Power supply in plasma T.V

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  • steveclark1983
    New Member
    • Dec 2010
    • 6
    #1

    Power supply in plasma T.V

    Hi guys/girls,

    I'm totally new to the forum so I do hope this is posted in the right section. Apologies if not. Basically my issue is my samsung plasma tv. It started radomly turning itself off then getting stuck in an almost boot-up like cycle. Sometimes starting up then 2mins later restarting. After a bit of research on the net I've come to the conclusion it is highly likely to be the power supply board and quite possibly a bad capacitor. I've removed the back of the tv and located the power supply board. I'm trying to find which of the capacitors could be the issue. None of them show the tell tale signs in which you describe as a bad cap. The only one I can see that is different is one that has a green stain on the top (only small stain). I know this is mainly for p.c's on here but I'm guessing the boards work around the same basic principles. Any help would be much appreciated or just a shove in the right direction.
    Thanks in advance
    steve
    Tags: None
    • mockingbird
      Badcaps Legend
      • Dec 2008
      • 5484
      • -
      #2
      Re: Power supply in plasma T.V

      I think the green stain is from a marker. What brand are the capacitors?

        Comment

        • MixMasta
          Senior Member
          • Feb 2006
          • 142
          • USA
          #3
          Re: Power supply in plasma T.V

          Your best bet is to post some good photos to this forum of the board and anything else that looks suspect/interesting.

            Comment

            • steveclark1983
              New Member
              • Dec 2010
              • 6
              #4
              Re: Power supply in plasma T.V

              from what i can see on the side CapXon

                Comment

                • steveclark1983
                  New Member
                  • Dec 2010
                  • 6
                  #5
                  Re: Power supply in plasma T.V

                  ok I'll stick a of photos couple on of the board. thanks guys

                    Comment

                    • steveclark1983
                      New Member
                      • Dec 2010
                      • 6
                      #6
                      Re: Power supply in plasma T.V

                      here is the best i could get as ive only the iphone to hand. 330.jpeg is the one with green on it. sorry for last post it made no sense whatsoever
                      Attached Files

                        Comment

                        • mockingbird
                          Badcaps Legend
                          • Dec 2008
                          • 5484
                          • -
                          #7
                          Re: Power supply in plasma T.V

                          CapXon...

                          Eventhough they are not deformed or bulged if you will, replace them.

                          Shame on Samsung for using CapXon. Darned Korean garbage.

                            Comment

                            • steveclark1983
                              New Member
                              • Dec 2010
                              • 6
                              #8
                              Re: Power supply in plasma T.V

                              should i just replace the lot? Could you reccomend a decent brand to use? and finally does this sound like a possible cause to my problem?

                                Comment

                                • Agent24
                                  I see dead caps
                                  • Oct 2007
                                  • 4951
                                  • New Zealand
                                  #9
                                  Re: Power supply in plasma T.V

                                  Decent brands are listed in the FAQ section.

                                  What you need to do however is make sure you get the ESR and Ripple Current rating correct.

                                  What series are your CapXon? It should be written on them, two letters in capitals.
                                  "Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
                                  -David VanHorn

                                    Comment

                                    • steveclark1983
                                      New Member
                                      • Dec 2010
                                      • 6
                                      #10
                                      Re: Power supply in plasma T.V

                                      From what I can see the only letters visible are GL

                                        Comment

                                        • mockingbird
                                          Badcaps Legend
                                          • Dec 2008
                                          • 5484
                                          • -
                                          #11
                                          Re: Power supply in plasma T.V

                                          Originally posted by momaka
                                          For CapXon KM use any of the following: United Chemicon LXY, LXZ, KY; Panasonic FC; Nichicon PW, PM, HE; Rubycon YXG
                                          For CapXon GL: United Chemicon KY; Panasonic FK; Nichicon PM, HE; Rubycon PX
                                          For CapXon KF: United Chemicon KZE; Panasonic FM; Nichicon HD; Rubycon ZL
                                          Most of these are available on Mouser and Digikey. Rubycon ZL, PX, and YXG are available at badcaps.net only.
                                          .

                                            Comment

                                            • retiredcaps
                                              Badcaps Legend
                                              • Apr 2010
                                              • 9271
                                              #12
                                              Re: Power supply in plasma T.V

                                              Originally posted by steveclark1983
                                              Any help would be much appreciated or just a shove in the right direction.
                                              1) It would help to know the model number of your Samsung.

                                              2) Head over to the "Troubleshooting TVs and Video Sources" section and look for posts by PlainBill and Samsung plasma TVs. Pay particular to attention to the troubleshooting advice and techniques.

                                              3) Find the service manual for your Samsung.

                                              4) Take voltage readings and compare to service manual.
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                                              If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.

                                              We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.

                                              Please do not post inline and offsite as they slow down the loading of pages.

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