2. amps-preamps
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Electrolytic capacitors

I have learned from this web-site that the life span of the electrolytic cap is within 5 to 10 years. I also heard some testimonials that some SS amps or receivers last over 10 or 20 years without a hick-cup. I am confused and scared since I am looking to buy some discontinued but brand new in factory sealed box amps and a processor ( around 4 to 5 years old). Being few years old and in storage but never been used at all, would the 5 to 10 years rule of thumb of the electrolytic cap still apply?
andrewdoan

Showing 1 response by atmasphere

atmasphere's avatar
atmasphere
12,116 posts
 
A lot depends on the environment that the unit was stored in- expect that in a damp environment the caps will not last as long, and maybe after only 2-3 years (for example in a basement) the caps will be suffering if the unit has been in storage the whole time. OTOH drier environments, and particularly with lower voltage equipment (IOW, not tubes) 4-5 years is *usually* no sweat.

FWIW The half life of electrolytics seems to be about 15-20 years, IOW in that time about 1/2 of them will be failing.
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