The caps that will wear out, are the ones that are under heat and operation
stress. The caps under little stress will most likely be okay. If you
blindly replace caps, you will most likely be changing ones that are still
working okay. Use proper troubleshooting techniques to determine the worn
down ones, and replace them as necessary. It is not only caps that go bad in
older equipment. The various other parts can also drift off value with age.

--

Jerry G.
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wrote in message
ups.com...
What is the life span of an electrolytic capacitor?
In a 26 year-old piece of video equipment, should I replace all the
electrolytic caps with such ratings as 4.7uf @25v or just concentrate
on the high voltage ones like 10uf @ 450v.
Which ones are more prone to failure under normal use?