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#2161 |
Badcaps Veteran
Join Date: Oct 2009
City & State: Thessaloniki, Greece
My Country: Greece
Line Voltage: 230VAC 50Hz
I'm a: Knowledge Seeker
Posts: 2,137
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![]() It has chip of the year 2003.
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#2162 | ||
master hoarder
Join Date: May 2008
City & State: VA (NoVA)
My Country: U.S.A.
Line Voltage: 120 VAC, 60 Hz
I'm a: Hobbyist Tech
Posts: 10,860
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![]() But that's the thing. Even if they aren't, that doesn't give your PSU an excuse to pollute the spectrum.
Hehe, read my last post above again. I said that without the EMI/RF choke on the input, the PSU creates and is susceptible to a lot of electrical noise - sudden changes in the voltage. Quote:
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Just recap it. And DEFINITELY remove/re-arrange the dummy load resistors on the secondary side. Most likely, the 12V will have a 100 Ohm resistor, the 5V rail will have a 47 Ohm or 27 Ohm resistor, and the 3.3V rail will have a 10 Ohms or less resistor. Re-arrange these so that the 100 Ohm resistor is on the 5V rail, the 47 Ohm goes on the 3.3V rail, and the 12V rail is left with nothing (and the 10 Ohm resistor is also not used). You must absolutely do this resistor mod, otherwise those load resistors in their original spots will generate a lot of heat and cook your new caps (or shorten their lives considerably). |
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#2163 | ||
Badcaps Veteran
Join Date: Dec 2009
City & State: Northern Germany
My Country: Germany
Line Voltage: 230VAC/50Hz or 400VAC/3P/50Hz
I'm a: Knowledge Seeker
Posts: 1,259
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![]() Quote:
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Seen PSUs with worse heatsinks... I won't Have enough decent PSUs lying around here, so there's no need to recap it ![]() |
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#2164 |
Badcaps Veteran
Join Date: Aug 2005
City & State: San Jose, CA
My Country: USA, Unsure of Planet
Line Voltage: 120VAC, 60Hz & 115VAC, 400Hz
I'm a: Professional Tech
Posts: 3,399
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![]() Except for some caps that have failed that looks like it could be a decent ~250W P/S. The caps are low quality brands, but the P/S looks to be ~12 years old (mid 2002 date code on a small PCB). That's a decent lifespan, unless it was turned off most of the time. My guess is that some one sized it fairly conservatively.
If you finally do re-cap it I'd recommend replacing the MOVs protecting the I/P caps. After 12 years they've probably absorbed quite a few surges.
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PeteS in CA Power Supplies should be boring: No loud noises, no bright flashes, and no bad smells. **************************** To kill personal responsibility, initiative or success, punish it by taxing it. To encourage irresponsibility, improvidence, dependence and failure, reward it by subsidizing it. **************************** Anti-Covid-Vaxxer pig crap claim/prediction, Doctor: Heart Failure from mRNA Jabs "Will Kill Most People" | Principia Scientific Intl. ; Dr. Geert Vanden Bossche Warns COVID-19 Jab Injuries and Deaths Will Soon "Collapse Our Health System" (VIDEO) ; Fully Vaxxed May 2021; Since that time I've done 7 5Ks, 1 8K, 8 10Ks, and 4 half marathons |
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#2165 |
Badcaps Veteran
Join Date: Feb 2014
City & State: Fairfield, CA
My Country: USA
Line Voltage: 120V AC 60 Hz
I'm a: Knowledge Seeker
Posts: 502
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![]() A (damp) Delta DPS-800LB from an HP XW8600.
Let's ignore the dirty area surrounding the fireplace. As one might have guessed...Delta Fan. Not too terrible. Dual PCB design is interesting but it looks fairly decently built (to me anyways). |
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#2166 |
Badcaps Veteran
Join Date: Sep 2009
City & State: North Coast, NSW
My Country: Australia
Line Voltage: 240V 50Hz
I'm a: Professional Tech
Posts: 5,051
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![]() That thing is more than 'fairly decently built'. It's built like a tank. It should just about last forever.
