Is this a blown cap or just glue?

[SonicIce]

I'm thinking blown caps.:hmm:. The yellow stuff being glue but the brown stuff is blown capacitor?

The PSU still works it just has an issue where when I turn off the computer it flickers on and off unless I turn the PSU switch off.:\

 

[TemjinGold]

Yeah... I don't think that's glue...

You haven't been umm... taking care of yourself with the side panel off, have you?

 

[nickbits]

2nd vote for not glue

 

[Meghan54]

I don't even think the "yellow" stuff is glue as you can see the power supply manufacturer used white caulk everywhere else, and usually the tops of caps aren't covered.

Just scrape off some of it and look. I'd guarantee you'd find at least one cap bulging (plainly visible in your pic) and probably leaking, if not more.

 

[SparkyJJO]

What make/model PSU is it?

The two caps on the right with the blue labels are crap (Fuhjyyu is epic fail in the land of caps) and are venting. The crusty brown stuff is the guts of the cap puking out. They're shot.

The two green ones on the left look to be Teapo and they are not venting, and are probably fine.

The yellow is indeed a glue, some PSU makers will glue the bundles of caps together and putting it on top is easier than on the bottom (and easier to get the glue off too).

The black one on the far right of the pic looks like it is probably Fuhjyyu too, so replace that while you're at it. Actually, replace ALL Fuhjyyu caps in there that have a vent stamp on the tops except for the large primary filter caps as those usually don't go bad. The really tiny ones don't have a vent stamp on the tops and rarely fail, so those would be OK to leave alone (plus they are a pain to get to).

 

[HOOfan 1]

I wonder what it would look like if you put an oscilloscope on that sucker...

 

[PottedMeat]

I wonder what it would look like if you put an oscilloscope on that sucker...

Assuming it boots, at low load the ripple probably won't look too bad. But as soon you start using the thing the ripple will go nuts and they'll heat up :awe:.

 

[SonicIce]

Thanks guys. The unit is a 350 watt Antec SL350. It's strange because even though those caps are blown it actually works fine except it doesn't shut off completely without flipping the switch. And it's powering a system which is probably pushing it (6800GT at Ultra speeds and 6800U recommended a 430w PSU). And I found an older Picture that I took about 3 years ago for some reason where it's clear that the caps aren't blown so there's no question now.

So how exactly do I replace the capacitors on a power supply without killing myself? And do you think it would fix the not-shutting-off problem?

 

[HOOfan 1]

it may power the computer...but the ripple is likely slowly killing your components.

 

[notposting]

So how exactly do I replace the capacitors on a power supply without killing myself? And do you think it would fix the not-shutting-off problem?

Spend $40 on a new psu.

or

I've done motherboard cap replacement but not a psu. Just do it the same way, remove the old ones, get specs and order replacements, document what goes where in what orientation and pop the new ones in.

And don't electrocute yourself

 

[SparkyJJO]

Thanks guys. The unit is a 350 watt Antec SL350. It's strange because even though those caps are blown it actually works fine except it doesn't shut off completely without flipping the switch. And it's powering a system which is probably pushing it (6800GT at Ultra speeds and 6800U recommended a 430w PSU). And I found an older Picture that I took about 3 years ago for some reason where it's clear that the caps aren't blown so there's no question now.

So how exactly do I replace the capacitors on a power supply without killing myself? And do you think it would fix the not-shutting-off problem?

I figured it was an older Antec. Old Antecs were filled with Fuhjyyu caps. Teapos weren't common though, interesting that you had a pair in there.

I'll bet the voltages aren't right when measured with a DMM. I'll bet the two smaller caps for the +5VSB are failing too, because those can cause the power on/off issues you're seeing.

Given what it is though, I wouldn't consider it worth recapping, unless you wanted to for educational purposes. I'd probably just replace that unit with a new one. For example:

http://www.newegg.com/Product/Produc...82E16817371033

$40, free shipping, 80+ certified... hard to go wrong with that.