Please Help with LG 55LS4500. DARK SHADOW ON SCREEN

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  • budm
    Badcaps Legend
    • Feb 2010
    • 40746
    • USA

    #21
    Re: Please Help with LG 55LS4500. DARK SHADOW ON SCREEN

    Once you get the LCD panel, then I would search the net for 'LED BACKLIGHTS for xxxx' that model to see what comes up.
    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

    • Cgreen
      Member
      • Aug 2016
      • 22
      • U.S.

      #22
      Re: Please Help with LG 55LS4500. DARK SHADOW ON SCREEN

      Thanks, you all have been a big help. I'll give it a go and see what I find. I need to devise a way to carefully lift a 55in. Piece of thin glass without it flexing to the point of breaking. The video the guy just lifted it off, but mine will be quite a bit larger.

      Comment

      • Th3_uN1Qu3
        Believe in
        • Jul 2010
        • 6031
        • Romania

        #23
        Re: Please Help with LG 55LS4500. DARK SHADOW ON SCREEN

        It is no more complicated than swapping out a CCFL lamp in the older CCFL LCD TVs. A major pain in the behind to be honest, but take it slow and you're going to come out victorious. Just be careful when you lift the TFT screen itself, as that's a BIG sheet of glass right there.
        Originally posted by PeteS in CA
        Remember that by the time consequences of a short-sighted decision are experienced, the idiot who made the bad decision may have already been promoted or moved on to a better job at another company.
        A working TV? How boring!

        Comment

        • mmartell
          Badcaps Legend
          • Oct 2013
          • 3189
          • Canada

          #24
          Re: Please Help with LG 55LS4500. DARK SHADOW ON SCREEN

          You can do this is reverse by putting the set FACE DOWN and lifting the backlight assembly off the screen instead of the other way round.

          Comment

          • Th3_uN1Qu3
            Believe in
            • Jul 2010
            • 6031
            • Romania

            #25
            Re: Please Help with LG 55LS4500. DARK SHADOW ON SCREEN

            Yeah, just make sure you clean up beforehand, you don't want any dust getting into the panel.
            Originally posted by PeteS in CA
            Remember that by the time consequences of a short-sighted decision are experienced, the idiot who made the bad decision may have already been promoted or moved on to a better job at another company.
            A working TV? How boring!

            Comment

            • mmartell
              Badcaps Legend
              • Oct 2013
              • 3189
              • Canada

              #26
              Re: Please Help with LG 55LS4500. DARK SHADOW ON SCREEN

              Yup. I cover mine in fresh garbage bags until I'm ready for reassembly.

              Comment

              • Cgreen
                Member
                • Aug 2016
                • 22
                • U.S.

                #27
                Re: Please Help with LG 55LS4500. DARK SHADOW ON SCREEN

                Ok opened it up , Lcd panel # is LC550EUE. BUT I can't seem to find the backlight strips for sale anywhere. ShopJimmy.com has 2 strips listed (but out of stock) However it has SEF1 following the above listed part # so I'm not sure if it's the right one. Here is a pic of the panel label, maybe someone can help me find the LED assemblies.
                Attached Files

                Comment

                • dick_barton
                  Badcaps Legend
                  • Aug 2015
                  • 6643
                  • Wales

                  #28
                  Re: Please Help with LG 55LS4500. DARK SHADOW ON SCREEN

                  Do you have pictures of the led strip and the numbers given on them.
                  Willing to help but I'm no expert.

                  Comment

                  • Cgreen
                    Member
                    • Aug 2016
                    • 22
                    • U.S.

                    #29
                    Re: Please Help with LG 55LS4500. DARK SHADOW ON SCREEN

                    No I was under the impression I could order the LEDs with the lcd panel #. I reassembled the TV so I can use it until I have the parts. While it seems the parts are nearly impossible to find I may just have to buy a new TV. It works fine except for the shadow ,but I can't stand looking at it. I can find leds for dang near every tv ever made except this one. If I completely disassemble the TV and get to the leds I will be out of a TV for days to months until I find parts...kinda stuck I guess.

