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11-22-2010, 12:14 AM
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#101 |
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Unknown
Join Date: Sep 2009
City & State: North Coast, NSW
My Country: Australia
Line Voltage: 240V 50Hz
I'm a: Professional Tech
Posts: 3,358
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Re: the gutless, bloated, and fried power supply hall of shame
This was shawly not a 500W like it claimed to be. Notice the heat damage on the output. The wires were melted near the PCB. The funny thing is that when I peeled off the label with the SHAW brand, there ws another label claiming it was a Ritmo. Any ideas who made it? Maybe TaiwanBreakDownComponents Company? The heatsinks were OK-ish, but the 5vsb transistor was a total joke - about the same size as the one on kc8's echo star 480.
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I love putting bad caps and flat batteries in fire and watching them explode!! Main PC: Core i5 660 3.33GHz, Gigabyte GA-P55-UD3R, 4GB Kingston DDR3 1333, 750GB WD HDD, Sony Optiarc DVD RW, nVidia GTX295 1760MB, Antec 1200 Case, Delta DPS-750CB 750W PSU, Hauppauge TV Tuner, Windows XP Pro. Main Laptop: Lenovo Thinkpad T60: Core 2 T2500 2GHz, 2GB DDR2, 80GB HDD, DVD RW, Intel Graphics, Windows XP Pro. 2nd Laptop: Toshiba Satellite A200: Core Duo 1.73GHz, 2GB DDR2, 60GB HDD, DVD RW, nVidia GF Go 7300 Graphics, OpenSUSE 12.2, Fan Mod |
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11-22-2010, 02:42 AM
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#102 |
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Fuhjyyu Killer
Join Date: Oct 2007
City & State: Behind a soldering iron
My Country: New Zealand
Line Voltage: 230V AC 50Hz
Posts: 1,614
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Re: the gutless, bloated, and fried power supply hall of shame
I've got a some 300 Watt Hyenas (Deer) that look better than that thing.
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11-22-2010, 03:14 AM
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#103 |
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Unknown
Join Date: Sep 2009
City & State: North Coast, NSW
My Country: Australia
Line Voltage: 240V 50Hz
I'm a: Professional Tech
Posts: 3,358
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Re: the gutless, bloated, and fried power supply hall of shame
I got a good picture of the wires. I stuck the 12v ones out (which were melted together) so you could see how discoloured they were.
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11-22-2010, 05:18 AM
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#104 |
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Badcaps Veteran
Join Date: Oct 2009
City & State: Thessalonik
My Country: Greece
I'm a: Hobbyist
Posts: 1,054
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Re: the gutless, bloated, and fried power supply hall of shame
Linkworld
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11-22-2010, 04:48 PM
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#105 | |
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Badcaps Veteran
Join Date: May 2008
City & State: VA
My Country: U.S.A.
Line Voltage: 120 VAC, 60 Hz
I'm a: Student Tech
Posts: 3,158
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Re: the gutless, bloated, and fried power supply hall of shame
That looks absolutely horrible. Did the fan seize? If not, I wonder what caused the thermal runaway. It doesn't help either that they put big low-ohm loading resistors on the secondary.
And, yes, you can tell the 5vsb transistor was undersized - note the burn marks on its spot on the PCB. Quote:
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11-22-2010, 07:10 PM
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#106 |
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Unknown
Join Date: Sep 2009
City & State: North Coast, NSW
My Country: Australia
Line Voltage: 240V 50Hz
I'm a: Professional Tech
Posts: 3,358
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Re: the gutless, bloated, and fried power supply hall of shame
The fan did indeed quit on this PSU, which is probably why it got so hot.
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11-22-2010, 07:34 PM
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#107 |
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Fuhjyyu Killer
Join Date: Oct 2007
City & State: Behind a soldering iron
My Country: New Zealand
Line Voltage: 230V AC 50Hz
Posts: 1,614
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Re: the gutless, bloated, and fried power supply hall of shame
You wonder why people don't notice their fans making hideous grinding noises.... A friend of mine had a 133Mhz Pentium and the PSU fan was in terrible condition.
I did not know about capacitor problems at that time but luckily we just replaced the whole PSU. |
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11-22-2010, 09:07 PM
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#108 |
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Unknown
Join Date: Sep 2009
City & State: North Coast, NSW
My Country: Australia
Line Voltage: 240V 50Hz
I'm a: Professional Tech
Posts: 3,358
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Re: the gutless, bloated, and fried power supply hall of shame
They probably notice, but because the PC still appears to be working, they don't care.
