Howdy folks,
I've risen from the grave to ask more questions about old obsolete Dells.
I've acquired a Dell Dimension 4550 which is in need of a PSU - I've several PSUs from Dell Dimension B110s, and I'm wondering if one of them could be used. The PSUs and the 4550 use a 20-pin connector and a 4-pin connector.
The issue is, I've been told that Dell really likes using proprietary hardware, and there were concerns about damage being caused by an incompatible supply. Because of this I'm assuming it's not just a simple plug-and-play and that there's more...
SwedishDiesel
P4 Enthusiast
Last Activity: 11-28-2023, 06:27 PM
Joined: 10-29-2021
Location: Connecticut
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Dell Dimension PSU Compatibility - B110 PSU in 4550
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Re: AsRock P4i65G polycap/polymod advice?
I've asked similar questions in the past regarding capacitance and ESR with poly caps, see here: [url]https://www.badcaps.net/forum/showpost.php?p=1081311&postcount=2[/url]
As far as I know high ripple and lower ESR are ideal for motherboards.
It is an older board so I suppose you could replace the caps for peace of mind, but if they look fine you might as well leave them.Re: AsRock P4i65G polycap/polymod ad... ESR with poly -
Panasonic caps - dried electrolyte on leads/bung from factory?
I just bought these from Mouser and upon closer inspection the area where the bung and leads meet has some dried green substance on it, presumably dried electrolyte. Is this normal?... -
Re: Dell Optiplex GX260 - Advice Needed for Polymodding Motherboard
Alright, caps are off the power supply, here's what we got:
LTec LZG:
- x1 16v 1500uf
- x1 10v 2200uf
- x4 6.3v 2200uf
- x1 25v 470uf
- x1 10v 470uf
LTec TK - these are general purpose capacitors according to the data sheet, which I found really weird since they're from a power supply. I can't find a proper impedance/ESR rating for these, so I'm not sure if it's relevant here or not. An impedance ratio is listed, but not ESR or impedance.
-...Leave a comment:
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Re: The Hall of Shame - Badcaps Photo Montage
Yeh, this PC is from 2002 so it's within the bad caps era for that series.Leave a comment:
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Re: The Hall of Shame - Badcaps Photo Montage
I'm not sure, but I believe it was taken out of service many years ago. I don't have much info on it but if I had to guess it was put into storage after it blew a cap or two.Leave a comment:
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Re: Dell Optiplex GX260 - Advice Needed for Polymodding Motherboard
Hello friends, it’s been a while.
The motherboard has been fully recapped, and it turned out very well. My soldering is a bit messy, but as far as I can tell there are no issues.
I did stick with the Wurth polymers I linked prior, despite some skepticism towards their capacitors. Wurth generally makes good products, so I’m not particularly worried. If in doubt, this project will serve as a case study for whether or not these caps are any good (though maybe not a great case study since...Leave a comment:
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Re: The Hall of Shame - Badcaps Photo Montage
Kaboomf.
Nichicon HM caps from the Optiplex I'm fixing. Don't mind the odd camera angles....Leave a comment:
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Mystery Nichicon 22uf 25v Caps
Howdy folks,
The GX260 strikes again, I just now noticed that a bunch of smaller caps on the motherboard are bad.
There's no indication of what series these are, but they have the same color wrap as the HM series. They're rated at 22uf and 25v and about 5mm x 6.5mm. The only other markings are the temperature rating (105 degrees Celsius) and what I assume is a date code - A236. The data sheet for the HM series doesn't include caps with these ratings. I've attached some images of the caps themselves and where they are/were on the motherboard.
Does anyone... -
Re: Dell Optiplex GX260 - Advice Needed for Polymodding Motherboard
Awesome, thank you once more for your input. The physical size of the caps shouldn't be an issue in this scenario, my main worry is the ratings. Everything seems to line up though so I will be ordering new caps very soon.Leave a comment:
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Re: Dell Optiplex GX260 - Advice Needed for Polymodding Motherboard
Slight overlook on my end, for the smaller 1800uf caps, they have an ESR of 16. Is a difference of 4 considered "within reason"?
Do you have any advice for safely servicing a PSU? Common sense is a given, but it doesn't hurt to take precautions. I don't know if there's a way that these things can be safely discharged.Leave a comment:
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Re: Dell Optiplex GX260 - Advice Needed for Polymodding Motherboard
Cheers, I'll have me a look at the PSU as well. Thank you very much for your input. It may take a bit but I'll be sure to give updates on the project when I can.Leave a comment:
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Re: Dell Optiplex GX260 - Advice Needed for Polymodding Motherboard
@Per Hansson - Thank you very much for your input. I assume the 200uf difference isn't a significant issue then for either of the caps I need to replace, as long as the ESR and voltage are (mostly) the same?Leave a comment:
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Dell Optiplex GX260 - Advice Needed for Polymodding Motherboard
Howdy folks,
I have an Optiplex GX260 that blew a couple of those troublesome Nichicon HM series (ultra low ESR) electrolytic capacitors. Because said caps are obsolete, they are pretty much impossible to find on the market; I did find a listing for some but I believe they are counterfeit. I feel the easiest thing to do would be to replace all the blown caps with polymer ones. I am by no means an expert in electronics, and I've found a fair bit of conflicting information, so any guidance or confirmation would be greatly appreciated. While from a practical standpoint it's not worth... -
Re: New Members - please post your introductions here
Howdy folks,
I go by SwedishDiesel or Stockholm. I'm an aspiring PC enthusiast from the eastern US with a fascination in all things technical. Currently, I'm going down a capacitor rabbit hole after dealing with those troublesome Nichicon HM caps. That's all I have for now, I shall see you folks in the next thread, stay tuned.Leave a comment:
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