lg 60pb660v plasma tv

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  • thuss
    Badcaps Veteran
    • Jul 2012
    • 321
    • uk
    #1

    lg 60pb660v plasma tv

    The above tv stays on now thanks to help from some badcap members . But after the Y sus repair I am getting pixels that take a couple of seconds to go and are several different colours -please have a look at the photos I have attached.

    I have run the test patterns and its evident to a degree.

    I have adjusted the set up and dn without any success and all the voltages are as follows

    va 55
    vs 205
    vy 181
    vzb 135

    Any help would be appreciated (I have reseated the ribbon from the main board to the tcon several times, tvs still the same)
    What I found strange how the tv retains image of the tv settings menu please see last two photos
    Attached Files
    Last edited by thuss; 08-18-2016, 01:30 AM.
    Tags: None
    • maxvalutech
      Badcaps Veteran
      • Dec 2014
      • 804
      • australia
      #2
      Re: lg 60pb660v plasma tv

      Image retention (IR). Turn down contrast brightness etc and display only moving pictures not static images. A web search of this problem will assist you. Are there any other adjustment buttons on board other than vs va as a minor tweak can quickly affect pixel display. Plasma burn-in period recommended anywhere from 100-250 hours operation without static images or lots of black screen.

        Comment

        • sordids999
          Badcaps Legend
          • May 2013
          • 2152
          • uk
          #3
          Re: lg 60pb660v plasma tv

          Try turning down VS slightly worked for me on a samsung plasma

            Comment

            • ReeceyBurger123
              Never Give Up !
              • May 2014
              • 7325
              • Britain
              #4
              Re: lg 60pb660v plasma tv

              Looks like Zsus issue to me, whats Zbias running at ?

              Edit: my bad just seen Vz is good, remove the Zsus and check for cold solder joints on the ERC coils.
              Last edited by ReeceyBurger123; 08-18-2016, 07:06 AM.
              Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

              https://www.facebook.com/Telford-Tel...7894576335359/

                Comment

                • ReeceyBurger123
                  Never Give Up !
                  • May 2014
                  • 7325
                  • Britain
                  #5
                  Re: lg 60pb660v plasma tv

                  Originally posted by maxvalutech
                  Image retention (IR). Turn down contrast brightness etc and display only moving pictures not static images. A web search of this problem will assist you. Are there any other adjustment buttons on board other than vs va as a minor tweak can quickly affect pixel display. Plasma burn-in period recommended anywhere from 100-250 hours operation without static images or lots of black screen.
                  Thats not Ir at all thats improperly charged cells meaning Sus board issue.
                  Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

                  https://www.facebook.com/Telford-Tel...7894576335359/

                    Comment

                    • thuss
                      Badcaps Veteran
                      • Jul 2012
                      • 321
                      • uk
                      #6
                      Re: lg 60pb660v plasma tv

                      I will have a look later and keep you updated.

                      I have seen people mention the coils before but I will have a look.

                      Thank you

                      I did turn the vs down but no difference
                      Last edited by thuss; 08-18-2016, 11:22 AM.

                        Comment

                        • maxvalutech
                          Badcaps Veteran
                          • Dec 2014
                          • 804
                          • australia
                          #7
                          Re: lg 60pb660v plasma tv

                          Respect other comments but your pic shows contrast set at 90 to start with and energy save is off. Suggest factory reset as a starting point for settings and then analyse. How old is the set?

                            Comment

                            • ReeceyBurger123
                              Never Give Up !
                              • May 2014
                              • 7325
                              • Britain
                              #8
                              Re: lg 60pb660v plasma tv

                              Originally posted by maxvalutech
                              Respect other comments but your pic shows contrast set at 90 to start with and energy save is off. Suggest factory reset as a starting point for settings and then analyse. How old is the set?
                              Where did I not "respect" you ? Was simply pointing out, you going to be another forum cry baby ?
                              Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

                              https://www.facebook.com/Telford-Tel...7894576335359/

                                Comment

                                • thuss
                                  Badcaps Veteran
                                  • Jul 2012
                                  • 321
                                  • uk
                                  #9
                                  Re: lg 60pb660v plasma tv

                                  Originally posted by maxvalutech
                                  Respect other comments but your pic shows contrast set at 90 to start with and energy save is off. Suggest factory reset as a starting point for settings and then analyse. How old is the set?
                                  Those were just an initial couple of photos, I did a factory reset, I also software updated it and resoldered the joints on the z sus there was only one coil but everything looked fine.

                                  The contrast, brightness have all been decreased but still no difference.

                                  I think I will change all the mosfets on the y sus/replacing the y sus failing that I'm stumped any ideas would be appreciated?
                                  Last edited by thuss; 08-18-2016, 05:50 PM.