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I love putting bad caps and flat batteries in fire and watching them explode!! No wonder it doesn't work! You installed the jumper wires backwards ![]() Main PC: Core i7 3770K 3.5GHz, Gigabyte GA-Z77M-D3H-MVP, 8GB Kingston HyperX DDR3 1600, 240GB Intel 335 Series SSD, 750GB WD HDD, Sony Optiarc DVD RW, Palit nVidia GTX660 Ti, CoolerMaster N200 Case, Delta DPS-600MB 600W PSU, Hauppauge TV Tuner, Windows 7 Home Premium Office PC: HP ProLiant ML150 G3, 2x Xeon E5335 2GHz, 4GB DDR2 RAM, 120GB Intel 530 SSD, 2x 250GB HDD, 2x 450GB 15K SAS HDD in RAID 1, 1x 2TB HDD, nVidia 8400GS, Delta DPS-650BB 650W PSU, Windows 7 Pro Last edited by c_hegge; 12-20-2014 at 10:58 PM.. |
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#2167 |
Badcaps Veteran
Join Date: Feb 2014
City & State: Fairfield, CA
My Country: USA
Line Voltage: 120V AC 60 Hz
I'm a: Knowledge Seeker
Posts: 502
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![]() Well, from a once $2000 base mode tower I would've expected a decent power supply.
Then again, there's the Powermac G5. |
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#2168 |
Badcaps Veteran
Join Date: Dec 2009
City & State: Northern Germany
My Country: Germany
Line Voltage: 230VAC/50Hz or 400VAC/3P/50Hz
I'm a: Knowledge Seeker
Posts: 1,259
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![]() Was hoping the DPS-500QB was something like that but it wasn't. Still it's not a bad PSU and the fan doesn't spin higher when fully loaded...
Do you guys wanna see something hecish? Or rather not? |
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#2169 |
Badcaps Veteran
Join Date: Feb 2014
City & State: Fairfield, CA
My Country: USA
Line Voltage: 120V AC 60 Hz
I'm a: Knowledge Seeker
Posts: 502
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![]() Go for it, never hurts to have more.
Anyways, here's my regular desktop one. We were watching a cat who was waiting to have his balls chopped and he decided to spray my old desktop. Opened this up to check for cat urine inside and thankfully it's safe. nSpire PSH650V-D. It's a Channel Well design, shared with a Thermaltake PSU. I assume it has PFC based on the marking on the label. Fairly well built, especially for an nSpire which is basically a no-name. The caps are a mix of Rubycon USC and Samxon. No bulging or leaking at all and this PSU has been in constant use since 2008. The fan is a Yate Loon fan. You can see the yellow where the cat urine got stopped - I guess that air deflector shield came in handy for saving this. |
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#2170 |
Badcaps Veteran
Join Date: Sep 2009
City & State: North Coast, NSW
My Country: Australia
Line Voltage: 240V 50Hz
I'm a: Professional Tech
Posts: 5,051
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![]() I've had a nearly identical power supply get bad samxon GF caps on the 5vsb output and cook the motherboard as a result.
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#2171 |
Badcaps Veteran
Join Date: Feb 2014
City & State: Fairfield, CA
My Country: USA
Line Voltage: 120V AC 60 Hz
I'm a: Knowledge Seeker
Posts: 502
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![]() I'll keep on a lookout for bad caps. I pop it open once a year for dusting anyways since this sits on the floor and we have cats.
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#2172 |
Badcaps Veteran
Join Date: Dec 2009
City & State: Northern Germany
My Country: Germany
Line Voltage: 230VAC/50Hz or 400VAC/3P/50Hz
I'm a: Knowledge Seeker
Posts: 1,259
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![]() Here the Pics of a HEC 350MR-PTD, Dual fan (80x15mm), 18A on +5V, 33A +5V and 28A 3,3V. Combined 220W. With pPFC...
And there's something about this unit that's rather uncommon nowadays for HEC. You may guess what ;-) |
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#2173 |
Badcaps Veteran
Join Date: Feb 2014
City & State: Fairfield, CA
My Country: USA
Line Voltage: 120V AC 60 Hz
I'm a: Knowledge Seeker
Posts: 502
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![]() Got a couple headphone amps as a present in the mail and was quite surprised at the weight of it, I mean they're two single 12AU7\6DJ8 amps.
