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Old 11-03-2017, 12:07 AM   #1
vince88
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Default Dell Optiplex GX620 with Oozing Rubycon caps

Unit is a Dell Optiplex GX620 tower with an Intel Pentium-D945 3.4GHz, 3.5GB RAM DDR2 and a 250GB SATA drive.
Units does not boot up. MoBo (see pic 'mobo') has two clusters of oozing caps, one around the CPU/GPU (see pic 1) and one around the extra 4-pins 12V power plug (see pic 2). All caps are Rubycon, see pic 3.
Attached Images
File Type: jpg MoBo.jpg (164.6 KB, 17 views)
File Type: jpg caps-1.jpg (96.2 KB, 15 views)
File Type: jpg caps-2.jpg (77.7 KB, 14 views)
File Type: jpg caps-3.jpg (83.9 KB, 11 views)
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Old 11-07-2017, 09:52 PM   #2
momaka
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Default Re: Dell Optiplex GX620 with Oozing Rubycon caps

Yep, nothing new here. Bad Chemicon KZJ and RUbycon MCZ in a Dell mini-bake oven PC. Those Pentium D chips put out a lot of heat, and in a small case, just about any regular electrolytic cap will cool. So if you do recap it, you might want to use polymers (i.e. polies). And maybe see if you can add an extra fan in the system or otherwise optimize the cooling. Generally, those Dell cases have decent cooling, but it's just that the P4/PD CPUs they use produce too much heat for that case.
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Old 11-07-2017, 11:17 PM   #3
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Default Re: Dell Optiplex GX620 with Oozing Rubycon caps

The OP specified that it is a tower, which sounds like a mid tower case to me, not a SFF or slim (thin) desktop.

Quote:
Originally Posted by momaka View Post
Yep, nothing new here. Bad Chemicon KZJ and RUbycon MCZ in a Dell mini-bake oven PC. Those Pentium D chips put out a lot of heat, and in a small case, just about any regular electrolytic cap will cool.
Donít you mean cook?

Quote:
And maybe see if you can add an extra fan in the system or otherwise optimize the cooling.
Or to optimize the cooking?

Just giving you a hard time. Not trying to make fun of you.

Iíd say what accounts for the failures is that Rubycon MCZ simply donít handle heat well, and Chemi-con KZJ are unstable even on the shelf.
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Old 11-07-2017, 11:57 PM   #4
momaka
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Default Re: Dell Optiplex GX620 with Oozing Rubycon caps

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Originally Posted by Wester547 View Post
Don’t you mean cook?
Hmm, I did. But I was holding a cool beer while typing this, so maybe that's why. And also because it was my second beer for the night instead of having a proper dinner. Oops.
I bet I will wake up tomorrow to an inbox full of badcaps.net emails/threads with people correcting my posts from tonight, lol.
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