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Anybody can HELP ? LG50pj350 sound but no picture !

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    #1

    Anybody can HELP ? LG50pj350 sound but no picture !

    Hi all. Have this LG50pj350 which screen has been replaced. I can hear the sound, switch channels but there is no picture. The screen is intact.
    Anybody may have a clue ?

    Thanks to anybody who will give an answer.

    Tags: None
    #2
    Re: Anybody can HELP ? LG50pj350 sound but no picture !

    Originally posted by vasce View Post
    Hi all. Have this LG50pj350 which screen has been replaced. I can hear the sound, switch channels but there is no picture. The screen is intact.
    Anybody may have a clue ?

    Thanks to anybody who will give an answer.

    At a guess I'd be thinking sustain board failure or maybe buffer failure. I might have a training guide.

    Tried searching the model and look for similar fault description?

    I only touch the Panasonic stuff but sound no picture is a fairly common fault description for the LG and Samsung stuff.

    I would also try turning the TV on in a dark room and see if you can notice the panel fire up at all. If it does it may be main board and there should be a test pattern feature in that guide to isolate the main board.
    Attached Files
    Last edited by tw2005; 10-13-2016, 03:24 AM.

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      #3
      Re: Anybody can HELP ? LG50pj350 sound but no picture !

      Advise do some research on google plus the forum. Read what you should add to a thread. Run the test patterns. Test voltages. Help us help you.
      Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

      https://www.facebook.com/Telford-Tel...7894576335359/

      Comment

        #4
        Re: Anybody can HELP ? LG50pj350 sound but no picture !

        Thank you mates for your answer. As I'm not an expert and don't have tools to test voltages, I'll follow your advises anyway and see if I can provide better information.
        Have a good day.

        Comment

          #5
          Re: Anybody can HELP ? LG50pj350 sound but no picture !

          BTW, who did the screen replacement? Used one, new one? Properly installed?
          Never stop learning
          Basic LCD TV and Monitor troubleshooting guides.
          http://www.badcaps.net/forum/showthr...956#post305956

          Voltage Regulator (LDO) testing:
          http://www.badcaps.net/forum/showthr...999#post300999

          Inverter testing using old CFL:
          http://www.badcaps.net/forum/showthr...er+testing+cfl

          Tear down pictures : Hit the ">" Show Albums and stories" on the left side
          http://s807.photobucket.com/user/budm/library/

          TV Factory reset codes listing:
          http://www.badcaps.net/forum/showthread.php?t=24809

          Comment

            #6
            Re: Anybody can HELP ? LG50pj350 sound but no picture !

            Hi BUDM. I bought the screen from a technician and replaced it by myself. I simply reinstalled like the previous one was. The replacement was a used one but has no cracks. I will check all the connections anyway.
            Cheers

            Comment

              #7
              Re: Anybody can HELP ? LG50pj350 sound but no picture !

              Hi again.
              Here's some pics attached
              Don't know if someone can see anything that's wrong ?
              Thanks.
              Attached Files

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