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4hv.org :: Forums :: General Science and Electronics
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PSU caps leaking?

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Genocyde
Tue Dec 29 2009, 02:21AM Print
Genocyde Registered Member #1575 Joined: Sun Jul 06 2008, 12:21AM
Location:
Posts: 6
So, I took apart my old computer's PSU, and there is this yellow stuff all over the tops of the capacitors, but besides that, the caps look fine. They aren't venting or bulged. Do you think it's leaked electrolyte? Or could it be something else?

I'd post a picture but I don't have a digital camera, and can't find the cord to hook my phone up to the computer. Probably can't say much without a picture though.
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Zeus
Tue Dec 29 2009, 02:34AM
Zeus Registered Member #2316 Joined: Tue Aug 25 2009, 03:04AM
Location: Bendigo, Australia
Posts: 107
Just to be sure, smell the yellow stuff. if it smells something like fish it has leaked, it sounds like it has leaked anyway but it doesn't hurt to check.
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rp181
Tue Dec 29 2009, 03:48AM
rp181 Registered Member #1062 Joined: Tue Oct 16 2007, 02:01AM
Location:
Posts: 1529
its not. The yellow stuff is a silicone (i think) compound manefacture's will put on there. Some times its yellow, clear, grey, or tan. Touch it, it will be soft, you can just scrape it away.
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Zeus
Wed Dec 30 2009, 06:44AM
Zeus Registered Member #2316 Joined: Tue Aug 25 2009, 03:04AM
Location: Bendigo, Australia
Posts: 107
I was under the impression that it was clear (somewhat). If it's not clear then ignore it.
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