Re: Dell Precision 470 Workstation
The system was hooked up to a ups so it had to be PSU side then. They sure did put a lot of white goop in thi thing. That stuff alone looks like bad air flow in itself.
Here is a pic...
Thank you to the guys at HEGE supporting Badcaps [ HEGE ] [ HEGE DEX Chart ]
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Re: Dell Precision 470 Workstation
Ah thank you! Did you see my post about the thyristor above?...
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Re: Dell Precision 470 Workstation
PCBONEZ,
Whats this 12VA, 12VB, 12VC stuff? I understand the others
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Re: Dell Precision 470 Workstation
I see a Thermister NTC1 is cracked. Looks like it let a little "bang-poof" onto the white plastic shielded card. The rest looks fine.
can just that one varible resistor be enough?
Im going to take off that big peice of copper to take a peek at the mack-daddy cap of them all! first im going to find my bleeder resistor...
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Re: Dell Precision 470 Workstation
[B]I'm GOING in![/B]
A power supply with a handle ought to tell one something all by itself. Especialy in a workstation series!Re: Dell Precision 470 Workstation
[B]I'm GOING in![/B]
A power supply with a handle ought to tell one something all by itself. Especialy in a workstation series!Re: Dell Precision 470 Workstation
[B]I'm GOING in![/B]
A power supply with a handle ought to tell one something all by itself....
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Re: Dell Precision 470 Workstation
So where is the lytics to poly conversion chart?...
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Re: Dell Precision 470 Workstation
(bold- bigcape)
Dell's pinouts on their PSU's I've been told are a standard of their own. How would you test the old PSU. I've got it setting right here!
Thx
Sean-Bigcape...
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Re: Dell Precision 470 Workstation
The 470 does not auto shut off if it was caused by bad cooling?
I actualy started by changing the PSU before the blown caps were discovered.
It will be interesting to crack open the OLD PSU!
How do i assure that is not any stored power in it? Are there bleed points where I can short out with a resistor or is it a self beeding PSU?
I never had "operated" on a PSU, just "test n replace"...
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Re: Dell Precision 470 Workstation
If my board is already a poly mod or a later production (im going for the latter because the welds are not human!), the other caps's are the reveled Rubycon's...... Then
How do you test if here is a possibility that the VRM chip is damaged because a FET has shorted and therefore Vcore will be too high?
This type of testing and how is new and unexplored by me!
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Re: Dell Precision 470 Workstation
Im guessing the polys are the blue ones?
Why are Samxons "daring", expensive?...
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Re: Dell Precision 470 Workstation
Here is my actual board.
Thank you for all your help!...
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Re: Dell Precision 470 Workstation
I see that my white ballance was wayyyy off so I retook the shot:
[/IMG]...
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Re: Dell Precision 470 Workstation
I get it! I LIKE it too!
Fixing broke things is fun even if costs more in the end. Just some of the equipment I've ended up buying to fix a 5 dollar analog meter ended up costig me A WHOLE WORKSHOP and a new hobby.
Hell just a few weeks ago I set up a darkroom and so far have only had the time to make ONE print! (came out purdy good too!)
Look at my signature pic.... Thats a result of ONE bad harddrive....the rest is "History" as they say, i mean a MESS!
...Last edited by bigcape; 08-15-2010, 04:59 PM.
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Re: Dell Precision 470 Workstation
I hope this is not a thread jack..... but I am curious why you guys don't seem to like or talk about the 490 or 690.
I have 4 690's and 5 490's They are awesome machines. One of mine has quad core E5465 xeons 2.8Gz. the 490's have X5160 3.0Gz all dual procs and are screemers!
No offense but this is the only 470 I've had and in comparison it seems to be put together like Legos!
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Re: Dell Precision 470 Workstation
[COLOR="Sienna"]Oh yes i did and they are numbered on the board and polarity is clear[/COLOR]
[COLOR="sienna"]The ones that popped i had marked with a red sharpieI was not thinking I should pull all of them[/COLOR]
[COLOR="sienna"]might just be my pen marks?[/COLOR]
[COLOR="sienna"]All the ones I pulled were all 6.3v[/COLOR]
[COLOR="sienna"]Those are 16v 1000uF....Last edited by bigcape; 08-15-2010, 12:31 AM.
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Re: Dell Precision 470 Workstation
Hey all,
I was sent over here to get some advice on "poly caps"?
This was my Exchange 2007 server that crashed, umm.. burned up day before yesterday.
She gave no warning just quit. I have taken them out (but y'all say these are top caps so.....?) with a HAKKO 808 desoldering kit. (darn thing works fantastic!
Here I was thinking I was going to pop into RadioShack, but I now see that is not going to work as hoped
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