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#1 |
Badcaps Veteran
Join Date: Dec 2012
City & State: Bedford
My Country: Bedfordshire
I'm a: Knowledge Seeker
Posts: 454
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#2 |
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: 24,107
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![]() yes, but usually you see the negative terminal leak first.
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#3 |
Badcaps Veteran
Join Date: Dec 2012
City & State: Bedford
My Country: Bedfordshire
I'm a: Knowledge Seeker
Posts: 454
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![]() Might answer why the unit don't switch on,
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#4 |
HC Overclocker
Join Date: Jul 2012
City & State: Singapore
My Country: Singapore
Line Voltage: 240VAC 50Hz
I'm a: Hobbyist Tech
Posts: 2,712
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![]() interesting! its leaking gold coloured stuff? lol! might it be iron pyrite or fool's gold? rofl!
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#5 |
master hoarder
Join Date: May 2008
City & State: VA (NoVA)
My Country: U.S.A.
Line Voltage: 120 VAC, 60 Hz
I'm a: Hobbyist Tech
Posts: 10,174
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![]() That ooze almost looks like the tan/brown glue that goes conductive. But I don't see that kind of glue anywhere else on the board, so I don't think that is it. Very surprising that it is leaking out of the positive terminal. As stj said, usually they do it on the negative one. And yeah, that very likely be the reason for not getting power. Just hope nothing else has blown when that cap went.
Also curious what brand of capacitor is that? |
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#6 | |
Senior Member
Join Date: Jan 2018
City & State: Lancaster, PA
My Country: United States
Line Voltage: 120VAC 60Hz
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Posts: 144
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![]() Quote:
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#7 |
master hoarder
Join Date: May 2008
City & State: VA (NoVA)
My Country: U.S.A.
Line Voltage: 120 VAC, 60 Hz
I'm a: Hobbyist Tech
Posts: 10,174
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![]() Yup, Taicon it is.
A little surprised, though. Generally, I see them fail a lot less than other 2nd tier brand and expect them to fail less. But I suppose that doesn't mean too much when it comes to 2nd tier caps. ![]() |
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#8 |
Badcaps Veteran
Join Date: Aug 2013
City & State: Maritimes
My Country: Canada
Line Voltage: 250V Split-phased, 60 Hz
I'm a: Hobbyist Tech
Posts: 49
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![]() Indeed, I've also seen failed Taicon primaries. I have actually seen more failed primaries than secondary caps from them. I would say failure rate for primaries is about on par as with Samxon, especially if in APFC.
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#9 |
master hoarder
Join Date: May 2008
City & State: VA (NoVA)
My Country: U.S.A.
Line Voltage: 120 VAC, 60 Hz
I'm a: Hobbyist Tech
Posts: 10,174
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![]() Well, APFC is a whole another story. Even good Japanese caps fail there sometimes, particularly if the manufacturer penny-pinched and used 85C -rated caps instead of 105C -rated caps... and also 400V caps instead of 420V or 450V caps. Going with 105C caps for higher rated voltage means bigger caps - which is quite necessary, because APFC puts more stress on the caps (lower ripple current than at 50/60 Hz, but at much higher frequency, so the end result is more stress on the caps than caps simply getting rectified DC straight from the line at 50/60 Hz.)
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