Lately my dell computer (dimension 4550) has been playing up so I checked it out only to find bulging caps on the board and even in the PSU. I don't have any 16v 3300uf caps laying around so the question is, Can I use 2200 uf caps? Does anyone else have this problem with this model?
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Re: Dell Dimension 4550 bad caps
Are you sure they're 3300uF 16V? The one Dimension 4550 I have seen used 2200uF 16V and 3300uF 6.3V caps, but no 3300uF 16V.
If the PSU has Arcon caps, they're junk. If the caps are any other brand, make sure the fan still works. The Dimension 4550 I saw had Asiacon caps, and they failed because the fan stopped working. -
Re: Dell Dimension 4550 bad caps
Sorry meant 6.3v caps. I got a broken board yesterday and it has working 6.3 volt 3300uf ost caps so they are replaced. However there's another cap that's even more obscure. Its 6.3v 820uf to the right of the north bridge. All the caps on the board are united chemicon and yes the psu does have asiacon caps but they're all bulging. The fan does work though. I can't see the rating on these caps because there's a forest of wires in the way.Comment
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Re: Dell Dimension 4550 bad caps
I think those caps between the northbridge and RAM are killed by the ripple from the PSU. On the board I saw, they were Nichicon VR series and both caps next to the northbridge were blown.
There is a thread about those PSUs and tons of information about them. The Dimension 4550 I saw used a Dell HP-P2507F3C PSU. The HP-P2507F3CP is identical, aside from the addition of passive PFC. The values of the caps should be the same, but the four big Asiacon caps are a custom size.
Look here for more information (and my first few posts in this forum):
https://www.badcaps.net/forum/showthread.php?t=8411
This is actually my parents' computer, and it's still stable with all those bad caps.
Nichicon HM, Rubycon MBZ, or Samxon GD are exact replacements for the 3300uF 6.3V caps.Comment
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Re: Dell Dimension 4550 bad Nichicon HM caps
Opened an old & dead Dell Dimension 4550 model DHM manufactured 102502 that had been used as a COM server for a long time. Found 4 faulty caps alongside the CPU (P4 2.6GHz) with 2 oozing and 2 bulging. The 4 are Nichicon HM(M) 3300micF 6.3V 105degC marked H0238.Attached FilesComment
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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... -
The Symptom:
I own a Dell Dimension 8300 motherboard that will post and get to the black (XP pro 32bit) “We're Sorry Windows did not load” Screen.
When restarting any option i.e. “Normal” “Safe Mode” etc. Computer re-boots to same screen. I checked RAM with memtest –OK Checked O/S Drive with Victoria -OK
Upon Inspection:
I did a physical examination and see that the 6 caps by the CPU are all bulging in various degrees. (See Pics Below).
I found a YouTube vid with a guy who replaced these 6 caps and the computer works fine.... -
My question pertains to understanding the control circuity inside a Dell PT434 type battery used in Dell E6400, E6410 and other Dell notebooks?
Does anyone have a circuit diagram for the inside of a Dell PT434 battery and/or a description of how the control lines work to control this battery?
My reason for asking is I have a battery which I cannot get to charge beyond 1% in a Dell E6410 or E6400.
The LED bar graph charge indicator on the battery shows one LED lighted when the info button is pressed.
I have tried multiple different Dell power adapters. My Dell... -
I know I've been a little scarce lately (like the last 2-3 years), but I'm still here and still doing my thing with fixing PSUs.
For today's considerations, I have a Seasonic B12 BC-550 [A551bcafh] 550 Watt ATX power supply for you (click on links for full size images).
https://www.badcaps.net/filedata/fetch?id=3591771
https://www.badcaps.net/filedata/fetch?id=3591772
It's a modern ATX unit with fixed (non-modular) cables and an 80-plus bronze certificate. Here's the label:
https://www.badcaps.net/filedata/fetch?id=359177... -
Dell latitude 3500
Board BOLT-L UMA MB
17938-1
FW8G6$LA
when i press the power, fan goes full speed, power button lights up , and caps lock light is on, the screen polarises, goes dark,no backlight...All voltages present, except PL4701, but that's probably for GPU power later....
I've tried a few dumps from posts, it always acts the same, so i thin it's not a bios issue...
No shorts found on the board...
What should i try next?
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