Judging from the location, it doesn't look like a DC-DC output cap, but
rather a bulk supply cap for the graphics processor. The DC-DC
converters are nestled in that jungle of tin cans at the up-end of the
board. That said, it could very well be a tantalum... 16VDC is a pretty
high voltage for a solid polymer cap in that large a capacitance...
Anyway, check out AVX TPS series caps for a replacement... they're
probably available at digikey in onesies... perhaps a TPSD476M016
E
gyoza@comcast.net wrote:
Here are pictures of the capacitor.
http://reddragoncanoeclub.org/paul/9600/
The card is just to show the location and relative size of the cap.
The only difference is that my cap is black and my board is green. heh.
I was assuming the cap is tantalum.
Eric Hidle wrote:
What package is the bad capacitor in and what chemistry was it?
Chances are it was a low-ESR polystyrene or aluminum-polymer cap, in
which case you do not want to replace it with just any off-the-shelf
tantalum or electrolytic capacitor. The DC-DC converters on video
cards are ultra-clean and depend upon a very low amount of resistance
in the output caps to minimize ripple.
Was this thing a round tin can?
E
gyoza@comcast.net wrote:
Nevermind. heh. I will try the radial capacitor. (I found
#electronics on Freenode.net)
gyoza@comcast.net wrote:
I have a Radeon 9600 Pro video card with a bad surface mount
capacitor (C2). I'm not sure of the value of it. It's labeled
"47" and "16V" which I read as 47uF, 16V. Does that sound
correct? It is a black SMD capacitor with a white end to indicate
polarity. The size is roughly 7mm x 3.5mm x 2mm. I need to
identify it enough to replace it. Would it be too wacky to use a
huge radial capacitor to replace it?
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