Samsung Plasma PN50A550S1FXZA - Power Cycle, but eventually turns on.

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  • str8shooter1
    New Member
    • Feb 2015
    • 4
    • Canada
    #1

    Samsung Plasma PN50A550S1FXZA - Power Cycle, but eventually turns on.

    Hi All,

    I am new the forum and looking for some advice.

    I have a Samsung Plasma PN50A550S1FXZA.
    It was sporadically power cycling every few months. It would power cycle for a couple minutes, then it would turn on and work fine. It never turns itself off like a lot people are saying is a common symptom. Mine stays on until I turn it off myself. It only cycles on the initial turn on.

    recently is is power cycling every time i turn it on, but it eventually turns on and works great.

    I took the back off and inspected all the capacitors. I thought I saw a bulging one on the Y systain board. (BN96-07132A, LJ41-05571A, LJ92-01535A REV: AA1). I ordered a replacement on Ebay. I installed it. And for about a week, the power cycling went away. I thought great. problem solved.
    But this weekend it starting cycling again, doing the exact same issue - power cycles for a few minutes, then it comes in and works great.

    What else could be the problem?
    Any advice would be great. I am a rookie and have little skills in solding.

    Thanks
    Str8
    Tags: None
    • sordids999
      Badcaps Legend
      • May 2013
      • 2149
      • uk
      #2
      Re: Samsung Plasma PN50A550S1FXZA - Power Cycle, but eventually turns on.

      Posting pictures of the back of your tv showing the boards with clear pictures may help you more with fixing your problem

        Comment

        • str8shooter1
          New Member
          • Feb 2015
          • 4
          • Canada
          #3
          Re: Samsung Plasma PN50A550S1FXZA - Power Cycle, but eventually turns on.

          I will do that when I get a chance. I was hoping someone could help diagnose the problem from the symptoms to give me an avenue to persue.

            Comment

            • budm
              Badcaps Legend
              • Feb 2010
              • 40746
              • USA
              #4
              Re: Samsung Plasma PN50A550S1FXZA - Power Cycle, but eventually turns on.

              https://www.badcaps.net/forum/showth...t=25810&page=7
              Post 128, 129.
              You can try soldering 100uF 10V low ESR (higher Voltage is OK) in parallel with C102 which is on the bottom side of the main board.
              This is the common failure for the A500 series.
              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

                • str8shooter1
                  New Member
                  • Feb 2015
                  • 4
                  • Canada
                  #5
                  Re: Samsung Plasma PN50A550S1FXZA - Power Cycle, but eventually turns on.

                  Thanks budm.
                  I will give this a try.

                    Comment

                    • Electrolab1
                      New Member
                      • Jan 2015
                      • 3
                      • USA
                      #6
                      Re: Samsung Plasma PN50A550S1FXZA - Power Cycle, but eventually turns on.

                      I was sceptical. But I did parallel the c102.
                      I was amazed when the set came on. This is still early on, but I will test this more, before returning this to the customer. Great thanks to whomever posted this fix originally!
                      The true measure of a man, is how he treats those he expects nothing from.

                        Comment

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