I would say that the blue strip on the top indicates the negative I am guessing, as for the cap I indicated the only markings on the CAP are
A779 1200 4V it does not have the FZ on it like the other caps.
As for warranty yes one of the cards is under warranty, but the one with the caps blown is not.
So I will just try and replace all the caps on both cards, if it does not work ill just buy new cards.
Worth a try anyway

Thanks
Chris...
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