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Old 24th November 2008, 03:17 AM   #1
mach1 is offline mach1  Australia
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Default Inundated Electrolytics

My workshop got flooded recently, wetting lots of electrolytic caps which are now in the process of air drying.

Does anyone know whether they are likely to have suffered any permanent damage from this treatment ?
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Old 24th November 2008, 03:39 AM   #2
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I'm sorry to read about this but I suspect that they will be OK. They should be pretty much water tight. I might heat them up a little with a hair blow drier to help drive out any remaining moisture that might have gotten between the jacket and the can itself.
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Old 24th November 2008, 04:19 AM   #3
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I doubt it as long as they weren't charged / short circuited, most of them should be fine.
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Old 24th November 2008, 04:50 AM   #4
mach1 is offline mach1  Australia
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Thanks guys - I might try the hairdryer trick. There were a few black gates and cerafines in there which I would hate to lose.
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Old 24th November 2008, 11:16 AM   #5
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Quote:
Originally posted by nukaidee
I doubt it as long as they weren't charged / short circuited, most of them should be fine.
You will find to your surprise that most electrolytics carry a charge all the time. Bob Pease discussed this in one of his National Semi discussions calling it capacitor "soakage".

I purchased a pair of Fairchild tube amplifiers about 15 years ago -- they had been in a flood. As they were early 60's vintage the caps were destined for the ash-heap of audiocrapola. With one of the amps I emptied out the aluminum shell and put a new electrolytic inside the hollowed out tin.

Our house floods about once every couple of years. The most irritating was the rupture of a hot water heater, but there have been occasions where we get a torrential rain which overcomes the drains in the window wells. As a result I keep everything a few inches off the floor.
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Old 24th November 2008, 12:22 PM   #6
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I agree with what hollowstate said... hopefully those things will still be ok after drying out. Good Luck
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Old 24th November 2008, 01:15 PM   #7
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Electrolytics would soon die if they weren't water tight. I'd rinse with clean water, and maybe scrub the ends with a tooth brush if necessary, then bake dry at a low temperature. You might even consider putting them through the dishwasher in a mesh bag with two caveats- no dishwasher detergent, as this damages aluminum, and don't use the heated dry setting- probably too hot.
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