Re: the gutless, bloated, and fried power supply hall of shame
Well, the input fuse looks zorched, but ignoring that, those input rectifiers, lightweight heatsinks (wrt heatsinks, heavy metal is pretty much always best), and small main transformer put its realistic power capability in the 150W-175W range. The skimpy output filtering means that thing will be noisy at any non-explosive output power.
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Re: the gutless, bloated, and fried power supply hall of shame
I suspect the Sapcons went dry on the Raidmax. I just got two iMicros and one happens to have been recapped with Samxons - I might pull all of them and swap them into the Raidmax and hope for the best.
If anything, I also suspect the 12v rectifier being dead (or both of them, I dunno yet.) as I found a 2x Molex to 6pin PCI-E adapter on it... not a good sign at all.
I might also have some spares to use for the Huntkey unit, as well as PI coils.
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Re: the gutless, bloated, and fried power supply hall of shame
Originally posted by PeteS in CA View PostWith those input rectifiers, the TO-220 switch devices, and the output heatsink I'd say the limit is 250W-300W. If the input lytics are 470uF, then 250W: if lower, then lower power; if highers then maybe 300W.
Also, I'm glad that you mentioned inductor materials and sizes in the past, because I've been paying more attention to this now and often finding that the output inductor tends to heat up quite a bit under load, especially when there is a large cross-load (i.e. too heavy 5V or too heavy 12V load.) In particular, T103-size toroids (1.03" diameter... or 25.5 mm) are usually used in PSUs rated for 300 Watts or less... though the power rating could be stretched a little if the material is type -52 *and* the PSU uses a faster switching frequency (typically single or double-forward designs only, and not half-bridge.)
That said, this PSU looks like it uses T103 size inductor, though I can't tell if it's -52 or -26 material. The material between the windings looks green, so it might be -52, which would be better.
Nevertheless, even with that, I still think this PSU won't be able to do more than 250W reliably long term.
Originally posted by Dan81 View PostThe PI coils are jumpered from what I could tell, but at least they can be installed.
Originally posted by Dan81 View PostAlso, ViPER22A for the 5VSB (or at least that's what I think it uses), and real 35 size transformer.
Originally posted by Dan81 View Post330uF HEC buggers that I doubt have anywhere near that value. (or evwn close to 200uF alone.)
Yeah, 330 uF on the primary... and that's if they're real capacity... 150-180 Watts tops.
Originally posted by Dan81 View PostI very much doubt it can do more than 100W safely, at least for now. The size of the cans makes me think they're barely 180uF or even less at best. And add a decade of usage on them and you won't even get 100W out of it.
Originally posted by Dan81 View PostAnyways, here's another classic that defines this thread. Won't power on when green/blsck are shorted, but it does produce 5vsb
Interesting that unlike Sun Pro's most designs using the proprietary AT2005B, this one uses an AT2008 PWM chip,aqnd claims to have protections.Last edited by momaka; 02-01-2023, 01:16 AM.
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Re: the gutless, bloated, and fried power supply hall of shame
I very much doubt it can do more than 100W safely, at least for now. The size of the cans makes me think they're barely 180uF or even less at best. And add a decade of usage on them and you won't even get 100W out of it.
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Re: the gutless, bloated, and fried power supply hall of shame
Yeah, 330uF might do for 200W (= decent 50/60Hz ripple, decent low line voltage and hold-up time at nominal line). 220uF or 270uf would be more like 150W. My experience at computer companies is with mini-computers, workstations, and servers, so I may be a bit conservative compared to what is tolerated with some lower-end desktops.
But actually running that thing at 400W+? For how many seconds or minutes, and are you wearing ear protection.
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Re: the gutless, bloated, and fried power supply hall of shame
330uF HEC buggers that I doubt have anywhere near that value. (or evwn close to 200uF alone.)
Anyways, here's another classic that defines this thread. Won't power on when green/blsck are shorted, but it does produce 5vsb
Interesting that unlike Sun Pro's most designs using the proprietary AT2005B, this one uses an AT2008 PWM chip,aqnd claims to have protections.Last edited by Dan81; 01-30-2023, 01:18 AM.
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Re: the gutless, bloated, and fried power supply hall of shame
With those input rectifiers, the TO-220 switch devices, and the output heatsink I'd say the limit is 250W-300W. If the input lytics are 470uF, then 250W: if lower, then lower power; if highers then maybe 300W.
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Re: the gutless, bloated, and fried power supply hall of shame
Didn't picture it but it should be the 2 pin header that's on the upwards of the image.
