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MSI 7383 / G31M2 - bad capasitators?

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    #1

    MSI 7383 / G31M2 - bad capasitators?

    Hi,

    I'm having problems with my MSI 7383 board. Symptoms: Crashes totally without warning, cpu fan shuts down. It's no power supply problem as I thought as I checked with other psu. If even bothers to boot up it fails when reading from hdd should start. It just hangs.

    I started googling for these caps I found from motherboard and I came to this site.

    I'm have about 10 pcs of ost caps: 4v 680uf - most of then look fine but few are little bit "fat". I thinking these caps might be the reason as they are very close to cpu heatsink and I don't have best possible ventilation. Normally I wouldn't even mind to start soldering nothing but this board is from my htpc and I can't find good new motherboard with same specs. I just need to get this fixed.

    My question: What kind of caps should I use to replace these blue ost's? Should I change also some others caps? I'm having about 15 pcs of 6,3v 1000uf (noname) and 10pcs of 16V 1000uf KZJ's. Should I replace these also?

    If you could have replacement caps with links I would be very happy. I'm attaching few pics of motherboard just give more info.

    Pictures of MB can be found from http://www.malila.fi/badcaps

    Greetz,
    -J-

    Ps. Are these ok for 4v OST's --> https://www.badcaps.net/store/produc...products_id=79
    Last edited by jemaliahz; 08-15-2011, 02:05 PM.
    Tags: None
    #2
    Re: MSI 7383 / G31M2 - bad capasitators?

    I see a combination of UCC, OST, and Panasonic.

    Yes, the caps you linked to are a good replacement for those OST capacitors around the VRM.

    You should also replace those tall UCC caps behind the VRM.
    "We have offered them (the Arabs) a sensible way for so many years. But no, they wanted to fight. Fine! We gave them technology, the latest, the kind even Vietnam didn't have. They had double superiority in tanks and aircraft, triple in artillery, and in air defense and anti-tank weapons they had absolute supremacy. And what? Once again they were beaten. Once again they scrammed [sic]. Once again they screamed for us to come save them. Sadat woke me up in the middle of the night twice over the phone, 'Save me!' He demanded to send Soviet troops, and immediately! No! We are not going to fight for them."

    -Leonid Brezhnev (On the Yom Kippur War)

    Comment

      #3
      Re: MSI 7383 / G31M2 - bad capasitators?

      Do you mean those long caps at right side of this picture: http://www.malila.fi/badcaps/IMG_1006.JPG ?

      Or these: http://www.malila.fi/badcaps/IMG_1012.JPG

      What could be good replacement for those? I don't really know much about these so I need to ask again. Link would be appriciated!

      Comment

        #4
        Re: MSI 7383 / G31M2 - bad capasitators?

        Both!

        It looks to me like those are UCC "KZJ". A good replacement is Samxon GC, Rubycon MCZ, or Nichicon HN.
        "We have offered them (the Arabs) a sensible way for so many years. But no, they wanted to fight. Fine! We gave them technology, the latest, the kind even Vietnam didn't have. They had double superiority in tanks and aircraft, triple in artillery, and in air defense and anti-tank weapons they had absolute supremacy. And what? Once again they were beaten. Once again they scrammed [sic]. Once again they screamed for us to come save them. Sadat woke me up in the middle of the night twice over the phone, 'Save me!' He demanded to send Soviet troops, and immediately! No! We are not going to fight for them."

        -Leonid Brezhnev (On the Yom Kippur War)

        Comment

          #5
          Re: MSI 7383 / G31M2 - bad capasitators?

          To make it clear....
          All OST are problem caps.
          All Chemicon KZG and KZJ are problem caps.
          .
          -Usually- only need to worry about the caps 6mm diameter and larger though.
          .
          Last edited by PCBONEZ; 08-15-2011, 04:04 PM.
          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: MSI 7383 / G31M2 - bad capasitators?

            So my shopping list:

            OST 4v 680uf, replacement: https://www.badcaps.net/store/produc...products_id=79
            noname 6,3v 1000uf, replacement: https://www.badcaps.net/store/produc...products_id=43 - 6,3v, 1200uf (not same values, ok still?)
            KJZ 16V, 1000uf, replacement: https://www.badcaps.net/store/produc...products_id=46

            can someone confirm if possible that I'm ordering compatible stuff

            -J-
            Last edited by jemaliahz; 08-16-2011, 03:20 AM.

            Comment

              #7
              Re: MSI 7383 / G31M2 - bad capasitators?

              Do not replace the 16v caps with 10v caps.
              - The 10v rating is a max limit for the cap.
              - Those are most likely on 12v actual voltage.
              Use one of these depending on the diameter you need.
              https://www.badcaps.net/store/produc...products_id=45
              https://www.badcaps.net/store/produc...products_id=44

              For the others, they should work.
              !!! - Did you check that the diameters are okay?

              While replacing 1000uF with 1200uF will work, my choice would be these:
              https://www.badcaps.net/store/produc...products_id=46

              - It is okay to go to a higher voltage rated cap because you know the actual voltage is still going to be less than the new cap's max voltage rating.
              - If you are going to use a lower voltage rated cap [than the original cap] then you need to check the actual circuit voltage. Make sure you don't use a cap rated for less volts than the actual circuit voltage.
              .
              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

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