wrote in message
oups.com...
Just tried powering up an old (386) PC, and was greeted with an acrid
smell and a puff of smoke; one of the motherboard capacitors had blown.
I'd like to try replacing it, but my main concern is: what rating
should I buy as a replacement? The surviving originals are all marked
"10+ 16J".

10 microfarads @ 16 volts (just a guess).