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    47ls4500 screen has rainbow color.

    47LS4500 screen has rainbow colors or solarized distorted picture.

    I've changed T con still the same.... rainbow color. should I order the main board or just give up and they want me fix tomorrow or tv just needs reconfiguration.
    Attached Files
    Last edited by capwizard; 01-23-2019, 04:38 PM.

    #2
    Re: 47ls4500 screen has rainbow color.

    try turning colour and contrast down . might not help but worked once for me with a pc monitor

    Comment


      #3
      Re: 47ls4500 screen has rainbow color.

      Thank you. tv really works. I probably just charge customer half the price. tv really improves a lot.

      Maybe someone changed main board with different panel no?
      Attached Files
      Last edited by capwizard; 01-23-2019, 05:49 PM.

      Comment


        #4
        Re: 47ls4500 screen has rainbow color.

        I had that exact same problem on a 55" Vizio E550i-B2 and it was the LVDS cable. I wiggled it and got a change of picture state. Removed it and the contacts were swayed. Replaced it with one from the parts pile and it worked great!
        They call me......."threadkiller"

        Comment


          #5
          Re: 47ls4500 screen has rainbow color.

          thank you, i will try it tomorrow.

          Comment


            #6
            Re: 47ls4500 screen has rainbow color.

            try less colour . match skin colour to reality .

            Comment


              #7
              Re: 47ls4500 screen has rainbow color.

              Update

              I've changhed LG main board and the t-con board so the problems are on the screen itself. thanks for everybody helped.

              Comment


                #8
                Re: 47ls4500 screen has rainbow color.

                I have never seen bad LCD panel that will cause bad GAMMA like that, you need to check GAMMA reference Voltages on the T-CON board.
                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


                  #9
                  Re: 47ls4500 screen has rainbow color.

                  you might want to get into the service menu and check things out there. Some settings may deal with panel settings such as the number of bits the panel supports along with the type of color system used. further, what inputs have you used / are available (ie. rgb, hdmi, composite).

                  Comment


                    #10
                    Re: 47ls4500 screen has rainbow color.

                    Originally posted by budm View Post
                    I have never seen bad LCD panel that will cause bad GAMMA like that, you need to check GAMMA reference Voltages on the T-CON board.
                    I've changed 4 main boards and 5 T con boards still are the same problems.
                    Attached Files
                    Last edited by capwizard; 01-27-2019, 11:52 AM.

                    Comment


                      #11
                      Re: 47ls4500 screen has rainbow color.

                      Originally posted by budwich View Post
                      you might want to get into the service menu and check things out there. Some settings may deal with panel settings such as the number of bits the panel supports along with the type of color system used. further, what inputs have you used / are available (ie. rgb, hdmi, composite).
                      I tested with rf signal but it happened on manu also.
                      I've spend almost two days I still can't go into the service menu.

                      Comment


                        #12
                        Re: 47ls4500 screen has rainbow color.

                        You likely need the (@R$%^) service remote to access the service menu The remote has a [IN-START] button on it
                        Last edited by R_J; 01-27-2019, 12:30 PM.

                        Comment


                          #13
                          Re: 47ls4500 screen has rainbow color.

                          Lg in start tv remote app
                          Attached Files

                          Comment


                            #14
                            Re: 47ls4500 screen has rainbow color.

                            Originally posted by R_J View Post
                            You likely need the (@R$%^) service remote to access the service menu The remote has a [IN-START] button on it

                            How to Make an IR Blaster
                            https://www.instructables.com/id/How...an-IR-Blaster/

                            i did make an IR Blaster but my LG phone does not have On-The-Go (OTG) capability. i've down load the APP with an [IN-START] button but i cant use it.
                            Attached Files
                            Last edited by capwizard; 01-27-2019, 03:20 PM.

                            Comment


                              #15
                              Re: 47ls4500 screen has rainbow color.

                              not sure about what the OTG capability gives you BUT basically all you need a "wav file" which you "play" that results in the proper "ir wav" when the "leds" are connected to your headset outputs on your phone / any phone.

                              Comment


                                #16
                                Re: 47ls4500 screen has rainbow color.

                                Originally posted by budwich View Post
                                not sure about what the OTG capability gives you BUT basically all you need a "wav file" which you "play" that results in the proper "ir wav" when the "leds" are connected to your headset outputs on your phone / any phone.

                                vinceroger69 sent me the ZIP files, I didn't knew what was what, after your interpretation, i unzip the file, found the EZ_ADJ .wav IN_START.wav IN_STOP .wav POWER_ONLY.wav . i will try it tomorrow
                                Last edited by capwizard; 01-27-2019, 08:59 PM.

                                Comment


                                  #17
                                  Re: 47ls4500 screen has rainbow color.

                                  If you can get into the service menu with your phone, you should be able to use a regular lg remote after that to navigate the menu/settings

                                  Comment


                                    #18
                                    Re: 47ls4500 screen has rainbow color.

                                    Thanks to all my friends.
                                    I spend whole morning. I still cannot figure out how to do it. I even use Bluetooth hook up IR booster right into speaker. I ended up ordered a $5.84 service LG remote controller.
                                    Attached Files

                                    Comment


                                      #19
                                      Re: 47ls4500 screen has rainbow color.

                                      Originally posted by capwizard View Post
                                      the EZ_ADJ .wav IN_START.wav IN_STOP .wav POWER_ONLY.wav
                                      with wav. file need to make DIY IR LED and speaker or headphone jack. insert it at pc speaker out. then play the wav file with (Windows Amplifier ) player on pc windows.. only on this player the code will sent correctly as its

                                      Comment


                                        #20
                                        Re: 47ls4500 screen has rainbow color.

                                        Thank you, do you mean, I cannot use my cell phone connect to Bluetooth with the homemade IR booster connect right to the speaker.

                                        I heard the pop noise at beginning then were the strings of code sounded.

                                        Comment

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