jbomber, don't worry on the voltage question- provided a 16V one physically fits, it will be fine and may well have a longer lifespan in this situation. When you're looking for a replacement component, the parameters quoted in listings, such as rated voltage, ripple current, temperature etc., aren't hard-and-fast, cut-and-dried points below which it will last indefinitely, above which it will fail straight away, they're more like manufacturers' suggestions for points in the rather fuzzy statistical area where reliability is deemed to go from "acceptable" to "unacceptable". To further cloud the issue, they're somewhat inter-dependent and often need to be traded against each other in a particular situation. (A bit like life in general- thankyou, Marvin.) E.g, as the temperature of the environment a cspacitor is operating in increases, the recommended maximum ripple current for long service drops quite sharply, likewise, if it's being operated close to its rated temperature for long periods, the manufacturer is likely to recommend that a voltage de-rating factor be applied, i.e in this case, going from 10V to 16V gives extra peace of mind. You may encounter the odd, be-whiskered, stick-in the-mud old techie who'll solemnly tell you that this type of capacitor ("electrolytic") needs to be operated close to its rated voltage for longevity- I'm afraid that this is one of those persistent, grandfather-to-father-to-son-type pieces of received wisdom that still lingers from decades ago. It's true that the much less sophisticated, high voltage (300-500V) electrolytic types associated with valve circuitry (yes, that long ago!) could, paradoxically, suffer deterioration of their chemical insulating film if operated at much lower voltages over a long period of time but, since then, a lot of water has passed under the bridge, not to mention money and effort in component development, and this effect is completely insignificant here. Open up pretty much any radio, hi-fi component etc. and you're likely to see lots of 40-50V capacitors, many of which will never see more than a volt or two of DC in their lives- it don't do them any 'arm. Sleep easy on this one- honest!