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    #1

    Please help me identify bad Caps in Mobo

    Hello all!

    This is my first post so if i have made a mistake in publishing this post in the wrong forum please forgive me.

    Now to the problem,
    I have a DFI Lanparty board, with NF4 chipset socket 939.
    It have a problem of random crashes with no matter the work i'm doing.
    It can be stable for hours or crash after half an hour.
    I disconnected all components and tesed it again, still crashes.
    I looked over the whole board and psu for signs of bad caps and found only one issue:
    The PSU looks ok except tons of dust, The mobo has all capacitors flat and looks good except two caps near the cpu socket that aren't realy bulging, just different from the other caps in the whole board.

    These are the Caps in question:





    Please help me solve if these are messing me up or i need to check for other problem.
    Thank you.

    TheWolf
    Attached Files
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    #2
    Re: Please help me identify bad Caps in Mobo

    those are just a different brand. what brand caps are on that board?

    Comment

      #3
      Re: Please help me identify bad Caps in Mobo

      Originally posted by TheWolf View Post
      Hello all!

      This is my first post so if i have made a mistake in publishing this post in the wrong forum please forgive me.

      Now to the problem,
      I have a DFI Lanparty board, with NF4 chipset socket 939.
      It have a problem of random crashes with no matter the work i'm doing.
      It can be stable for hours or crash after half an hour.
      I disconnected all components and tesed it again, still crashes.
      I looked over the whole board and psu for signs of bad caps and found only one issue:
      The PSU looks ok except tons of dust, The mobo has all capacitors flat and looks good except two caps near the cpu socket that aren't realy bulging, just different from the other caps in the whole board.

      These are the Caps in question:





      Please help me solve if these are messing me up or i need to check for other problem.
      Thank you.

      TheWolf
      They look like they are starting to bloat to me.
      Are they KZG?
      .
      Mann-Made Global Warming.
      - We should be more concerned about the Intellectual Climate.
      -
      Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
      - Dr Seuss
      -
      You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
      -

      Comment

        #4
        Re: Please help me identify bad Caps in Mobo

        Hi!
        I just disassembled the board.
        All caps have KZG written on them, are KZG not good?
        All with straight heads, only these two are little bloating.
        I think these are the only one of it's kind on this board spec'wise.
        Thank you.

        Comment

          #5
          Re: Please help me identify bad Caps in Mobo

          Chemicon is generally a good brand but their KZG [and KZJ] fail due to heat.
          Good replacements are Rubycon MBZ, MCZ - Sanyo WG - Panasonic FL, FJ.

          Do you have any Nichicon marked HN(M) or HM(M) ??
          Mann-Made Global Warming.
          - We should be more concerned about the Intellectual Climate.
          -
          Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
          - Dr Seuss
          -
          You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
          -

          Comment

            #6
            Re: Please help me identify bad Caps in Mobo

            are you talking to me?!
            I was wondering if these Caps can be the source of my problems.
            If so, maybe I will recap them with one of the cap you recommended.
            I've seen caps with bloated heads like this on different boards, but on this board, these are the only ones, all caps from the same manufacturer.
            Please tell me if this can be the problem befor i'm firing my soldering gun
            Thank you.

            Comment

              #7
              Re: Please help me identify bad Caps in Mobo

              Yes and Yes.

              KZG don't always bloat when they go bad.
              Replace all of them.
              [OST [any series] does the same thing. - Fail w/o bloating.]

              .
              Mann-Made Global Warming.
              - We should be more concerned about the Intellectual Climate.
              -
              Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
              - Dr Seuss
              -
              You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
              -

              Comment

                #8
                Re: Please help me identify bad Caps in Mobo

                Just to be on the safe side, in case i misunderstood i'll ask again (i can be an old fart too).
                are these caps bloated or not? all other caps on the board are from same manufacturer and have straight heads.
                Thank you for your understanding, I just need to be sure.

                Comment

                  #9
                  Re: Please help me identify bad Caps in Mobo

                  With KZG bloating doesn't matter. - Just replace them.
                  - All the KZG [from 6mm diameter and up anyway] need to go bye bye.
                  .
                  Mann-Made Global Warming.
                  - We should be more concerned about the Intellectual Climate.
                  -
                  Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
                  - Dr Seuss
                  -
                  You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
                  -

                  Comment

                    #10
                    Re: Please help me identify bad Caps in Mobo

                    I asked about Nichicon marked HN(M) or HM(M) ??
                    Mann-Made Global Warming.
                    - We should be more concerned about the Intellectual Climate.
                    -
                    Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
                    - Dr Seuss
                    -
                    You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
                    -

                    Comment

                      #11
                      Re: Please help me identify bad Caps in Mobo

                      what the bleep is a Nichicon?!

