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Importance of replacing the electrolytic capacitors in any vintage gears

RDoc

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Quality problems can happen anywhere. In earlier years I liked HP computers, precisely because of the quality, but then I once had a motherboard from them where dozens of electrolytic capacitors were obviously defective shortly after the warranty period had expired. As such computers were still relatively expensive at the time, I went to the trouble of replacing them. After that, everything worked again for years.
To be fair to Acura, the car was over 30 years old at that point.
 

Audiofire

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So a summary of it so far, if I understand it all correctly, will be something like:
Just doing a recap for the sake of it seems unnecessary, which can also do more harm than good if you don't know what you're doing.
It's a somewhat unreliable approach, the technical answer is more like this:
"The expected life time shall be about fifteen years at maximum as a guide in terms of deterioration of the sealant."

Depending on manufacturing quality, the electrolyte will evaporate 7 to 50 years after the manufacturing date (yeah, theory is that different from practice).
 
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