the gutless, bloated, and fried power supply hall of shame - Page 46

**c_hegge** · 01-03-2014, 06:26 PM

No, it looks like a Keerda (Logisys)

**ben7** · 01-03-2014, 06:33 PM

Is it me, or does the capacitor next to the 3.3V (orange) wires in picture 8 look like it has pushed it's bung out, without bulging?

**goodpsusearch** · 01-03-2014, 06:41 PM

Quote:

Originally Posted by ben7

Is it me, or does the capacitor next to the 3.3V (orange) wires in picture 8 look like it has pushed it's bung out, without bulging?

Excelent observation! I haven't noticed it

But now that I checked it you are absolutely right! It seems that the cap tried to fly to the moon

**ben7** · 01-03-2014, 06:42 PM

Quote:

Originally Posted by goodpsusearch

Excelent observation! I haven't noticed it

But now that I checked it you are absolutely right! It seems that the cap tried to fly to the moon

Haha!

Strange that it doesn't show a hint of bulging on the top... lol

**goodpsusearch** · 01-03-2014, 07:02 PM

I have seen that before. I can't blame those caps for bulging though.

**momaka** · 01-04-2014, 12:00 AM

Quote:

Originally Posted by goodpsusearch

I think this belongs here

Oh, yes it does for sure

**c_hegge** · 01-04-2014, 05:00 AM

I wouldn't be surprised if that thing couldn't deliver 1W with the ripple in spec from day 1.

**PeteS in CA** · 01-04-2014, 10:18 AM

What a gutless POS! 450W? For how many picoseconds?! 200W might have been pushing one's luck! And judging by the toasty wires on those O/P inductors, some one did try to get significant current from that thing (I think that inductor wire that is lifted from the PCB, if it wasn't desoldered for troubleshooting, may have gotten hot enough to desolder itself). The O/P inductors' cores probably were hot for a long time and their magnetic properties have probably changed significantly. I would suggest either stripping off the wire from the things for recycling or simply trashing those inductors along with the rest of that alleged power supply! Don't reuse those O/P inductors for anything you care about!

**goodpsusearch** · 01-04-2014, 10:21 AM

The fan stopped moving and the rest you know... It was powering a Pentium D with Nvidia 8800 or 8600...

**tmiha71** · 01-04-2014, 12:49 PM

Quote:

It was powering a Pentium D with Nvidia 8800 or 8600...

And The mobo was

**Pentium4** · 01-06-2014, 01:28 AM

Definitely Keerda. At least they used the ST rectifier on the 12V. But there isn't much good to say about that power supply... At least it has half an input filter?

**Th3_uN1Qu3** · 01-07-2014, 09:13 AM

They don't get much more gutless than this... Wonder what's up with the caps tho, as the warranty seal wasn't broken.

**mariushm** · 01-07-2014, 09:38 AM

On the upside, quite a lot of space between primary and secondary, lots of space between high voltage traces, room for additional filtering on primary side, big heatsinks, no two diodes treatment for 12v....

Shame the main transformer is so weak.

Why did it die, can't figure it out (that inductor is obvious but what made it burn) ?

**Behemot** · 01-07-2014, 01:35 PM

Most likely somebody pulling too much from it?

**Th3_uN1Qu3** · 01-07-2014, 02:25 PM

Quote:

Originally Posted by mariushm

Why did it die, can't figure it out (that inductor is obvious but what made it burn) ?

Partially seized fan. The caps didn't have time to cook fortunately. 5vsb was fine, so i replaced the output inductor and it fired right up. Went back in the computer, coz well, owner was cheap.

Powered a 1.6GHz Celeron 420, 1GB RAM, Geforce 7200 and a single hard drive, so not much load on it. But it was still a pathetic PSU. 12A fast recovery on 12v, linear regulator with MOSFET for 3.3v (hey, at least it supplies clean power), and the diode on the 5v had its part number scraped off. Most likely 30A judging by its size. Seen worse, but still pathetic... The diode on the 5vsb is a joke tho, that looks like a 2 amp job at most. At least they left its leads long so it has a chance to catch some cool air.

**kaboom** · 01-07-2014, 04:33 PM

Quote:

Originally Posted by Th3_uN1Qu3

Partially seized fan.

Those output inductors are rather stressed in these cheep POSes, more so than even in "StupidPowers." Linkworlds were like this- good sized transformer, but the too-small output inductor would "smell" below rated output. The 12V windings were too small upon examination. Too much load on +12 for too long would easily result in shorted turns. And cooked cores and blown switchers.

