"Yes. However, if the cap is in a circuit that requires an extremely
low ESR, you may have problems with a lower voltage substitute."

I assume you meant higher there. The old formula y'know :

+capacitance
+voltage
-size
-ESR (+temperature + ripple current rating)
=price

Just mentioning this because since the question was asked, the poster does not know.

It may sound strange to some, but in some cases it might be better to use a LOWER capacity. Really, is a switchmode is running at 100 Khz, does it really need a 2,200 uF ? Hell no, they used that value to get the best price on the ripple current/ESR. In some cases maybe they want certain supplies to fall before others on power down, but that's usually not critical enough to worry about and that esotera of designing is usually out the window when the thing is barely out of warranty.

If you get a lower value lytic at the same voltage and the same size, it is likely to have lower ESR, no ?

Of course if the thing just runs off an AC trnsformer then it's different. If that's the case, don't lower the value.

In the case of the OP, if you don't know, just use the original value but select one from Digikey with lower ESR, higher ripple current rating and you should be fine as long as it physically fits.

At any rate, here is the Digikey page on it :

http://www.digikey.com/product-searc...=0&pageSize=25

The highest priced one is 58 cents. From there, measure what you got, look at the ones that are the size you need and get the one with the highest ripple current rating.

And then of course, replace them all.