"Terry F." wrote:

Instead of throwing away old circuit boards which are beyond repair, I
find myself removing the caps etc for possible future re-use (just
using a soldering iron, as wick is quite expensive). Is anyone else
here this sad? :-)

Electrolytic caps have a 'service lifetime' that depends on temperature
and ripple current. It may be unwise to re-use these as they may be on the
way out.

Graham