the gutless, bloated, and fried power supply hall of shame

[c_hegge]

Re: the gutless, bloated, and fried power supply hall of shame

The UL Number on the PCB (E171766) points to Fai Wong Electronic PCB Co, but they are just a PCB manufacturer, so that doesn't tell us much about who actually assembled the PSU (maybe that's supposed to be Fail Wong Electronics )
The UL number on the case (E161870) returns no results at the UL database, so it's possibly forged.

I must say, though, that green logo on the transformer looks familiar to me. I can't remember where I've seen it, though.

[ttn328]

Re: the gutless, bloated, and fried power supply hall of shame

... just jumbered...

Sorry for misspelling ... jumpered

The UL Number on the PCB (E171766) points to Fai Wong Electronic PCB Co, but they are just a PCB manufacturer, so that doesn't tell us much about who actually assembled the PSU (maybe that's supposed to be Fail Wong Electronics )
The UL number on the case (E161870) returns no results at the UL database, so it's possibly forged.

I must say, though, that green logo on the transformer looks familiar to me. I can't remember where I've seen it, though.

Thanks for all your info. My friend paid 150000 vn dong (about 7 USD) for it, don't know how much power it could supply.

[ben7]

Re: the gutless, bloated, and fried power supply hall of shame

Looks like the transformer is so tiny, I bet it will saturate and blow the switching transistors before it reaches 450 watts xD

Atleast the heatsinks are somewhat decent, not just thick hunks of metal.

I wonder if those primary caps actually read 330uF, or if they read 220uF xD
Any way, those are tiny for a 450 watter.

[ttn328]

Re: the gutless, bloated, and fried power supply hall of shame

Yes, the transformer is very very small, it is smaller than the one of my Pen II Dell 200W PSU.

[Behemot]

Re: the gutless, bloated, and fried power supply hall of shame

Well at least there is room enough for some airflow inside

[mariushm]

Re: the gutless, bloated, and fried power supply hall of shame

Looks like the transformer is so tiny, I bet it will saturate and blow the switching transistors before it reaches 450 watts xD
.

450w !? You're lucky if that psu goes over 200 watts ! )

Those rectifiers on the secondary side are rated for 16A and 12A ... so it might do 3.3v @ 16a =53 w , 5v @ 16a = 80w , 12v @ 12a = 144w ... but the transformer itself is designed for 150-200 watts ..

[c_hegge]

Re: the gutless, bloated, and fried power supply hall of shame

I'd give it 200W without blowing up, but given how little output filtering it has, I doubt if it would be able to deliver anything at all with the ripple in spec.

[ben7]

Re: the gutless, bloated, and fried power supply hall of shame

450w !? You're lucky if that psu goes over 200 watts ! )

Yeah, I inferred the 450W from the label. Ofc, they always lie about the wattage rating

[momaka]

Re: the gutless, bloated, and fried power supply hall of shame

They definitely are getting better. They need to at least put a ball bearing fan in there though. And fix the fan controller.

Fix the fan controller? What fan controller?

These things are designed to run the fan on 12V all the time so they don't overheat. That's why the sleeve bearing fans in cheap power supplies die so quickly. Most of the time there's nothing wrong with the cheap sleeve bearing fans. A ball bearing fan will sure last longer but then the PSU will get filled with dust quickly and it will eventually overheat anyways. It's really best for them to have put bigger heat sinks and bigger parts - then the fan can be slowed down... But that costs extra $$.

VENR (fake ?) 450S-ATX

I'd give it 200W without blowing up, but given how little output filtering it has, I doubt if it would be able to deliver anything at all with the ripple in spec.

Exactly! Who cares about raw output power if the PSU's ripple is in spec only for a fraction of the wattage it can do.
With those tiny caps and inductors on the secondary, I'd say about 50W is the MAX usable power you can get out of it before ripple and noise go out of spec. I had a cheap L&C with a similar cap configuration on the secondary and it couldn't even power a 400 MHz Pentium II (24W TDP, 33W max) PC under full load! And all that computer had was a low-wattage S3 Savage 4 8MB video card and a single low-power Seagate HDD.

[Pentium4]

Re: the gutless, bloated, and fried power supply hall of shame

Check out this "Newegg special" piece of shit....When I opened the case I got a strong smell of burnt silicon and the classic smell of overworked electronics. It was powering a Core 2 Quad 2.33GHz, 4 sticks of RAM, 1 HDD and a 7600 GS. Pretty low load to be honest. Primary caps are Fuhjyyu and the rest are BH. At least they used Late Yoon fans, but the thing was annoyingly loud. Only two 1000uF 16V caps for 12V filtering

[mockingbird]

Re: the gutless, bloated, and fried power supply hall of shame

The chassis is black, that has to count for something...

[Pentium4]

Re: the gutless, bloated, and fried power supply hall of shame

The chassis is black, that has to count for something...

It just turned black from getting so hot due to 30% efficiency

[Behemot]

Re: the gutless, bloated, and fried power supply hall of shame

ERL-35 transformer, isn't it about 350 W continuous/400 W peak?

[Pentium4]

Re: the gutless, bloated, and fried power supply hall of shame

ERL-35 transformer, isn't it about 350 W continuous/400 W peak?

I think that's the only good thing on it. I might take the switchers though, it has two 13007's and a SW2N60

Uploaded a pic of the secondary. Look at those gross caps...Output rectifiers from left to right 30A, 20A, 30A

[Behemot]

Re: the gutless, bloated, and fried power supply hall of shame

I keep almost everything. Bit like ant, dissect it into small pieces every time You can use input caps for 250W PSUs, NTC when it blows somewhere, toroids at least for cores to make replacement (if you posess inductance meter). Resistors and stuff are also a need from time to time

[momaka]

Re: the gutless, bloated, and fried power supply hall of shame

^ Crappy caps / lack of output filtering aside, that Logysis is not that bad. My friend has the "480W" version at his repair shop - now that one is a big piece of shit. It cross-loads very easily and even hisses/squeals if the load is slightly unbalanced or too heavy. And the heat sinks are paper-thin - pretty much you see in the lowest of the lowest-end PowMax and SunPro.

[tom66]

Re: the gutless, bloated, and fried power supply hall of shame

I think that's the only good thing on it. I might take the switchers though, it has two 13007's and a SW2N60

Uploaded a pic of the secondary. Look at those gross caps...Output rectifiers from left to right 30A, 20A, 30A

What is that? Glue... snot... dried electrolyte... a combination of all three...?

[Pentium4]

Re: the gutless, bloated, and fried power supply hall of shame

^ Crappy caps / lack of output filtering aside, that Logysis is not that bad. My friend has the "480W" version at his repair shop - now that one is a big piece of shit. It cross-loads very easily and even hisses/squeals if the load is slightly unbalanced or too heavy. And the heat sinks are paper-thin - pretty much you see in the lowest of the lowest-end PowMax and SunPro.

I will still call this thing crap got pics of the 480W?

What is that? Glue... snot... dried electrolyte... a combination of all three...?

Probably all 3 you can't see really in the pics but that diode on the 5VSB circuit is very dark around it

[c_hegge]

Re: the gutless, bloated, and fried power supply hall of shame

that diode on the 5VSB circuit is very dark around it

I've seen that a few times in Keerda/Logisus PSUs, and it always dries out the two caps.

[Pentium4]

Re: the gutless, bloated, and fried power supply hall of shame

Yeah this one says Keerda Electronics on it. Is that their main OEM?