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Old 14th January 2007, 11:16 PM   #1
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Default Leaky Caps?

I found these caps in my Luxman R-115 I just powered up after probably a decade of rest in someones basement. The orientation is correct, this brown stuff is on the topside of the cap, I'd expect it to run down, so I'm not sure if it came from the cap. No other brown like this anywhere in the unit. I'm not sure if it is leaking from the cap, could it possibly be some kind of glue? It is not liquidity, it is dry. The caps read .08 on my ESR and they are daisy chained, so the value is good. They are 1000uF/35volt. The unit does act a little funny, I think the filter caps may be bad, but that is a subject of another post. Should I change these, though they read fine?
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Old 14th January 2007, 11:36 PM   #2
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Looks like glue to me, but you might want a second opinion.
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Old 14th January 2007, 11:59 PM   #3
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Looks like glue to me too.
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Old 15th January 2007, 12:05 AM   #4
SY is offline SY  United States
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Is this under a perforated portion of the cover?
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Old 15th January 2007, 02:24 AM   #5
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"Is this under a perforated portion of the cover?"

Yep. The entire topside has perforations on this unit, these caps are directly below. And there was a huge glob of wax on the mainboard towards the back and on some of the rear connectors. The previous owner was using the receiver as a candle holder, apparently...
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Old 15th January 2007, 06:02 AM   #6
Nordic is offline Nordic  South Africa
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They sure made em big in the good ol' days hey... at least if the bug bites, those will be cheap swapouts, and you could easily even get higher capacitance caps in there in the same size....
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Old 15th January 2007, 12:34 PM   #7
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I have some NOS 50v 2200uf Nichicon VX caps you can have for the low low price of FREE! They are approximately 18mm x 35mm. If you think you can make them fit just drop me a mail with your addy.

Pic of caps
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Old 15th January 2007, 04:49 PM   #8
radtech is offline radtech  United States
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Quote:
Originally posted by pinkmouse
Looks like glue to me too.
Yup, definitely glue, seen this stuff plenty of times. Looks like they used it on these caps because they're mounted horizontally, didn't want the weight of the cap pulling on the leads.
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Old 16th January 2007, 02:02 AM   #9
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Quote:
Originally posted by theAnonymous1
I have some NOS 50v 2200uf Nichicon VX caps you can have for the low low price of FREE! They are approximately 18mm x 35mm. If you think you can make them fit just drop me a mail with your addy.

Pic of caps
Thanks for the offer, I think I have some similar caps laying around from an aborted PC power supply repair project. Anyways, given the measurements and the probability that it is glue (I found the fact that the stuff was on the topside rather than running down to be suspicious), I'm going to let alone for now.
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