Samsung plasma tv ps50b530s2w washed out screen

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  • Amrehab
    Member
    • Jul 2019
    • 11
    • United Kingdom
    #1

    Samsung plasma tv ps50b530s2w washed out screen

    Hello,

    I have a problem with my 48 in Samsung Plasma TV (images attached).

    When I was watching my TV a month ago, I heard a very small explosion after-which the screen turned black so I have turned the TV off. After 5 minutes I turned it back on to find that I have an image but it is washed out and pixelated. I kept it on for a while and then I turned it off for about two weeks. Afterwards, I turned it back on to find out that the screen has two or three large black patches which will slowly recede to reveal the washed out pixelated image. I believe the black patches are only shown when the TV has been cool for a while.

    Any idea how can I solve this problem? I need some expert help please!

    Thank you in advance.

    Best Regards,
    Amr
    Attached Files
    Tags: None
    • chrismurphy
      Badcaps Veteran
      • May 2014
      • 251
      • australia
      #2
      Re: Samsung plasma tv ps50b530s2w washed out screen

      I suspect faulty Z sus board , remove and check for bad joints , especially the inductors

        Comment

        • Amrehab
          Member
          • Jul 2019
          • 11
          • United Kingdom
          #3
          Re: Samsung plasma tv ps50b530s2w washed out screen

          Hello,

          Thank you very much for your response.

          May I know which board is the Z-sus? And do I need to test any voltages? Or check components (fuses, caps, etc.)?

          Thanks again!

            Comment

            • Amrehab
              Member
              • Jul 2019
              • 11
              • United Kingdom
              #4
              Re: Samsung plasma tv ps50b530s2w washed out screen

              Hello,

              I have attached a picture of each individual board.

              I have checked all the connection and everything seem fine. Is there anything else I should try?

              Thanks,
              Amr
              Attached Files

                Comment

                • diif
                  Badcaps Legend
                  • Feb 2014
                  • 6978
                  • England
                  #5
                  Re: Samsung plasma tv ps50b530s2w washed out screen

                  The Z-sus is the top right board with the two big heatsinks.

                    Comment

                    • Amrehab
                      Member
                      • Jul 2019
                      • 11
                      • United Kingdom
                      #6
                      Re: Samsung plasma tv ps50b530s2w washed out screen

                      Hello, I have removed the board and it seems alright. Anything else I should try?

                        Comment

                        • Amrehab
                          Member
                          • Jul 2019
                          • 11
                          • United Kingdom
                          #7
                          Re: Samsung plasma tv ps50b530s2w washed out screen

                          Hello, can anyone help please?! Thanks

                            Comment

                            • chrismurphy
                              Badcaps Veteran
                              • May 2014
                              • 251
                              • australia
                              #8
                              Re: Samsung plasma tv ps50b530s2w washed out screen

                              post picture of the z board solder side

                                Comment

                                • Amrehab
                                  Member
                                  • Jul 2019
                                  • 11
                                  • United Kingdom
                                  #9
                                  Re: Samsung plasma tv ps50b530s2w washed out screen

                                  Hello,

                                  I have taken out the Z board and took pictures as requested.

                                  Would you please guide me through to the next step?

                                  Thank you!
                                  Attached Files

                                    Comment

                                    • budwich
                                      Badcaps Legend
                                      • Jul 2015
                                      • 3097
                                      • Canada
                                      #10
                                      Re: Samsung plasma tv ps50b530s2w washed out screen

                                      there appears to be ALOT of "contamination" along the top of the board in the second picture. Was there some moisture or such around the set? You likely need to clean those areas carefully. In the first, the small capacitor in the middle looks burnt.
                                      Last edited by budwich; 07-12-2019, 02:17 PM.

                                        Comment

                                        • diif
                                          Badcaps Legend
                                          • Feb 2014
                                          • 6978
                                          • England
                                          #11
                                          Re: Samsung plasma tv ps50b530s2w washed out screen

                                          Is this a shadow or a burn diode ?
                                          Attached Files

                                            Comment

                                            • budwich
                                              Badcaps Legend
                                              • Jul 2015
                                              • 3097
                                              • Canada
                                              #12
                                              Re: Samsung plasma tv ps50b530s2w washed out screen

                                              good find.

                                                Comment

                                                • Amrehab
                                                  Member
                                                  • Jul 2019
                                                  • 11
                                                  • United Kingdom
                                                  #13
                                                  Re: Samsung plasma tv ps50b530s2w washed out screen

                                                  Hello!

                                                  Thanks alot for your help!

                                                  You're absolutely right, the diode is burnt - see attached zoomed in picture.

                                                  Update: I have also found that the top "20 x 5 mm 6.3A 250V diode" on the Z board is burnt - I have tested it using a multimeter. Probably this one burnt along with the diode!

                                                  I will replace the diode and update you with results.

                                                  Thanks for your great help!

                                                  Best Regards,
                                                  Amr
                                                  Attached Files

                                                    Comment

                                                    • Amrehab
                                                      Member
                                                      • Jul 2019
                                                      • 11
                                                      • United Kingdom
                                                      #14
                                                      Re: Samsung plasma tv ps50b530s2w washed out screen

                                                      I will also clean all the contamination to get a clearer image of what's going on! Thanks for the info!

                                                        Comment

                                                        • Amrehab
                                                          Member
                                                          • Jul 2019
                                                          • 11
                                                          • United Kingdom
                                                          #15
                                                          Re: Samsung plasma tv ps50b530s2w washed out screen

                                                          From the picture, can you tell me what is the part/model number I should be looking for? I can't seem to find anything related to D4014 or U4006...

                                                            Comment

                                                            • chrismurphy
                                                              Badcaps Veteran
                                                              • May 2014
                                                              • 251
                                                              • australia
                                                              #16
                                                              Re: Samsung plasma tv ps50b530s2w washed out screen

                                                              dont bother replacing the diode ...there will be other issues
                                                              Just look for a replacement board

                                                                Comment

                                                                • chrismurphy
                                                                  Badcaps Veteran
                                                                  • May 2014
                                                                  • 251
                                                                  • australia
                                                                  #17
                                                                  Re: Samsung plasma tv ps50b530s2w washed out screen

                                                                  buy this kit
                                                                  http://www.ohmsupplies.co.uk/epages/...roducts/KIT244

                                                                    Comment

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