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Old 17th April 2009, 11:57 AM   #1
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Default Blackgate cap leg is unplugged help

hi guys

i accidentally unplugged one of the leg of the blackgate caps. a little bit of somekind of oil is coming out. i plug it back and run small voltage and its still working. still have the same capacitance

my question:
is it will last as undamaged blackgate? or i better of get a new one?
how is the blackgate stop working? is it shorted or open?

TIA

Erwin
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Old 17th April 2009, 02:10 PM   #2
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I once put the legs of a smaller black gate f in shape and it started leaking electrolyte .
I threw it away.
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Old 17th April 2009, 04:47 PM   #3
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hmm

i think when i solder it in, there is a sound like hot rod inside a water....

however its inside the circuit now. been servicing for few hours and no sign of electrolyte leakage

should i throw it away?

erwin
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Old 17th April 2009, 09:52 PM   #4
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If it's leaking electrolyte,I'd replace it.
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Old 18th April 2009, 03:02 AM   #5
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so i should be fine if there is no leaking on the pcb?

tia

erwin
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Old 19th April 2009, 10:37 AM   #6
impsick is offline impsick  United States
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if the lead came off and electrolyte came out its best to just replace it. It will dry out in no time. there may not be problems now but there will be.
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Old 19th April 2009, 11:31 AM   #7
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Thanks for the inputs. I just replace it for the peace of mind. Turn out it still measure same uf.

What's the possibility of electrolytic fail and short? Do they fail open or short?

Tia

Erwin
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Old 19th April 2009, 10:10 PM   #8
impsick is offline impsick  United States
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i dont think it would fail. just dry out and age faster then normal. Peace of mind is good enough reason for me to do the same.
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Old 19th April 2009, 11:33 PM   #9
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Not a suggestion just a question out of interest. If one were to use epoxy (or other similar or better material) to seal it back up, would it be again as trustworthy as the original?
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Old 24th April 2009, 03:21 PM   #10
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To answer the above...not likely. The foil in the cap is bonded to the lead. When the lead comes out, the foil is torn.

When the lead is reinserted, the lead merely touches the foil instead of being bonded to it. Intermittent failures could be a significant issue, especially if the cap is subject to vibration.


If its not sealed up at all, it will dry out and fail sooner. It will likely fail open circuit.
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