Blackgate cap leg is unplugged help

milen007 · 17th April 2009, 10:57 AM

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

Bernhard · 17th April 2009, 01:10 PM

I once put the legs of a smaller black gate f in shape and it started leaking electrolyte .
I threw it away.

milen007 · 17th April 2009, 03:47 PM

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

DigitalJunkie · 17th April 2009, 08:52 PM

If it's leaking electrolyte,I'd replace it.

milen007 · 18th April 2009, 02:02 AM

so i should be fine if there is no leaking on the pcb?

tia

erwin

impsick · 19th April 2009, 09:37 AM

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.

milen007 · 19th April 2009, 10:31 AM

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

impsick · 19th April 2009, 09:10 PM

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.

Hearinspace · 19th April 2009, 10:33 PM

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?

hardwareguy · 24th April 2009, 02:21 PM

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.

17th April 2009, 10:57 AM	#1
milen007 diyAudio Member Join Date: Dec 2007	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

19th April 2009, 09:37 AM	#6
impsick diyAudio Member Join Date: Dec 2006	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. __________________ "Nothing happens for a reason. There are just reasons why things happen." Quote me on that. http://stores.ebay.com/AudioGrade?_rdc=1

19th April 2009, 09:10 PM	#8
impsick diyAudio Member Join Date: Dec 2006	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. __________________ "Nothing happens for a reason. There are just reasons why things happen." Quote me on that. http://stores.ebay.com/AudioGrade?_rdc=1

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
What if the speaker becomes unplugged?	aletheian	Chip Amps	2	9th April 2006 03:48 PM
pre hums - even unplugged!	Bill*B	Tubes / Valves	14	18th November 2005 01:22 AM
120 Hz Buzz Unplugged	dr._sleep	Tubes / Valves	4	17th September 2005 02:47 AM
ZAPpulse 2.2SE (non-blackgate)	mattjk	Swap Meet	0	9th February 2005 05:55 AM
BlackGate Capacitors	gchrist	Parts	5	6th June 2003 06:51 AM


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

17th April 2009, 01:10 PM	#2
Bernhard diyAudio Member Join Date: Apr 2002 Location: Munich	I once put the legs of a smaller black gate f in shape and it started leaking electrolyte . I threw it away.

17th April 2009, 03:47 PM	#3
milen007 diyAudio Member Join Date: Dec 2007	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

17th April 2009, 08:52 PM	#4
DigitalJunkie diyAudio Member Join Date: Apr 2003 Location: Portland,Oregon Blog Entries: 4	If it's leaking electrolyte,I'd replace it.

18th April 2009, 02:02 AM	#5
milen007 diyAudio Member Join Date: Dec 2007	so i should be fine if there is no leaking on the pcb? tia erwin

19th April 2009, 10:31 AM	#7
milen007 diyAudio Member Join Date: Dec 2007	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

19th April 2009, 10:33 PM	#9
Hearinspace diyAudio Member Join Date: Jun 2008	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?

24th April 2009, 02:21 PM	#10
hardwareguy diyAudio Member Join Date: Apr 2009	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.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read