                      Comment

                        #12
                        Re: Please help me identify bad Caps in Mobo

                        Nichicon is another capacitor brand, HM and HN are known to fail in ca 2003>2006 manufacturer dates
                        PCBONEZ is asking if the other caps that have a different brand are of this model...
                        "The one who says it cannot be done should never interrupt the one who is doing it."

                        Comment

                          #13
                          Re: Please help me identify bad Caps in Mobo

                          All caps that i have seen on this board are KZG and else are solid caps that i don't know their manufacturer name.
                          I'm away from the board now, i'll check again tommorow.
                          Thank you all for the help!

                          Comment

                            #14
                            Re: Please help me identify bad Caps in Mobo

                            Originally posted by Per Hansson View Post
                            Nichicon is another capacitor brand, HM and HN are known to fail in ca 2003>2006 manufacturer dates
                            PCBONEZ is asking if the other caps that have a different brand are of this model...
                            Correction - 2001-2004
                            Mann-Made Global Warming.
                            - We should be more concerned about the Intellectual Climate.
                            -
                            Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
                            - Dr Seuss
                            -
                            You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
                            -

                            Comment

                              #15
                              Re: Please help me identify bad Caps in Mobo

                              KZG are brown w/white lettering.
                              There appears to be some of another color in the photo.
                              .
                              Mann-Made Global Warming.
                              - We should be more concerned about the Intellectual Climate.
                              -
                              Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
                              - Dr Seuss
                              -
                              You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
                              -

                              Comment

                                #16
                                Re: Please help me identify bad Caps in Mobo

                                Those caps in the pictures are in PCIe optional voltage regulator circuit, they are not problem I guess.

                                firstly, try to change all 1000uF/6.3V caps around DIMM slot and 1500uF/16V in CPU voltage regulator circuit.

                                see attached pictures, colored circles.

                                I also have three set of DFI Lanparty NF4-D/Ultra-D and they're still working fine.
                                Attached Files
                                | AMD Phenom II X2 550BE | GIGABYTE GA-MA790FXT-UD5P | GeIL DDR3 Ultra 2x2GB 1600C7 |
                                | XFX GTS250 DDR3 512MB | Dell H525EF-00 | Lancool PC-K62 Black | Samsung 2232GW |
                                | 2xWD7500AYYS | 2xHD322GJ Raid0 |

                                Comment

                                  #17
                                  Re: Please help me identify bad Caps in Mobo

                                  If it failed it's most likely NOT the caps but the typical nvidia chipset/video problem. It needs a reflow, or the ghetto "oven method", i just detailed that in another post. However if you do try putting it into the oven, do remove all electrolytic caps before or you'll have popcorn.
                                  Originally posted by PeteS in CA
                                  Remember that by the time consequences of a short-sighted decision are experienced, the idiot who made the bad decision may have already been promoted or moved on to a better job at another company.
                                  A working TV? How boring!

                                  Comment

                                    #18
                                    Re: Please help me identify bad Caps in Mobo

                                    The complaint is random crashes.
                                    Sounds more like bad caps.
                                    Mann-Made Global Warming.
                                    - We should be more concerned about the Intellectual Climate.
                                    -
                                    Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
                                    - Dr Seuss
                                    -
                                    You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
                                    -

                                    Comment

                                      #19
                                      Re: Please help me identify bad Caps in Mobo

                                      Originally posted by PCBONEZ View Post
                                      The complaint is random crashes.
                                      Sounds more like bad caps.
                                      Yes, I agreed.
                                      I suspected all KZG's 1000/6.3V around DIMM slots.
                                      | AMD Phenom II X2 550BE | GIGABYTE GA-MA790FXT-UD5P | GeIL DDR3 Ultra 2x2GB 1600C7 |
                                      | XFX GTS250 DDR3 512MB | Dell H525EF-00 | Lancool PC-K62 Black | Samsung 2232GW |
                                      | 2xWD7500AYYS | 2xHD322GJ Raid0 |

                                      Comment

                                        #20
                                        Re: Please help me identify bad Caps in Mobo

                                        Originally posted by PCBONEZ View Post
                                        The complaint is random crashes.
                                        Sounds more like bad caps.
                                        Depends on the type of crash. If it's a total lockup, not a reset or BSOD, it's most likely chipset.
                                        Originally posted by PeteS in CA
                                        Remember that by the time consequences of a short-sighted decision are experienced, the idiot who made the bad decision may have already been promoted or moved on to a better job at another company.
                                        A working TV? How boring!

                                        Comment

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