Quote:

Originally Posted by Th3_uN1Qu3

The caps didn't have time to cook fortunately. 5vsb was fine, so i replaced the output inductor and it fired right up. Went back in the computer, coz well, owner was cheap.

What else is new? At least you got to fix it and save the computer. As you know, some people are content to run their stuff on raw AC, as supplied by a Deer!

Quote:

Originally Posted by Th3_uN1Qu3

Powered a 1.6GHz Celeron 420, 1GB RAM, Geforce 7200 and a single hard drive, so not much load on it. But it was still a pathetic PSU. 12A fast recovery on 12v, linear regulator with MOSFET for 3.3v (hey, at least it supplies clean power), and the diode on the 5v had its part number scraped off. Most likely 30A judging by its size. Seen worse, but still pathetic... The diode on the 5vsb is a joke tho, that looks like a 2 amp job at most. At least they left its leads long so it has a chance to catch some cool air.

Aww... From the days when 5VSB was still an afterthought.

What were hiding with all that grinding?? I mean, they could've actually made it "challenging," by grinding that PWM IC.

"LOW ESR." Compared to what, an open ckt?

I suppose I could "rap" now... bwahaha

**Pentium4** · 01-07-2014, 05:00 PM

I imagine that "Zhila" cap (the 4.7µF 50V one) next to that resistor and 13007 isn't long for this world, assuming you didn't replace it.

That is indeed a horrible PSU, but the system it was in is probably <100W at all times, so I bet even ripple is in spec. Nice save though

Did you re-oil that fan or put a different one in there?

Edit: LOL @ the label right below the brand name "Demand More"

**c_hegge** · 01-07-2014, 05:01 PM

Quote:

Originally Posted by kaboom

Those output inductors are rather stressed in these cheep POSes, more so than even in "StupidPowers." Linkworlds were like this- good sized transformer, but the too-small output inductor would "smell" below rated output. The 12V windings were too small upon examination. Too much load on +12 for too long would easily result in shorted turns. And cooked cores and blown switchers.

I was gonna say, There's more to it than just the fan. Take the Delta GPS-300AP I posted here on page 7 for example. The fan on that one was completely stuck, the PCB was badly darkened and just about every single cap was vented. However, the toroid coils are still fine. It's in my parents PC now with the original main toroid coil.

**momaka** · 01-07-2014, 10:13 PM

Quote:

Originally Posted by Th3_uN1Qu3

They don't get much more gutless than this...

Awwww, what a cute little transformer!
Who's a cute transformer?... You are a little cute transformer... Oh yes you are! Oh yes you are

Quote:

Originally Posted by Th3_uN1Qu3

Wonder what's up with the caps tho, as the warranty seal wasn't broken.

Maybe it was refurbed by some Chinese company with whatever used caps they could find from junk/e-waste?

Other than that, I really have no clue.

Quote:

Originally Posted by kaboom

What were hiding with all that grinding??

Those should be 30A 45V rectifiers. But I imagine it's probably the same deal as with RAM modules from "lesser" known manufacturers... i.e. these particular rectifiers were likely bought on the black market or under the counter from some manufacturer who had a bunch of parts that didn't quite meet specification (i.e. refused parts).

Given the cap brands, this PSU is one hell of a "late night shift" job anyways. So for the time being, I will stick with that theory.

Quote:

Originally Posted by Pentium4

Edit: LOL @ the label right below the brand name "Demand More"

Really funny indeed. With that small transformer and that cooked torroid, they really should change that to "Do NOT demand more"

. Or "Demand More. We dare you"

**Behemot** · 01-07-2014, 10:24 PM

Maybe it has something to do with the labeled wattage?

01-03-2014, 06:26 PM	#901
c_hegge 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	Re: the gutless, bloated, and fried power supply hall of shame No, it looks like a Keerda (Logisys) __________________ 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

01-03-2014, 06:33 PM	#902
ben7 Capaholic Join Date: Jan 2011 City & State: Trenton, NJ My Country: USA Line Voltage: 240/120V 60Hz I'm a: Hardcore Geek Posts: 3,989	Re: the gutless, bloated, and fried power supply hall of shame Is it me, or does the capacitor next to the 3.3V (orange) wires in picture 8 look like it has pushed it's bung out, without bulging? __________________ Muh-soggy-knee

01-03-2014, 07:02 PM	#905
goodpsusearch Badcaps Veteran Join Date: Oct 2009 City & State: Thessaloniki, Greece My Country: Greece Line Voltage: 230VAC 50Hz I'm a: Knowledge Seeker Posts: 2,140	Re: the gutless, bloated, and fried power supply hall of shame I have seen that before. I can't blame those caps for bulging though.

