Lg 47lm860v 3d tv- no picture

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  • Longon
    Longon
    • Jul 2025
    • 7
    • United Kingdom
    #1

    Lg 47lm860v 3d tv- no picture

    Re: LG 47 LM8600 - No Video Hi all.....
    I probably need putting against a wall and deserve a stoning for my stupidity.............. I have a LG which after following information with problems with T-con and lines on screen covered the pins which affected the display and had it sorted...until!!! Lets get it over and done with, I managed to get a little sidetracked and forgot that the tv remained powered up and I replaced the LVDS which to my horror then left me with no picture whatsoever. The backlight remains ok but as mentioned no picture and probably managed to fry the T-con or have I? Perhaps there may be something a little more simple or not so. Where do I go from here? Can you assist in any way? or as suspected into my pocket to find a replacement which is not where I want to go as not the most inexpensive board to say the least.
    OK so now its out there let the stoning begin.....
    Many thanks guys and stay safe(safer than me anyhow)
    Look forward to your assistance
    Regards
    Long
    Tags: None
    • Davi.p
      Hobbist Tech
      • Sep 2009
      • 4363
      • Italy - Milan
      #2
      Ok, i read in the other topic that the owner of topic has another problem, so you have or had lines on screen, it depends on how lines are on what type of issue you have, now, have you still some lines or no image at all? if no image at all then probably you have the same as the other topic, thus bad cpu or RAM soldering..
      aside from the light reflow (half reflow) i suggest you the panel test..
      disconnect main board from tcon, place a jumper wire from PSB 12v out to tcon input fuse , to directly feed power to the lcd,
      then switch on current, if the screen makes an BWRGB test (full screen colours) without issue then.main board is at fault, otherwise it can be a fault of soldering of one BGA of tcon..
      Last edited by Davi.p; 08-22-2025, 03:54 PM.

        Comment

        • lotas
          Badcaps Legend
          • Jan 2016
          • 4649
          • Russia
          #3
          If there was an image and when connecting the LVDS cable under voltage and installing the cable with a skew, then the fuse could have burned out, but I do not see it at the T-CON input, it may be at the LVDS output of the motherboard, check the voltage on this capacitor, it should be 12v.
          Attached Files

            Comment

            • bohaboha
              Badcaps Legend
              • Nov 2012
              • 1015
              • sweden
              #4
              Originally posted by Longon
              Re: LG 47 LM8600 - No Video Hi all.....
              I probably need putting against a wall and deserve a stoning for my stupidity.............. I have a LG which after following information with problems with T-con and lines on screen covered the pins which affected the display and had it sorted...until!!! Lets get it over and done with, I managed to get a little sidetracked and forgot that the tv remained powered up and I replaced the LVDS which to my horror then left me with no picture whatsoever. The backlight remains ok but as mentioned no picture and probably managed to fry the T-con or have I? Perhaps there may be something a little more simple or not so. Where do I go from here? Can you assist in any way? or as suspected into my pocket to find a replacement which is not where I want to go as not the most inexpensive board to say the least.
              OK so now its out there let the stoning begin.....
              Many thanks guys and stay safe(safer than me anyhow)
              Look forward to your assistance
              Regards
              Long
              HELLO SOME PICTURES DON'T HURT

                Comment

                • Davi.p
                  Hobbist Tech
                  • Sep 2009
                  • 4363
                  • Italy - Milan
                  #5
                  PICS
                  https://www.badcaps.net/forum/troubl...m8600-no-video
                  Last edited by Davi.p; 08-22-2025, 05:37 PM.

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