Answers

As posted already it should be the rear lamp, unless is an internal contact. Open the tv, check all display lamp contacts, then eventually replace the lamp. It costs around $100.
You can try ordering it from LG or buy from some other company, like this one for US .
If you need further help please ask.
If you are satisfied with our solutions please rate us.

Many thanks

Posted on Feb 21, 2008

  • 9 more comments 
  • Ginko
    Ginko Feb 21, 2008

    i forgot, here is LG website, in case you need to contact them.



    http://www.lge.com/

  • Ginko
    Ginko Feb 21, 2008

    And here comes LG contact and toll free number for TV support in USA:



    LG U.S.A.

    1000 Sylvan Avenue
    Englewood Cliffs, NJ 07632


    Toll Free: (800) 243-0000
    Email: To send an email, click here.

  • Ginko
    Ginko Feb 21, 2008

    Do not forget to rate us.

    Many thanks

  • Ginko
    Ginko Feb 21, 2008

    Try to download service manual from here

    http://us.lge.com/support/download/searc...

    I couldnt put the right model number

  • Ginko
    Ginko Feb 21, 2008

    Here is a website that has the service manual for sale. I didnt find any free schematics or service manual on Internet. They sell it for $11.99

  • Ginko
    Ginko Feb 21, 2008

    I uploaded the service manual for 50px10c that is similar to yours. You find explosion and part list at pages 14 and 15.

    At list I saved you $12.Click on the linked text above to download.



    don't forget to rate.



    bye

  • Ginko
    Ginko Feb 21, 2008

    I will remove the link for the manual in 24 hours, download it.

  • Ginko
    Ginko Feb 21, 2008

    There is no lamp to change in yours one. It was confused with the rear projection model. A plasma tv has few parts. It can be one of the contacts with the screen.

  • Ginko
    Ginko Feb 21, 2008

    I dont know on your tv, I fix computer screens including plasma. Usually if it is the YSUS or XSUS board the tv turns off. Try checking their connections.

  • Ginko
    Ginko Feb 21, 2008

    if it is the YSUS or XSUS board you can replace the xsus
    and ysus boards with one of those kits, you do not replace the controller board .

    But I would not be able to diagnose it from here. Before buying part try an essential re assembling

  • Ginko
    Ginko Feb 24, 2008

    Each one of them ranges from $70 to $200, depending from brand and model. LG costs around $120/140 For example this is an y sus on ebay.

    I suggest you to buy from LG or from an authorized reseller as on Ebay is easy to buy wrong one.



    If all this had been helpful, please rate my solutions. Rating is important for us.



    Many thanks.

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  • 317 Answers

Check to make sure that the video cable is not bad, and that the audio and video plugs are on the same input, channel, as the complex diagrams can sometime fool you. Also, try a different video source, such as a video game console, or DVD player.

Posted on Feb 21, 2008

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  • Master
  • 4,402 Answers

Replace the lamp

Posted on Feb 21, 2008

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