Dear David Forro,

I am restoring "vintage Syths for quite a while. I am using sophisticated
equipment for testing and measuring capacitors.
But I only VERY RARELY experienced that capacitors fail. I believe this is a
hoax. People tent to believe that doing something technically, some
soldering, and the like, is better for their old equipment. I say. Never
change a running system. If you want ot do something good for your old
stuff, clean it, hug it and stop smoking ;-) And try to avoid power
surges...

If any, then it's the Tantalums that cause trouble. The problem with the
Tantalums is that they suddenly turn into a short circuit - damage to the
circuit is expectable. Be attentive to the tantalums, but forget the
electrolytics in the first place. The risk of damaging the most sensitive
CMOS or MOS integrated circuits of the 70ies and 80ies is evident.

Best
Mondo