Just A General "Does This Look Blown To You??" Question

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  • Michale32086
    New Member
    • Nov 2011
    • 1453
    • USA

    #1

    Just A General "Does This Look Blown To You??" Question

    I am assuming that if one is not sure whether a cap is blown or not, it's likely a good idea to swap it out...
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  • tom66
    EVs Rule
    • Apr 2011
    • 32560
    • UK

    #2
    Re: Just A General "Does This Look Blown To You??" Question

    Is this a Hitachi plasma power supply? The 100V caps bulging is a common and well known issue with these.
    Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
    For service manual, schematic, boardview (board view), datasheet, cad - use our search.

    Comment

    • Michale32086
      New Member
      • Nov 2011
      • 1453
      • USA

      #3
      Re: Just A General "Does This Look Blown To You??" Question

      It IS a Hitachi... Seems to work OK which surprised me. I thought for sure those were blown...

      Comment

      • SteveNielsen
        Retired Tech
        • Jun 2012
        • 2327
        • USA

        #4
        Re: Just A General "Does This Look Blown To You??" Question

        Test them?

        Comment

        • zomi
          Badcaps Veteran
          • Nov 2011
          • 505

          #5
          Re: Just A General "Does This Look Blown To You??" Question

          Change them, its better to change them now, and have them fail and risk something else being taken out in the process

          Comment

          • Dang
            Badcaps Veteran
            • Aug 2013
            • 440
            • UK

            #6
            Re: Just A General "Does This Look Blown To You??" Question

            I have an Hitachi plasma my self, I'm still getting around to fixing it needing a buffer board but from what I remember from my research about these particular caps is when they start bulging, they produce an instability which can take out the lower/upper buffer board, someone somewhere said something about it being a higher voltage is produced but I can't back that idea up, needless to say a change is probably a good idea.

            Comment

            • aaronwt6
              Badcaps Veteran
              • Apr 2013
              • 855
              • US

              #7
              Re: Just A General "Does This Look Blown To You??" Question

              Originally posted by Dang
              I have an Hitachi plasma my self, I'm still getting around to fixing it needing a buffer board but from what I remember from my research about these particular caps is when they start bulging, they produce an instability which can take out the lower/upper buffer board, someone somewhere said something about it being a higher voltage is produced but I can't back that idea up, needless to say a change is probably a good idea.
              I was just about to type the same reply. Consider yourself lucky if you have those two caps bulging with both buffers still functional. Every one of these I've encountered with the caps bulging has 1 or both buffers blown. It will happen if the caps aren't changed. Just a matter of time.

              Comment

              • Michale32086
                New Member
                • Nov 2011
                • 1453
                • USA

                #8
                Re: Just A General "Does This Look Blown To You??" Question

                Good points all.. Thanx for all the replies. Much appreciated...

                Comment

                • Shinju
                  Badcaps Legend
                  • Mar 2014
                  • 1239
                  • USA

                  #9
                  Re: Just A General "Does This Look Blown To You??" Question

                  Can of air and clean that poor sucker out!

                  Comment

                  • Michale32086
                    New Member
                    • Nov 2011
                    • 1453
                    • USA

                    #10
                    Re: Just A General "Does This Look Blown To You??" Question

                    Yea, I already took my air compressor to it.. What a mess..

                    Comment

                    • Michale32086
                      New Member
                      • Nov 2011
                      • 1453
                      • USA

                      #11
                      Re: Just A General "Does This Look Blown To You??" Question

                      Let's say, for the sake of a discussion, that I ignored the great advice I received and left the (apparently) blown caps in and ran the TV all night...

                      Let's further postulate that, when I came in the next morning, shocker of shocks, the TV had died...

                      What boards did I likely blow??

                      I did replace the caps (day late/dollar short comes to mind) but the TV still won't come on.. I hit the master power button and the RED standby light comes on and it immediately goes to BLUE which is labeled ON.

                      I hear a distinct relay CLICK when the master power button is pushed and a faint relay click a few seconds after the light goes BLUE..

                      Nothing appears obviously blown, but I know enough to know that doesn't mean much...

