In case you used flux, make sure to clean it up since it conducts electricity quite well and can cause all kinds of trouble!

It is also always a good idea to test for 0 Ohm continuity between the cap and the board with a multimeter, that way you can also spot any shorts.

And before recapping, did you wash or clean the board thoroughly? Electrolyte also can cause the same problems as solder flux.

Good luck!