                                    Comment

                                    • thuss
                                      Badcaps Veteran
                                      • Jul 2012
                                      • 321
                                      • uk
                                      #10
                                      Re: lg 60pb660v plasma tv

                                      Originally posted by maxvalutech
                                      Respect other comments but your pic shows contrast set at 90 to start with and energy save is off. Suggest factory reset as a starting point for settings and then analyse. How old is the set?
                                      2.5 years old

                                        Comment

                                        • maxvalutech
                                          Badcaps Veteran
                                          • Dec 2014
                                          • 804
                                          • australia
                                          #11
                                          Re: lg 60pb660v plasma tv

                                          Reecey easily upset - the remark was addressed to the set owner to respect others comments but to consider all. The set should be well and truly burnt in by now - what voltage is going to control board and what is the led showing?

                                            Comment

                                            • ReeceyBurger123
                                              Never Give Up !
                                              • May 2014
                                              • 7325
                                              • Britain
                                              #12
                                              Re: lg 60pb660v plasma tv

                                              Ok, also this isnt a controller fault one of the susboards isnt running the panel properly. Have you a scope OP ?
                                              Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

                                              https://www.facebook.com/Telford-Tel...7894576335359/

                                                Comment

                                                • maxvalutech
                                                  Badcaps Veteran
                                                  • Dec 2014
                                                  • 804
                                                  • australia
                                                  #13
                                                  Re: lg 60pb660v plasma tv

                                                  Originally posted by ReeceyBurger123
                                                  Ok, also this isnt a controller fault one of the susboards isnt running the panel properly. Have you a scope OP ?
                                                  From previous post pic the buffers look to be 2 halves but with a joiner ribbon - can they be split one at a time for testing one against the other? Disconnected from main one at a time that is.
                                                  Last edited by maxvalutech; 08-18-2016, 09:07 PM.

                                                    Comment

                                                    • thuss
                                                      Badcaps Veteran
                                                      • Jul 2012
                                                      • 321
                                                      • uk
                                                      #14
                                                      Re: lg 60pb660v plasma tv

                                                      Originally posted by maxvalutech
                                                      From previous post pic the buffers look to be 2 halves but with a joiner ribbon - can they be split one at a time for testing one against the other? Disconnected from main one at a time that is.
                                                      They can be connected and I have tested them i.e as per youtube testing 50pg3000 etc buffers.

                                                      I think there is another weak component on the Y sus.

                                                      If there was a problem with the buffers I would have expected horizontal lines?

                                                        Comment

                                                        • thuss
                                                          Badcaps Veteran
                                                          • Jul 2012
                                                          • 321
                                                          • uk
                                                          #15
                                                          Re: lg 60pb660v plasma tv

                                                          Originally posted by ReeceyBurger123
                                                          Ok, also this isnt a controller fault one of the susboards isnt running the panel properly. Have you a scope OP ?
                                                          Soz no scope

                                                            Comment

                                                            • ReeceyBurger123
                                                              Never Give Up !
                                                              • May 2014
                                                              • 7325
                                                              • Britain
                                                              #16
                                                              Re: lg 60pb660v plasma tv

                                                              The buffers are fine, they would not cause this issue anyway. Whats -VSC running at ? Its something on the Susboards not working and charging the panel properly.
                                                              Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

                                                              https://www.facebook.com/Telford-Tel...7894576335359/

                                                                Comment

                                                                • thuss
                                                                  Badcaps Veteran
                                                                  • Jul 2012
                                                                  • 321
                                                                  • uk
                                                                  #17
                                                                  Re: lg 60pb660v plasma tv

                                                                  Originally posted by ReeceyBurger123
                                                                  The buffers are fine, they would not cause this issue anyway. Whats -VSC running at ? Its something on the Susboards not working and charging the panel properly.

                                                                  I checked it last night and it was 29.4 volts- which I thought was way to low?
                                                                  I think the vsc should be about 150?

                                                                  (The measurement I took of vsc is on the connector block between buffers and Y sus I will double check)

                                                                  To get the YsuS working I replaced the AUK C3C16 SMK0825 with a fdp51n25. May be Ive put the wrong replacement in and its surpressing. I only used a 51n25 after it was stated that it could be used as an equivalent
                                                                  Last edited by thuss; 08-19-2016, 12:37 PM.

                                                                    Comment

                                                                    • thuss
                                                                      Badcaps Veteran
                                                                      • Jul 2012
                                                                      • 321
                                                                      • uk
                                                                      #18
                                                                      Re: lg 60pb660v plasma tv

                                                                      The VSC is only 30v

                                                                        Comment

                                                                        • Hamie
                                                                          Badcaps Legend
                                                                          • Apr 2014
                                                                          • 1383
                                                                          • UK
                                                                          #19
                                                                          Re: lg 60pb660v plasma tv

                                                                          Take a photo of the circuit where you have replaced the FETS (underside of the board)

                                                                            Comment

                                                                            • thuss
                                                                              Badcaps Veteran
                                                                              • Jul 2012
                                                                              • 321
                                                                              • uk
                                                                              #20
                                                                              Re: lg 60pb660v plasma tv

                                                                              Originally posted by Hamie
                                                                              Take a photo of the circuit where you have replaced the FETS (underside of the board)

                                                                              Sorry about the poor soldering -genuine soldering iron failure, heating it upon a cooker.

                                                                              Its not q402 etc. YD.they look ok.

                                                                              I'm not sure on this. I replaced q552 and q553.
                                                                              Attached Files

                                                                                Comment

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