Question about Polarity

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  • TKF
    Member
    • Oct 2013
    • 31
    • US
    #1

    Question about Polarity

    This is my first attempt of recapping a video card from searching and reading these forums I see there is a lot of differences in identifying polarity on capacitors and board markings I have caps ordered I just want to make sure I install them correctly I've included 2 pic please correct me if I'm wrong I'm guessing the hole below the red circle + is the positive and the hole below the blue strip on the cap or the white half moon is the – negative
    Any help would be appreciated Sorry for the questions
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    • momaka
      master hoarder
      • May 2008
      • 12175
      • Bulgaria
      #2
      Re: Question about Polarity

      Yes, blue stripe on cap goes to negative (-) side. On almost all boards (almost!), white shaded circle is usually negative (exception is older ASUS and AsRock motherboards).

        Comment

        • theOracle
          Senior Member
          • Nov 2012
          • 163
          • USA
          #3
          Re: Question about Polarity

          what is the brand of the blown cap in the pic?
          __________________


          the BIG 4

          ~~~ the top tier of low-ESR electrolytic capacitors ~~~

            Comment

            • momaka
              master hoarder
              • May 2008
              • 12175
              • Bulgaria
              #4
              Re: Question about Polarity

              ^ U serious??

              Infamous Sacon FZ. Believed to be the crappies of the bad caps. Replace any an all of those bastards. If it has "FZ" written anywhere on it, it has to go. Or expect to be doing a teardown again very soon.

                Comment

                • theOracle
                  Senior Member
                  • Nov 2012
                  • 163
                  • USA
                  #5
                  Re: Question about Polarity

                  I must admit I am out of the loop on "solid" caps - gotta get up to speed!

                  what are the other bad caps that look "solid" ?

                  my work is all on old stuff 2006 and back
                  Last edited by theOracle; 10-19-2013, 09:29 PM.
                  __________________


                  the BIG 4

                  ~~~ the top tier of low-ESR electrolytic capacitors ~~~

                    Comment

                    • mariushm
                      Badcaps Legend
                      • May 2011
                      • 3799
                      #6
                      Re: Question about Polarity

                      It's not "solid", it's plain electrolytic in a case that makes it look like it's polymer.

                      Loads of nVidia video cards with those Sacon FZ capacitors ... they love to blow up.

                        Comment

                        • theOracle
                          Senior Member
                          • Nov 2012
                          • 163
                          • USA
                          #7
                          Re: Question about Polarity

                          I guess what I was wondering is which other caps that are either solid or have the "solid look" tend to be problematic other than the Sacon FZ ?
                          __________________


                          the BIG 4

                          ~~~ the top tier of low-ESR electrolytic capacitors ~~~

                            Comment

                            • TKF
                              Member
                              • Oct 2013
                              • 31
                              • US
                              #8
                              Re: Question about Polarity

                              Thanks all for your help Sorry for not listing more Info. and #s they are all FZ75 caps on a evga geforce 7600gt card and there are 5-bad 1500uf / 6.3v and 1-bad 470uf / 16v on this board. This is great Info. for rookies like myself hope others readers find it useful as well.

                                Comment

                                • theOracle
                                  Senior Member
                                  • Nov 2012
                                  • 163
                                  • USA
                                  #9
                                  Re: Question about Polarity

                                  apparently you need to replace every one marked FZ - whether it appears blown or not!
                                  __________________


                                  the BIG 4

                                  ~~~ the top tier of low-ESR electrolytic capacitors ~~~

                                    Comment

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