                      Where should I look first??

                      For the record, this is a Hitachi P50T501

                      Comment

                      • tom66
                        EVs Rule
                        • Apr 2011
                        • 32560
                        • UK

                        #12
                        Re: Just A General "Does This Look Blown To You??" Question

                        Buffers and Y-sustain, usually. Maybe Y-sustain survives?
                        Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
                        For service manual, schematic, boardview (board view), datasheet, cad - use our search.

                        Comment

                        • retiredcaps
                          Badcaps Legend
                          • Apr 2010
                          • 9271

                          #13
                          Re: Just A General "Does This Look Blown To You??" Question

                          Originally posted by Michale32086
                          Let's say, for the sake of a discussion, that I ignored the great advice I received
                          More tough love.

                          "A man who carries a cat by the tail learns something he can learn in no other way."

                          Mark Twain


                          DON'T FIX IT. Put it up somewhere you can see it daily as a reminder for taking shortcuts and ignoring the advice of posts 5, 6 and 7.
                          Last edited by retiredcaps; 02-04-2015, 05:50 PM.
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                          Comment

                          • mmartell
                            Badcaps Legend
                            • Oct 2013
                            • 3189
                            • Canada

                            #14
                            Re: Just A General "Does This Look Blown To You??" Question

                            Lmao

                            Comment

                            • Michale32086
                              New Member
                              • Nov 2011
                              • 1453
                              • USA

                              #15
                              Re: Just A General "Does This Look Blown To You??" Question

                              Originally posted by retiredcaps
                              More tough love.

                              "A man who carries a cat by the tail learns something he can learn in no other way."

                              Mark Twain


                              DON'T FIX IT. Put it up somewhere you can see it daily as a reminder for taking shortcuts and ignoring the advice of posts 5, 6 and 7.
                              Touche'

                              Comment

                              • ReeceyBurger123
                                Never Give Up !
                                • May 2014
                                • 7325
                                • Britain

                                #16
                                Re: Just A General "Does This Look Blown To You??" Question

                                Never ignore badcaps I learnt that the hard way several years ago, maybe you will learn from this not to ignore them ;(
                                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

                                • Michale32086
                                  New Member
                                  • Nov 2011
                                  • 1453
                                  • USA

                                  #17
                                  Re: Just A General "Does This Look Blown To You??" Question

                                  Originally posted by ReeceyBurger123
                                  Never ignore badcaps I learnt that the hard way several years ago, maybe you will learn from this not to ignore them ;(
                                  Abso-tively....

                                  Comment

                                  • keeney123
                                    Lauren
                                    • Sep 2014
                                    • 2536
                                    • United States

                                    #18
                                    Re: Just A General "Does This Look Blown To You??" Question

                                    Originally posted by Michale32086
                                    Yea, I already took my air compressor to it.. What a mess..
                                    You may not want to use a air compressor as they usually have some oil in the lines. The clean air cans I think are a better way to go.

                                    Comment

                                    • ReeceyBurger123
                                      Never Give Up !
                                      • May 2014
                                      • 7325
                                      • Britain

                                      #19
                                      Re: Just A General "Does This Look Blown To You??" Question

                                      Originally posted by keeney123
                                      You may not want to use a air compressor as they usually have some oil in the lines. The clean air cans I think are a better way to go.
                                      They are also usless, I use a small ball compressor that generates air as it runs only cost £10 works better than a tank compressor and crappy cans of air.
                                      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

                                      • drussell
                                        Senior Member
                                        • Nov 2014
                                        • 144
                                        • Canada

                                        #20
                                        Re: Just A General "Does This Look Blown To You??" Question

                                        Originally posted by keeney123
                                        You may not want to use a air compressor as they usually have some oil in the lines. The clean air cans I think are a better way to go.
                                        As long as it is a direct-drive, oil-less type compressor (most small compressors are this type) and the hose has not been used on an traditional oil-lubricated compressor or with a line oiler you should be fine.

                                        Around here the air duster cans are WAY too expensive. A couple cans of that and you might as well buy yourself a small compressor.

                                        Comment

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