                    Comment

                    • vinceroger69
                      Badcaps Legend
                      • Mar 2012
                      • 6714
                      • uk

                      #30
                      Re: Please Help with LG 55LS4500. DARK SHADOW ON SCREEN

                      some good pictures of the leds which maybe used in this panel
                      http://www.ebay.co.uk/itm/BACKLIGHT-...-/201483699561
                      Last edited by vinceroger69; 08-28-2016, 04:02 PM.

                      Comment

                      • dick_barton
                        Badcaps Legend
                        • Aug 2015
                        • 6643
                        • Wales

                        #31
                        Re: Please Help with LG 55LS4500. DARK SHADOW ON SCREEN

                        Vinceroger69
                        Price doesn't look to bad if you want to change the entire strip.
                        Willing to help but I'm no expert.

                        Comment

                        • vinceroger69
                          Badcaps Legend
                          • Mar 2012
                          • 6714
                          • uk

                          #32
                          Re: Please Help with LG 55LS4500. DARK SHADOW ON SCREEN

                          i wonder if its worth looking on aliexpress.com for replacement leds? and just changing whats gone and have some spares? depends if cgreen can change them or knows somebody who can.

                          Maybe something like this but i have no idea of the size or volts used
                          https://ru.aliexpress.com/item/50pcs...9-87bbd415770b
                          Last edited by vinceroger69; 08-28-2016, 04:28 PM.

                          Comment

                          • Cgreen
                            Member
                            • Aug 2016
                            • 22
                            • U.S.

                            #33
                            Re: Please Help with LG 55LS4500. DARK SHADOW ON SCREEN

                            Originally posted by vinceroger69
                            some good pictures of the leds which maybe used in this panel
                            http://www.ebay.co.uk/itm/BACKLIGHT-...-/201483699561
                            I saw those on ebay but wast sure if they were the right ones, or if that was the left or right side....or if it even matters.
                            I know my next tv will not be a lg, this one is only a couple years old. Nothing lasts long anymore.

                            Comment

                            • vinceroger69
                              Badcaps Legend
                              • Mar 2012
                              • 6714
                              • uk

                              #34
                              Re: Please Help with LG 55LS4500. DARK SHADOW ON SCREEN

                              Originally posted by Cgreen
                              I saw those on ebay but wast sure if they were the right ones, or if that was the left or right side....or if it even matters.
                              I know my next tv will not be a lg, this one is only a couple years old. Nothing lasts long anymore.
                              im sure if you email the seller they will advise you what side there from and may even offer you a cheaper deal ive got to say i do like lg sets myself and a few family members have lg stuff too.

                              Comment

                              • Cgreen
                                Member
                                • Aug 2016
                                • 22
                                • U.S.

                                #35
                                Re: Please Help with LG 55LS4500. DARK SHADOW ON SCREEN

                                Good advice, I emailed the guy and he said it was the right side . He also emailed me a good close up of the part number on the leds. So here I go tearing down the TV again to make sure before ordering.

                                Comment

                                • Cgreen
                                  Member
                                  • Aug 2016
                                  • 22
                                  • U.S.

                                  #36
                                  Re: Please Help with LG 55LS4500. DARK SHADOW ON SCREEN

                                  I got it completely disassembled, managed to successfully remove the lcd without breaking it. I found a complete set of leds on ebay, with matching part #s. It lists for a different tv model but the actual led assemblies have matching part #s. Got both sides for $79 with free shipping. Thanks for all the help guys, now to wait on the delivery guy.

                                  Comment

                                  • budm
                                    Badcaps Legend
                                    • Feb 2010
                                    • 40746
                                    • USA

                                    #37
                                    Re: Please Help with LG 55LS4500. DARK SHADOW ON SCREEN

                                    You should be able to remove the strips and run them to see if all LEDS are on or not.
                                    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

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