Graphics GPU capacitor identification help needed...

Discussion in 'Hardware' started by Fingers66, 2 Nov 2010.

  1. Fingers66

    Fingers66 Kiwi in London

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    Cheers,

    I think I really need to be sure of what the original cap is rated at, I don't want to guess for the very reason you mention.
     
  2. Picky88

    Picky88 What's a Dremel?

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    I would send Farnell an email, they can probably identify it. Also remember that electrolytic capacitors have a positive and negative terminal, so solder it the right way round by looking at your photo of the card. Have you still got the cap that fell off? I would try soldering some longer pins to the existing one, if the legs have not come off.
     
  3. Bloody_Pete

    Bloody_Pete Technophile

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    Do the legs go through the card? As I have a semenar about PCB's last Friday and it helped alot. It may have been spot soldered on, so the holes wouldn't go through the PCB.

    Also a couple of pics of the item in question could help as my electronics knowlege is expanding rapidly, or failing that I could ask my electronics tutor to have a look tomorrow :)
     
  4. Fingers66

    Fingers66 Kiwi in London

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    It appears to me that the legs go through the PCB. They are still attached as the legs came out from inside the capacitor when I pulled it off (I still can't believe I did that...). I still have the cap I pulled off.

    I went to Maplins yesterday but their system was down so weren't able to help me, or so they said...

    I am still waiting for a response from the GPU manufacturers (HIS) but I am not hopeful. All I need is it correctly identified as sourcing one is the easy part.

    I'll post some pics on the damage tonight if I get a chance.
     
  5. Fingers66

    Fingers66 Kiwi in London

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    Okay, here is the card and the offending capacitor...

    [​IMG]

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    [​IMG]

    [​IMG]

    [​IMG]

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    Can anyone help identify the specification of the capacitor?
     
  6. thehippoz

    thehippoz What's a Dremel?

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  7. Fingers66

    Fingers66 Kiwi in London

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    Okay, it looks like those fantastic dudes at badcaps.net have identified the capacitor...

    <snip>
    That cap is likely Lelon OCRZ series, which is a polymer capacitor:

    http://www.lelon.com.tw/down.php?f=%...pdf&n=OCRZ.pdf

    I see a lot of them on HIS cards.

    16V 100uF is 6.3 x 8 mm. 10 mOhm ESR, 4500 mA rated ripple current.

    For a replacement, you want the same or less ESR, and the same or more ripple.

    This may be a tricky cap to locate a replacement for. OCRZ has very good specs for its size. That said...I see through-holes for a larger size cap. If you use the holes with the larger spacing and move up to 8mm diameter, an appropriate replacement is much easier to find.

    One possibility:

    http://search.digikey.com/scripts/Dk...me=493-3716-ND

    I see you are in the UK. I tried the Farnell site, but didn't find anything there that would work as a replacement for OCRZ.

    <snip>

    Just how do these guys know this stuff? :thumb:

    Anyway, I can't find what I am looking for @ Farnells, can anyone point me in the direction of a UK supplier that might have one?

    I don't fancy paying USD $1 for the cap and GBP £12-£15 for delivery.
     
  8. Picky88

    Picky88 What's a Dremel?

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  9. Fingers66

    Fingers66 Kiwi in London

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    Already emailed them, waiting for a reply.

    The price in the US is 0.64c but has a minimum delivery charge to the UK of $30.
     
  10. Lord-Vale3

    Lord-Vale3 His Tremendousness

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    Yes, give us your money, we like making green off of exports.
     
  11. Fingers66

    Fingers66 Kiwi in London

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    :D
     
  12. Big Elf

    Big Elf Oh no! Not another f----ing elf!

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    My offer for the

    C 89N
    270
    16v

    still holds. If you want a piccie of them let me know.
     
  13. ulfar

    ulfar holy s**t, i can change this?

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  14. Fingers66

    Fingers66 Kiwi in London

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    Many thanks but I would need the same spec (100uF), your is 270uF.

    I did browse the site but they don't have anything that I can see of the same spec. I may email them though.

    I have had a response from RS Components, they are unable to supply.
     

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