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Identifying capacitor type - Older 2002 videocard

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    Identifying capacitor type - Older 2002 videocard

    Not good at identifying caps - 180uF in what Voltage/cap type? Card boots, but I saw that one leg was broken and have pulled the other one off for replacement (top/left of photo). Radeon AIW 9700 Pro.

    My uneducated guess is 180uF SMD aluminum electrolytic of maybe 16V, since the card pulls from the 4-pin floppy connector. Lower Voltage? I see the 10V cap over to the right, so perhaps that one is being used for input Voltage of 5V, not pulling from the 12V pin?

    Photo:
    Last edited by Masejoer; 03-09-2021, 02:00 PM.

    #2
    Re: Identifying capacitor type - Older 2002 videocard

    It that is a "C" the voltage is likely 16vdc. The j is 6.3vdc
    Attached Files
    Last edited by R_J; 03-09-2021, 02:30 PM.

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      #3
      Re: Identifying capacitor type - Older 2002 videocard

      Originally posted by R_J View Post
      It that is a "C" the voltage is likely 16vdc. The j is 6.3vdc
      I don't know how you identified this datasheet (I didn't even know what NA was), but that's exactly what I was looking for, and more. Thank you!

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        #4
        Re: Identifying capacitor type - Older 2002 videocard

        Yup, can confirm these are Nichicon NA series and that the above 180 uF cap is rated for 16V. I have several regular 9700 non-pro video cards, and the cap brands do vary a bit for the polymers - some come with Nichicon NA, as shown above, and others come with United Chemicon PXA. Unlike the Nichicon, the Chemicons do state the voltages on them, so that's how I was able to find out what some of these were some years ago when I was trying to fix some of these cards.

        By the way, you may also want to get a better cooler / heatsink for that card. Many R300/R350 cards have died over the years because their stock coolers are a bit too wimpy. A Zalman VF700-CU would be a good start... though there are better alternatives out there too.

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