Lg 42LM615T and 47LE5900

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  • mintminty59
    Member
    • May 2014
    • 17
    • wales
    #1

    Lg 42LM615T and 47LE5900

    Just wanted to put the feelers out there, I have been seeing a lot of LG LCD TV;s recently with very serious failure of the buffer boards that connect the TCON to the LCD Panel (the 2 strip boards that run along the bottom). I think its a very poor design they glued the ribbon cables onto the PCB. The 2 panels in this case are perfect working order but I am unable to repair both TV due to the damage on the PCB boards. I have attached pics so you can see what I mean. On the 47 Inch the damage was that bad it actually melted the connector and ribbon cable completely.
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    • mintminty59
      Member
      • May 2014
      • 17
      • wales
      #2
      Re: Lg 42LM615T and 47LE5900

      Is there any possible way to get these going again

        Comment

        • Alastair E
          Chief Womble
          • Mar 2013
          • 1963
          • U.K.
          #3
          Re: Lg 42LM615T and 47LE5900

          Thats probably why they put these things--At the bottom--so when someone cleans 'em with too much cleaner/tips summit on 'em, this fault happens....

          They are in the business of Selling Tellies after all--Making 'em last--to them, Aint economic good sense!

          Ive seen lots of similar stuff with these new/sub 3 year old things, Made to Fail, cheap parts, stressed to the limits--what do you expect!

          Planned Obsolescence in action....

          I very much doubt anything can be done with those, may be worth cleaning the deposits off though, re-testing....
          TELEFIX

          How PLASMA SCREENS WORK, X-SUS and Y-SUS what they do--
          http://www.irf.com/technical-info/appnotes/an-1088.pdf
          PLEASE DO NOT EMAIL ME PRIVATELY FOR REPAIR ADVICE. QUESTIONS BELONG ON THE FORUM!

            Comment

            • mintminty59
              Member
              • May 2014
              • 17
              • wales
              #4
              Re: Lg 42LM615T and 47LE5900

              Thanks Alastair looks like we both in swansea. I am determined to find a way to get these going as there good sets when working. Sadly I think the PCB are toast Damage just to great to salvage them. On the 47 Inch it actually burned the ribbon cable in half inside the conector.

              I am more upset about they glued the LCD panel ribbons on instead of using a connector so you can not replace the 2 boards
              Last edited by mintminty59; 05-08-2014, 05:51 AM.

                Comment

                • truep
                  Badcaps Veteran
                  • Aug 2010
                  • 373
                  • USA
                  #5
                  Re: Lg 42LM615T and 47LE5900

                  Yep, it's damage caused by liquid, usually someone trying to clean the screen. They don't follow the manual as to how to clean the screen.

                    Comment

                    • mintminty59
                      Member
                      • May 2014
                      • 17
                      • wales
                      #6
                      Re: Lg 42LM615T and 47LE5900

                      That might be the case, but I thikn there is more to it than that. To me it looks like a heavy build up of flux and the parts have corroded or reacted with metal case around the panel. The Ribbon cable actually burned in half and burned the connector. LG seem to think its a potential problem as they have escelated my concerns. That small bit of damage has rendered the units write offs. To me its an abvious design flaw.

                        Comment

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