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Abit KT7A successful recapping

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    Abit KT7A successful recapping

    I have two of these boards, an Abit KT7A and a KT7A-RAID. The KT7A is about a year older than the RAID.

    It seems to me that the first caps to go on these boards are the three 1500uf 6.3V ones near the AGP slot. On my KT7A, these were bulged visibly (Jackcon brand). On my KT7A-R, these didn't show any visible signs of deterioration, but I kept getting blue screen errors that referred to an Nvidia driver, and the machine was generally unstable.

    After recapping both boards completely with Rubycon MBZ series, they are running remarkably well.

    Interestingly, I was using a Duron 1.1 with 200MHz FSB with the KT7A-R and I was unable to run the RAM asynchronously at 133MHz (Host CLK+33) when the board was brand new but it works beautifully now! So you could say after the recapping it is better than new. I've left these machines running a Quake 3 timedemo loop overnight and no crashes yet.

    I used a Nicholson 30W iron with a medium sized tip. After removing the old caps, I didn't bother to clean the holes, instead pushing the new caps through the old solder. This seems to work fine. I know Topcat et al would not recommend this, but I've done 4 boards and a network switch power supply this way and no issues yet.

    #2
    Re: Abit KT7A successful recapping

    Congrats. Pics? Where did you get the MBZ, as far as I know Digikey does not sell them.
    The great capacitor showdown!

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      #3
      Re: Abit KT7A successful recapping

      makk could of got the Rubycon MBZ caps from Topcat's capacitor kits or a website we currently do not know of.
      My gaming PC:
      AMD Phenom II X6 1100T Black Edition 3.3GHz Six-Core CPU (Socket AM3)
      ASUS M4A77TD AMD 770 AM3 Motherboard
      PowerColor AMD Radeon RX 480 8GB GDDR5 PCI-Express x16 3.0 Graphics Card
      G.SKILL Value Series 16GB DDR3-1333 RAM (4x4GB dual channel)
      TOSHIBA DT01ACA200 2TB 3.5" SATA HDD (x2)
      WD Caviar Green WD20EARX 2TB 3.5" SATA HDD
      ASUS Xonar DG 5.1 Channel PCI sound card
      Antec HCG-750M 750W ATX12V v2.32 80 PLUS BRONZE Power Supply
      Antec Three Hundred Mid-Tower Case
      Microsoft Windows 10 Pro 64-bit
      Microsoft Windows 7 Ultimate SP1 64-bit

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        #4
        Re: Abit KT7A successful recapping

        great stuff Makk, i am happy to see success stories

        I didn't bother to clean the holes, instead pushing the new caps through the old solder
        this is ok but important to heat the solder pads and not push hard
        capacitor lab yachtmati techmati

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          #5
          Re: Abit KT7A successful recapping

          i love mbz caps. do u know that u can replace all 2200uf on that kt7a with 1500uf 10v mbz? its not that i recommended it but it works like a charm for my 1200mhz duron @ 1300mhz (10+ mhz fsb oc). it's been one of my folding rigs and works 24/7.
          days are so short when you actually do something..

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            #6
            Re: Abit KT7A successful recapping

            Originally posted by makk
            ... I know Topcat et al would not recommend this, but I've done 4 boards and a network switch power supply this way and no issues yet.

            hehe... I use a cheap "ripoff shack" desoldering iron to remove and resolder the new caps in most cases. the only time I break out the real iron is if the space is too tight for the desoldering iron .. its a pretty good trick cuz the desoldering iron will hold solder in the suction hole in the center of the tip and as long as you are carefull when desoldering the varnish on the pcboard will keep you from oversoldering when you resolder the new caps .. of course I've been soldering since I was 6 years old and Ive been told that I could solder better with a hot fire poker than most people do with a good iron so perhaps the novices should follow Topcat's advise on soldering and desoldering

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