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As long as your always around when the set is on I'd leave them alone. It doesn't sound like they're leaking or have a high enough ESR to cause problems. If someone else is going to be watching it alot then you might want to change them.
I have a radio and several pieces of electronic equipment from the 60's and the electrolytics are still good. They certainly have a limited lifetime but it seems to be quite variable. I think 2,000 hrs is still quoted for modern aluminum electrolytics.
I also have a collection of vintage electrolytics that I've been reforming and testing with a Sencore LC101. A large fraction of them are in excellent condidtion.
John
Last edited by jeyurkon; 01-23-2009 at 08:01 PM.
Reason: Typo in Sencore model
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