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LG 42LV4400 no picture, red light, no response to remote controls.

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    LG 42LV4400 no picture, red light, no response to remote controls.

    Good Evening,

    I plug in the TV and get the red light on the front but no picture. I tried using the remote with no change. I am getting the 5vdc start up. I am not getting the 12vdc. I checked the 2 fuses on the main board, I am getting the 5vdc on the right fuse, nothing on either side of the left fuse using chassis ground. I have changed U18. Any ideas???

    #2
    Re: LG 42LV4400 no picture, red light, no response to remote controls.

    post the pictures of the boards so we can see what we are looking at.
    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


      #3
      Re: LG 42LV4400 no picture, red light, no response to remote controls.

      I had this same exact issue a few months ago. Replaced U18, nogo still red light standby. Replaced mainboard due to main MediaTEK processor was faulty.
      Did I leave the soldering iron on?

      Comment


        #4
        Re: LG 42LV4400 no picture, red light, no response to remote controls.

        here are the pics
        Attached Files

        Comment


          #5
          Re: LG 42LV4400 no picture, red light, no response to remote controls.

          Power supply board pictures, any labels on the connectors of the power supply? I think one of the fuse does not show the voltage is due to the 12v is not switched on to supply the 12V to that fuse.
          Last edited by budm; 10-18-2013, 08:26 PM.
          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: LG 42LV4400 no picture, red light, no response to remote controls.

            here are some quick pics. I will try to take better pics later.

            thanks
            Attached Files

            Comment

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