This was also in there, a General Signal Sola SLS-24-024 in an ATX PSU case. It's a 24V, 2.4A linear PSU with a fairly beefy transformer and a fairly large cap (50V, 10,000uf) compared to what the stock wall wart would be with the outputs connected to a barrel plug. Large cap is marked "105C TAIWAN RICHEY" and the small cap is a United Chemicon KME 35V 1000uf and the smallest cap is a Chemicon KME 50V 47uf. |
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#2174 | ||
CapXon Be Gone
Join Date: Sep 2011
City & State: Idaho
My Country: USA
Line Voltage: 120VAC 60Hz
I'm a: Hardcore Geek
Posts: 3,216
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#2175 |
CapXon Be Gone
Join Date: Sep 2011
City & State: Idaho
My Country: USA
Line Voltage: 120VAC 60Hz
I'm a: Hardcore Geek
Posts: 3,216
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![]() This was a fun PSU to work on...One of those generic "could be PFC" units, it's a solid design but the build quality on this one was terrible. UL number leads to Raidmax, and the fan gives it away as well. They did a "grab bag" when it came to caps: JEE, Ltec, SWC, Su'scon, JunFu. And the date codes ranged from early 2006 to early 2008
![]() Sooooo, the build quality....Look at that soldering. It's terrible! And look at how suspended some of the caps are, especially that Su'scon on the 5VSB. And get this....one of the caps on the 12V filtering (C37) was installed at the factory with pressure pulling on the negative lead. When I went to desolder it, I desoldered the positive lead first, and the thing fell out! I could tell that only the positive lead was soldered in for quite some time, judging by the dust and color of the negative lead. I've never thought about this: How would this affect the filtering on the 12V rail if the ground wasn't connected on that cap? I recapped it, oiled the fan, moved the fan thermistor to the secondary heatsink, and cleaned up some of the soldering. How much wattage do you think this thing could pump out? I'm thinking it could at least do 425W continuous no problem, although the primary FET might limit it to less than that. The fan controller is fairly aggressive. |
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#2176 | ||
Badcaps Veteran
Join Date: Sep 2009
City & State: North Coast, NSW
My Country: Australia
Line Voltage: 240V 50Hz
I'm a: Professional Tech
Posts: 5,051
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![]() Quote:
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I'm kind of thinking 350 or so, simply because that about all that power supplies based on the STF topology are capable of. It might do a bit more, though, as it has a fairly beefy primary heatsink. |
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#2177 | |||
CapXon Be Gone
Join Date: Sep 2011
City & State: Idaho
My Country: USA
Line Voltage: 120VAC 60Hz
I'm a: Hardcore Geek
Posts: 3,216
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#2178 | |
Badcaps Veteran
Join Date: Dec 2009
City & State: Northern Germany
My Country: Germany
Line Voltage: 230VAC/50Hz or 400VAC/3P/50Hz
I'm a: Knowledge Seeker
Posts: 1,259
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![]() Quote:
But that only has one fan and is awfully loud. Yeah, they don't use them anymore. They rather use Su'scon.... That was also the funny thing about the 700W Cougar unit. NCC Primary and Su'scon secondarys... |
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#2179 | ||
CapXon Be Gone
Join Date: Sep 2011
City & State: Idaho
My Country: USA
Line Voltage: 120VAC 60Hz
I'm a: Hardcore Geek
Posts: 3,216
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#2180 |
Badcaps Veteran
Join Date: Sep 2009
City & State: North Coast, NSW
My Country: Australia
Line Voltage: 240V 50Hz
I'm a: Professional Tech
Posts: 5,051
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![]() What's the RDS-on? That matters just as much as the rating. There's a reason why I had one Hipro D3057F3H which managed 450W for a few minutes (before the secondary side overheated and the OTP kicked in) with a 7A FET, while another one blew a 9A FET under the same conditions. The 9A FET had a 32% higher RDS-on than the 7A in the other unit. (0.91ohm vs 1.2ohm)
Last edited by c_hegge; 01-08-2015 at 11:47 PM.. |
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