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#1 |
Member
Join Date: Dec 2020
City & State: athens
My Country: Greece
I'm a: Knowledge Seeker
Posts: 82
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![]() only few months new caps on my amp and today i want to set the bias and amp going in protect mode and start smoke.imediatly shout down open it and found this!!!!!! leak from one capacitor desolder and see two holes on the can.i suspect was there from beginning from transport maybe?the holes is from out to in is like a nail pin not like from screwdriver.realy angry about that.
Last edited by spiros.p; 12-19-2022 at 06:13 AM.. |
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#2 |
Member
Join Date: Dec 2020
City & State: athens
My Country: Greece
I'm a: Knowledge Seeker
Posts: 82
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![]() i have found what causes the holes is excactly the distance from other capacitor legs.during transport from supplier not right packet
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#3 |
Super Moderator
Join Date: Jan 2018
City & State: York
My Country: UK
I'm a: Knowledge Seeker
Posts: 14,034
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![]() holey smoke
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#4 |
Member
Join Date: Dec 2020
City & State: athens
My Country: Greece
I'm a: Knowledge Seeker
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![]() i hope don't get any more damage the amp i clean the electrolyte and measure the afected components looks all ok.wait for new creplacement
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#5 |
HC Overclocker
Join Date: Jul 2012
City & State: Singapore
My Country: Singapore
Line Voltage: 240VAC 50Hz
I'm a: Hobbyist Tech
Posts: 3,056
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![]() thanks. this is a cautionary tale for me not to use dented, holey or pierced caps. i've always wondered if it was okay to continue using them or to recap them at once. this answers my question. i shall stop using those stuff with dented, holey and pierced caps and recap them whenever i get the chance or spare time.
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#6 |
Solder Sloth
Join Date: Nov 2012
City & State: CO
My Country: USA
Line Voltage: 120VAC 60Hz
I'm a: Hobbyist Tech
Posts: 8,138
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![]() possible that the manufacturer put dents in the can so they can fit smaller windings of foil/separator in a bigger can so it won't rattle inside, at least I thought I've seen this in the past before?
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#7 |
Leaking Member
Join Date: Dec 2014
City & State: Atlantic Canada
My Country: Canada
Line Voltage: Ground, 0Hz
I'm a: Hobbyist Tech
Posts: 6,027
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![]() Weird. I’ve seen all kinds of dented caps, but not something like this. Almost looks like someone put a drill punch on the cap and drilled a perfect hole in there.
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#8 |
Great Sage 齊天大聖
Join Date: Dec 2009
City & State: Europe
My Country: some shithole run by Israeli agents
I'm a: Professional Tech
Posts: 29,107
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![]() crushed against another 10mm cap - someone probably stepped on the package!
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#9 |
Member
Join Date: Dec 2020
City & State: athens
My Country: Greece
I'm a: Knowledge Seeker
Posts: 82
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![]() yes i measure the legs from the cap and fits excactly on the two holes.wrong package and during transport hit each other. if i remember correctly the packet was to big and include some other smal components i have ordered semicontuctors and so on.is a wonder hold so long the cap.don't use a lot the amp since last winter maybe 50-60 hours til now.
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#10 |
Solder Sloth
Join Date: Nov 2012
City & State: CO
My Country: USA
Line Voltage: 120VAC 60Hz
I'm a: Hobbyist Tech
Posts: 8,138
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![]() Oh now I see the hole on the side in the dent... that's abnormal.
it wasn't underneath the heatshrink? This looks too suspicious to be something other than foul play... |
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#11 |
Member
Join Date: Dec 2020
City & State: athens
My Country: Greece
I'm a: Knowledge Seeker
Posts: 82
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![]() nippon SMH 6800mf 100v.to heavy and quality cap.let 4 of them free in a plastik bag and close in big paper box to travel 400km road and line ferry boat.accident warranty.
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#12 |
Member
Join Date: Dec 2020
City & State: athens
My Country: Greece
I'm a: Knowledge Seeker
Posts: 82
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![]() today replaced the capacitor the amp works again
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