electrolytic capacitor questions

[wa2ise]

Oh, and be sure that the polarity is correct. If possible, you could put a voltmeter across the cap to see how much voltage and which way is the positive. Maybe the circuit is pumping a fair amount of AC current thru the cap, in which case if the ESR is too high it could get too hot and dry out. A 105C cap may help. And one physically larger may spread out the heating.