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Bad Capacitors?

post #1 of 8
Thread Starter 
I'm not 100% sure where this best goes, but it involves a motherboard from an Intel system, so...

My sister's PC, some HP Pavilion Slimline from 2006 or 2007, has been acting up. It hasn't been in regards to stability that it's acting up (so far as I know). It's been acting up with regards to software woes, like pop-ups, perhaps spyware, etc., so she asked me to reformat the hard drive and reinstall the operating system.

Before doing this, I opened it to give it a cleaning. It wasn't terrible, as I expected of a lightly used and minimal fan system, but something else that may be terrible made itself known to me. Two of the capacitors look bad to me. Both have slightly bulging tops and look raised underneath (bulging on the bottom as well?). One also looks have leaked some.









The last picture gives you an idea of the motherboard and where the two iffy capacitors are. Actually, it appears there MAY be a third iffy one that I didn't even notice until looking at the pictures of it. In the third picture, one of the electrolytic capacitors even looks raised from underneath more than I'd believe it should (but that one may be okay, I don't know?). The rest appear okay.

She has mentioned nothing of instability. I have yet to turn it on for myself. If the system isn't unstable, what should I make of this? I presume it's not good, and that it might go any time now. She's going to love to hear this.
Edited by Princess Garnet - 4/21/11 at 12:43am
post #2 of 8
Yep all those are bad.

Soon they will go and your dead in the water.

If you know how to use a soldering iron then go to work. Grab some solder wick, flux and get those caps unsoldered. (solder sucker works the best BTW). Next look on the caps. If it says 6.3v 3300 uF then you want to get a 6.3v electrolite cap that is 3300 microferets
Edited by Lord Xeb - 4/21/11 at 12:45am
 
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post #3 of 8
They are on their way out. get the model numbers and if your decent with a solder gun, get to work. otherwise time to start scouring the egg.
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post #4 of 8
Yep. Caps are a pain the but to replace sometimes...
 
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post #5 of 8
Quote:
Originally Posted by Lord Xeb View Post
Yep all those are bad.

Soon they will go and your dead in the water.

If you know how to use a soldering iron then go to work. Grab some solder wick, flux and get those caps unsoldered. (solder sucker works the best BTW). Next look on the caps. If it says 6.3v 3300 uF then you want to get a 6.3v electrolite cap that is 3300 microferets
Really really really small mammals?

I keeeed, I keeeed. Please don't hit me!


(It's farad fyi )
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post #6 of 8
some ninja edited my answer as their own, XEB!
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post #7 of 8
Thread Starter 
I can't solder. Knowing her, she'll probably use it anyway until it does act up. It's a micro ATX PC/board though, so once that happens, it'll have to come down to either hunting down a used board and/or an entirely new system. She did get it for free and despite it's age and low power, it served her well (it's used for online school for degrees, Facebook, and light media). Time to give her the bad news...
post #8 of 8
Thread Starter 
Well... it gets better.









Inside the PC wasn't so dusty, but this was another story!

How is this thing still running with bad capacitors on the motherboard AND in the PSU?

Edit: Nevermind. I was installing Windows XP on it, and about ten minutes in, the PC just shut off. It fails to even attempt to boot back up. With the plug in, the PSU's rear light comes on, and as soon as you hit the power button, it goes out. Seems like the capacitor in the PSU is my guess. I guess I caught the capacitors right before it ended up finally giving out.
Edited by Princess Garnet - 4/21/11 at 4:05am
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