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    #1

    Need assistance purchasing replacement caps

    Hey guys,

    I've recently purchased a graphics card which does not work. I've received a refund for it and I get to keep it. I've opened it up to find out that it seems the caps have leaked. I'm not too sure though because I thought solid caps did not leak but these look like they have rings of stuff around them on the PCB.

    I have uploaded some pics in an imgur album. The pics are pretty bad. My camera is messed up and will not focus properly on the things in the middle of the image.

    Anyway, here is the album: http://imgur.com/a/Ainfd

    The 2 types of caps I think I need to replace are marked as follows:

    ULR
    16V
    330
    CV

    and

    ULR
    2.5V
    820
    CO

    I'm not sure either if this is the cause of the issue and if replacing the caps that appear to have leaked will fix it.

    When plugged into a computer, the fans will spin and the computer will boot normally but the card is just never detected. I've tried it on a computer that had onboard graphics and it did boot Windows. The device manager wouldn't show anything and installing the drivers was a no go.

    Any input is welcome. I would really appreciate a link to some capacitors that match the ones I need. I find it a bit overwhelming to shop on digikey with my limited knowledge on capacitors.

    I'd also like to know what you guys think my odds are of bringing this thing back to life if I successfully change these caps.

    Thank you very much for reading.

    Edit: Card is a R9 290X, in case anyone wonders.
    Last edited by AxiomBreaker; 05-13-2014, 07:45 PM.
    Tags: None
    #2
    Re: Need assistance purchasing replacement caps

    those caps are polymer and very likely not bad. There's most likely something else wrong.
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      #3
      Re: Need assistance purchasing replacement caps

      I see.

      No idea what could've caused that white residue around some of these caps?

      On the 3rd picture you can see it kinda behaved like a liquid, spreading down and out. Because of the weight of the card, it sags down in that direction.

      Comment

        #4
        Re: Need assistance purchasing replacement caps

        Samxon ULR is a reliable series.

        The problem is that you bought a Radeon, and Radeons have tremendously high failure rates, much more so than GeForce.

        I see tons of defective Radeons on the market all the time, many of them coming from bitcoin miners. I think you have a better chance with reflow than with re-cap.
        "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)

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          #5
          Re: Need assistance purchasing replacement caps

          Originally posted by mockingbird View Post
          Samxon ULR is a reliable series.

          The problem is that you bought a Radeon, and Radeons have tremendously high failure rates, much more so than GeForce.

          I see tons of defective Radeons on the market all the time, many of them coming from bitcoin miners. I think you have a better chance with reflow than with re-cap.
          Yeah I've heard a lot about defective radeons in the past few days, I would not be surprised if this one was used in a mining rig either. This is also a 'press sample' version of the card. People are saying these ran faster than the ones you can buy on the market. AMD has an explanation for it, I don't remember what it was.

          Before I removed the cooler, reflowing it is what I had in mind but after seeing the white residue around some of the caps I thought I'd look into it some more.

          I've actually purchased a brand new one instead of a second hand one this time around. I hope I have no problem with this one. It would be nice to end up with 2 of them though.

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