I didn't keep it open for long, just to dust it off.
It's a Huntkey (or at least that's what RealHardTechX claims in one of their PSU tables) and it looks like it has room for improvement. The PI coils are jumpered from what I could tell, but at least they can be installed. Also, ViPER22A for the 5VSB (or at least that's what I think it uses), and real 35 size transformer.
With enough tinkering, this might be a fine 350W unit, theoretically. Practically, I have to check whatever sillicon it uses and upgrade it as necessary.
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Re: the gutless, bloated, and fried power supply hall of shame
Originally posted by Dan81 View PostGuess it fits here. Came with a Conroe based Core 2 Duo E4600.
EDIT: Where's the fan???
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Re: the gutless, bloated, and fried power supply hall of shame
Originally posted by RukyCon View PostSide-by-side of a ThermalTake TR2-600NL2NC 600W PSU (left) and a ISO ISO-450 350W PSU (right). Notice any similarities?
https://www.badcaps.net/forum/attach...1&d=1674036591
If people are interested, I'll do a full pictorial of both of them, otherwise, I'm probably going to scrap both of them (since I have far better PSUs).
Originally posted by RukyCon View PostThe ISO seems okayish, the ThermalTake seems mostly undersized.
In the case of your ThermalTake up there, I can see even an IC for the 5VSB, which is always nice for safety of the 5VSB circuit. Also, it has large TO-247 BJTs for the main switchers and 680 uF primary caps. With good caps on the output, it should definitely be capable of 350W. Maybe even 400W for a few moments. Not a bad PSU, IMO. I'd save it over anything with APFC any day.
BTW, another tell-tale factor I use for deciding if a PSU is worth keeping: if it's an older design (like the above) and if it has a T130 -size output toroid (1.3 inch / 33 mm diameter), it's probably worth saving. PSUs with T103 -size toroids (about 1" or 25 mm diameter) are a coin toss... though - if it's a T103-52 core (light green colored core with blue on one side), it's good. If it's T103-26 (yellow colored core with white on one side), it's about the same as every other generic 200/250W PSU.
BTW x2, looking back some pages, I realized I forgot to reply back to your PM about a scrap 5VSB transformer (though, I'm guessing you probably don't have it anymore?) Anyways, I'll PM you shortly. Sorry about that.Last edited by momaka; 01-18-2023, 10:57 PM.
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Re: the gutless, bloated, and fried power supply hall of shame
Originally posted by RukyCon View PostSide-by-side of a ThermalTake TR2-600NL2NC 600W PSU (left) and a ISO ISO-450 350W PSU (right). Notice any similarities?
If people are interested, I'll do a full pictorial of both of them, otherwise, I'm probably going to scrap both of them (since I have far better PSUs).
The ISO seems okayish, the ThermalTake seems mostly undersized.
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Re: the gutless, bloated, and fried power supply hall of shame
Side-by-side of a ThermalTake TR2-600NL2NC 600W PSU (left) and a ISO ISO-450 350W PSU (right). Notice any similarities?
If people are interested, I'll do a full pictorial of both of them, otherwise, I'm probably going to scrap both of them (since I have far better PSUs).
The ISO seems okayish, the ThermalTake seems mostly undersized.
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Re: the gutless, bloated, and fried power supply hall of shame
The model number suggests it's a 200W/150W power supply (or maybe the PCB is used for 150W and 200W models). Anyway, the 220uF input caps are about right for 150W. Based on possible clues in the S/N and numbers on the magnetics, I'm going to guess the power supply is 1996 vintage.
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Re: the gutless, bloated, and fried power supply hall of shame
I would beef it up a bit and keep it should you ever find the desire to build an retro AT machine.
Maybe a personal preference but I would rather put 2-4 hours of work in beefing up an AT unit (which I did to an Essun 200W AT PSU) than having to fiddle with an adapter and an ATX PSU.
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Moretek MPS-200/150 Power Supply
So here is a power supply that i found in the trash, the PSU appears to be rather old judging by the external switch and minimal output leads.
Label:
Looking at the label, we don't really get much info about the PSU, other than its a 230w unit, and that i shouldn't be taking it apart in five different languages, but that ain't gunna stop me cuz i can't read most of them.
Anyway, here is the forbidden insides (AKA, the board overview):
Well, there isn't a lot to see in here, and TBH, i was kind of suprised when i saw how empty it was inside, mainly because this PSU had a bit of weight to it, but as it would turn out, most of that was in the (suprisingly decent) case this board was placed in. Also, we finally find a proper name and model to go to this unit, Moretec. Now i couldn't find much about them, but the few things i did find were supringly decent, so it's a shame that they stooped so low for this unit, but maybe it could be salvaged.