01-04-2014, 05:00 AM	#907
c_hegge 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	Re: the gutless, bloated, and fried power supply hall of shame I wouldn't be surprised if that thing couldn't deliver 1W with the ripple in spec from day 1.

01-04-2014, 10:18 AM	#908
PeteS in CA 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: 3,504	Re: the gutless, bloated, and fried power supply hall of shame What a gutless POS! 450W? For how many picoseconds?! 200W might have been pushing one's luck! And judging by the toasty wires on those O/P inductors, some one did try to get significant current from that thing (I think that inductor wire that is lifted from the PCB, if it wasn't desoldered for troubleshooting, may have gotten hot enough to desolder itself). The O/P inductors' cores probably were hot for a long time and their magnetic properties have probably changed significantly. I would suggest either stripping off the wire from the things for recycling or simply trashing those inductors along with the rest of that alleged power supply! Don't reuse those O/P inductors for anything you care about! __________________ 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 13 5Ks, 1 8K, 12 10Ks, and 4 half marathons Last edited by PeteS in CA; 01-04-2014 at 10:22 AM..

01-04-2014, 10:21 AM	#909
goodpsusearch Badcaps Veteran Join Date: Oct 2009 City & State: Thessaloniki, Greece My Country: Greece Line Voltage: 230VAC 50Hz I'm a: Knowledge Seeker Posts: 2,140	Re: the gutless, bloated, and fried power supply hall of shame The fan stopped moving and the rest you know... It was powering a Pentium D with Nvidia 8800 or 8600...

01-06-2014, 01:28 AM	#911
Pentium4 CapXon Be Gone Join Date: Sep 2011 City & State: Idaho My Country: USA Line Voltage: 120VAC 60Hz I'm a: Hobbyist Tech Posts: 3,227	Re: the gutless, bloated, and fried power supply hall of shame Definitely Keerda. At least they used the ST rectifier on the 12V. But there isn't much good to say about that power supply... At least it has half an input filter?

01-07-2014, 09:38 AM	#913
mariushm Badcaps Veteran Join Date: May 2011 City & State: Romania Line Voltage: 230VAC 50Hz I'm a: Hobbyist Tech Posts: 3,720	Re: the gutless, bloated, and fried power supply hall of shame On the upside, quite a lot of space between primary and secondary, lots of space between high voltage traces, room for additional filtering on primary side, big heatsinks, no two diodes treatment for 12v.... Shame the main transformer is so weak. Why did it die, can't figure it out (that inductor is obvious but what made it burn) ?

01-07-2014, 01:35 PM	#914
Behemot Badcaps Veteran Join Date: Dec 2009 City & State: Prague, 50°4'52.22"N, 14°23'30.45"E My Country: CZ Line Voltage: 230 V/50 Hz I'm a: Knowledge Seeker Posts: 4,774	Re: the gutless, bloated, and fried power supply hall of shame Most likely somebody pulling too much from it? __________________ Less jewellery, more gold into electrotech industry! Half of the computer problems is caused by bad contacts Exclusive caps, meters and more! Hardware Insights - power supply reviews and more!

01-07-2014, 05:00 PM	#917
Pentium4 CapXon Be Gone Join Date: Sep 2011 City & State: Idaho My Country: USA Line Voltage: 120VAC 60Hz I'm a: Hobbyist Tech Posts: 3,227	Re: the gutless, bloated, and fried power supply hall of shame I imagine that "Zhila" cap (the 4.7µF 50V one) next to that resistor and 13007 isn't long for this world, assuming you didn't replace it. That is indeed a horrible PSU, but the system it was in is probably <100W at all times, so I bet even ripple is in spec. Nice save though Did you re-oil that fan or put a different one in there? Edit: LOL @ the label right below the brand name "Demand More" Last edited by Pentium4; 01-07-2014 at 05:03 PM..

01-07-2014, 10:24 PM	#920
Behemot Badcaps Veteran Join Date: Dec 2009 City & State: Prague, 50°4'52.22"N, 14°23'30.45"E My Country: CZ Line Voltage: 230 V/50 Hz I'm a: Knowledge Seeker Posts: 4,774	Re: the gutless, bloated, and fried power supply hall of shame Maybe it has something to do with the labeled wattage?