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Help me identify damage/white marks on bottom of hd 7950 windforce rev2.0

post #1 of 8
Thread Starter 
Hello All,
Just bought a card from ebay, and while it works, it has these marks that look like the good old I slapped on a heatsink with superglue marks, but the thing is, they are on the bottom. Also, there is a blob of solder on what I believe is to be a leg of a capacitor along with, is that dried flux? I can't tell. Any ideas? Salvage from water cooling explosion perhaps?

Runs furmark forever like honeybadger, 59C straight through... can't complain much


https://www.dropbox.com/s/2w6wd2gozajz6c4/2014-04-20%2011.06.04.jpg
https://www.dropbox.com/s/453qmvjgediiaro/2014-04-20%2011.05.40.jpg
https://www.dropbox.com/s/nyfz83l4qefwhb0/2014-04-20%2011.05.31.jpg

Thank you
Edited by pinktank - 4/21/14 at 4:35pm
post #2 of 8
Looks like watermarks to me. I would guess the old owner had a water loop leak onto the card. The indicated area in pink looks like... a burn maybe? I cant really tell.
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post #3 of 8
Thread Starter 
so you think it could be a popped cap after coolant damage? I am tempted to return this
post #4 of 8
Nothing looks wrong with the card. It's covered with flux residue, which is not remotely abnormal nowadays with every manufacturer trying to save a buck by using the same bucket of solvent for far too many PCB washes.

There is a small solder defect (too much rosin/flux around the point in the box), but I can't imagine this being enough to warrant a return unless you can identify an actual problem related to it.
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post #5 of 8
Thread Starter 
Quote:
Originally Posted by Blameless View Post

Nothing looks wrong with the card. It's covered with flux residue, which is not remotely abnormal nowadays with every manufacturer trying to save a buck by using the same bucket of solvent for far too many PCB washes.

There is a small solder defect (too much rosin/flux around the point in the box), but I can't imagine this being enough to warrant a return unless you can identify an actual problem related to it.

So its just rosin around the cap solder, and residue from what I assume to be no-clean flux?

What's up with the tiny bubbles that look like perspiration (see in blue to the right) and the clear blob above the cap solder? Just flux that escaped the wave zapping?
https://www.dropbox.com/s/t2dlv2yeuf01r5e/2014-04-20-11.05.40.jpg
post #6 of 8
my old card went like this when i had a massive coolant leak

All i did was wash it in distilled water then air dry or radiator dry and all was well
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post #7 of 8
Quote:
Originally Posted by pinktank View Post

So its just rosin around the cap solder, and residue from what I assume to be no-clean flux?

What's up with the tiny bubbles that look like perspiration (see in blue to the right) and the clear blob above the cap solder? Just flux that escaped the wave zapping?
https://www.dropbox.com/s/t2dlv2yeuf01r5e/2014-04-20-11.05.40.jpg

The only image that is really of concern to me is the first one. The amount of discoloration on the PCB indicates that it's been run hard, but that doesn't necessarily suggest that it won't continue to function for a long while. Definitely something to note, however.

I'm not certain what the tiny bubbles are, but they seem to be limited to the lacquer on the board.
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post #8 of 8
Thread Starter 
It's not that discolored on the middle area, this card's raised areas are all a slightly different shade, you can see it around the connectors. I think the light and the flux makes it look a little weird in that picture.
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