Primary side:
So in terms of input filtering, it has no input filtering, not even the usual fake Y-class capacitors, we do however, have an NTC themistor and a fuse, a rather cheap looking fuse, but a fuse none the less. The bride rectifier is made up of 4 1n4007 diodes, i want you to look at how tiny and under-rated they are, i mean, they're 1 amp parts, and if this is a 240w PSU, then they would possibly be seeing up to twice their rated current under full load (at 120V, assuming 100% PSU effenicy, which is highly unlikely to be the case), and even at something like 75% load, they'd still be getting overloaded. Now the main capacitors are a pair of Rubycon YKs, rated 220uf, 200v, in which they test at 215uf and 225uf respectivly. They appear to be real Rubycons, which would probably make them some of the best quality parts in this PSU. The main switchers are a pair of (2S)C2810s in a standard dual-foward configeration. The main transformer is 33mm wide by about 29mm tall.
Secondary side:
The filtering for each rail is a follows:
12v: 2x PR3002 (100v, 3A) fast recovery diodes (mounted in a classic diode bracket configeration), Pi Coil (16~18 AWG, 20 turns, 5mm core), Luxon SM 1000uf, 16v capacitor.
5V: S10C40C (10A 40V) schottky rectifier, PI coil (12 AWG, 8 turns, 5mm core), 2x Capxon KM 1000uf 10v capacitors locaded on either side of the coil.
-12V: 3x PR152? (obstructed part number)(1.5A) fast recovery diodes, Capxon KM 470uf 16v capacitor
-5V: 2x PR152? fast recovery diodes, Capxon KM 470uf 16v.
The controller chip is a (TL)494CN, beyond that there,s not much else to note.
The Fan:
Just an older Yate Loon fan, still spins really well.
I'm not really sure what to do with this thing, maybe it might be worth beefing up a tad bit for projects and such, but i don't know.
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Re: the gutless, bloated, and fried power supply hall of shame
I doubt Topower had anything to do with the label, if at all.
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Re: ZUMAX Technology ZU4000W (X1)
Originally posted by momaka View Post4th... and I have to concur with Dan81 here: I don't think this PSU was made or designed by Topower. The label is indeed likely a BIG lie. The "LP" markings on the transformers and the PCB suggest Leadman Power - a.k.a. Powmax / Sun Pro. This is hands-down my least favorite PSU manufacturer... or most favorite worst manufacturer, I don't know anymore. If it was a Topower unit, those usually have "top..." or "ever-power" text on the transformers.
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Re: ZUMAX Technology ZU400W (X1)
I may actually try putting slightly beefier parts on the secondary and put this PSU into some junker PC that I plan on throwing together out of spare parts (just so I have something at my workbench for looking stuff up while working), and then I can see how many years, or (realistically speaking) months or weeks this thing lasts before giving up the ghost. Though, I won't be wasting any of my 'good' parts on this.
Originally posted by momaka View PostWhat? WHAT? ... WHYYYY?!
Originally posted by momaka View PostNo, they (Powmax / Leadman) actually got that part right... as if by a miracle.
But seriously, I do appreciate you going out of your way to explain that to me, as i'm pretty much fully self-taught when it comes to electronics like this, so this kind of info is the type of stuff i may normally not find online, at least not easily, so thank you.
Originally posted by momaka View PostIt WAS worth it - you saved someone else $8 from buying this POS... plus who know how much headaches for them, if they aren't as well-versed in electronics/PSUs/computers as you are. For all you know, you could have saved someone's really important data or only computer from blowing up / burning out when this PSU goes out. It may seem strange to think of it this way... but that's what it is, really.
Speaking of Savers, I actually picked up a couple PC PSUs from a local Savers recently, one of them needs a bit of work though (a full recap of the secondary).
Oh, and I also got a good chuckle or two out of the design of this PSU, which makes it slightly more worth it to me.
Originally posted by momaka View Post(Yes, don't try using this PSU at all is probably what should be meant.)
Originally posted by momaka View PostDo any of the cables have a valid UL number or other certificate number? If not, I'd consider the ratings on them at least somewhat questionable - particularly the voltage one.
Originally posted by momaka View PostAt least with this unit you didn't get the cheapest crap heatsinks, though, unlike this Sun Pro KY-480ATX.Last edited by RukyCon; 03-15-2022, 03:03 AM.
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