does anyone know how to reactivate dry capacitors? - diyAudio
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Old 19th August 2001, 02:07 PM   #1
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Location: Flanders, Belgium

I just got a lot of power supplies and huge capacitors (8 * 37000 f) for free. That man told me the capacitors are a little dried out, but it's possible to reactivate them, does anyone know how I can realise that??

Thanks a lot.

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Old 19th August 2001, 05:39 PM   #2
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Join Date: Dec 2000
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Hi Hugobross.
I've heard a lot of stuff about capacitors, but when it comes to dried out capacitors, I've only heard one thing: Buy new ones, but since I've got some old ones as well as You do, it would please me if it's possible to bring them back to life.
Hoffmeyer ;0)
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Old 19th August 2001, 07:30 PM   #3
Geoff is offline Geoff  United Kingdom
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Restoring electrolytics was the topic of another thread. Have a look at: Please Help: How to safely bring to life NOS Capacitor?
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Old 19th August 2001, 07:31 PM   #4
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There are instructions at

What you do is that you basically set them up with limited current for about an hour.

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Old 22nd August 2001, 11:55 AM   #5
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Location: Flanders, Belgium
Thumbs up thanks

Hey, thanks to all of you;
I'll try it out right know, if anyone has other ideas, just tell me..

best regards,

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Old 23rd August 2001, 12:03 PM   #6
djk is offline djk
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Mepco suggests heating the capacitor to its maximum rated temperature before re-forming.This helps to re-distribute the electrolyte.Charging current should be limited to about 10mA.
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