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11-22-2010, 09:33 PM
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#109 | |
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Badcaps Veteran
Join Date: Oct 2009
City & State: Thessalonik
My Country: Greece
I'm a: Hobbyist
Posts: 1,054
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Re: the gutless, bloated, and fried power supply hall of shame
Quote:
Btw, here in Greece, I see many Linkworlds (LPQ, LPH or LPK) that use Sleeve Bearing Globe Fans and as they work at full speed all the time they fail quite often. Last edited by goodpsusearch; 11-22-2010 at 09:36 PM.. |
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11-30-2010, 02:31 AM
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#110 |
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Unknown
Join Date: Sep 2009
City & State: North Coast, NSW
My Country: Australia
Line Voltage: 240V 50Hz
I'm a: Professional Tech
Posts: 3,358
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Re: the gutless, bloated, and fried power supply hall of shame
Sky 550 watt. It looks like TaiwanBreakDownComponents Company got the transformer right, for once as it's a real 35 size, but everything else is wrong. The transient input filtering is missing (other than only 2 Y-caps), the primary switchers claim to be 13009s, but they look too small. On the secondary, we have a 16A fast recovery on the 12v and 20A schottkys for the other two rails. All of the caps are BH. The primaries are 470uF. All of the rails have a pair of 1000uF caps on them, except for the -12, which has a single 470uF. The fan looks like an off-brand (HongGu). Probably could be re-built like my rexpower, but I'm not in any mood that at the moment, so it will probably just die a spectacular death on my load tester or get the sledge hammer treatment.
Last edited by c_hegge; 11-30-2010 at 02:34 AM.. |
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11-30-2010, 05:07 AM
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#111 |
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Super Moderator
Join Date: Nov 2008
City & State: New Albany, IN
My Country: USA
Line Voltage: 120VAC 60Hz
I'm a: Student Tech
Posts: 10,739
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Re: the gutless, bloated, and fried power supply hall of shame
correct me if i am wrong, but it appears that the grounding pin on the AC connector goes nowhere
 i would desolder the transformer out of it and find a junk small one to put in before you fry... the tranny might be good for a unit with a small tranny but good everything else 500w mein ezel, das ist sehr schlecht! (english: 500w my ass, that (power suppy) ist very bad!) complete donkey poo...
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 (Insert signature here) Last edited by ratdude747; 11-30-2010 at 05:09 AM.. |
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11-30-2010, 01:04 PM
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#112 |
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Unknown
Join Date: Sep 2009
City & State: North Coast, NSW
My Country: Australia
Line Voltage: 240V 50Hz
I'm a: Professional Tech
Posts: 3,358
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Re: the gutless, bloated, and fried power supply hall of shame
The ground wire does actually connect to the case. It's just not easy to see in the picture. But it is still a gutless wonder.
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11-30-2010, 10:06 PM
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#113 |
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Unknown
Join Date: Sep 2009
City & State: North Coast, NSW
My Country: Australia
Line Voltage: 240V 50Hz
I'm a: Professional Tech
Posts: 3,358
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Re: the gutless, bloated, and fried power supply hall of shame
It blew up at 277 watts on the load tester. Here's the carnaige
Last edited by c_hegge; 11-30-2010 at 10:08 PM.. Reason: Add some pics of the carnaige |
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11-30-2010, 10:37 PM
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#114 |
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Badcaps Veteran
Join Date: May 2008
City & State: VA
My Country: U.S.A.
Line Voltage: 120 VAC, 60 Hz
I'm a: Student Tech
Posts: 3,158
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Re: the gutless, bloated, and fried power supply hall of shame
Shame. It didn't look that bad actually. Definitely not 500W, but I would have expected it to do 250W continuous, maybe 300W for short durations.
At least you got spare parts now  . |
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11-30-2010, 11:54 PM
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#115 | |
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Unknown
Join Date: Sep 2009
City & State: North Coast, NSW
My Country: Australia
Line Voltage: 240V 50Hz
I'm a: Professional Tech
Posts: 3,358
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Re: the gutless, bloated, and fried power supply hall of shame
Quote:
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12-01-2010, 04:41 AM
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#116 |
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Badcaps Veteran
Join Date: Oct 2009
City & State: Thessalonik
My Country: Greece
I'm a: Hobbyist
Posts: 1,054
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Re: the gutless, bloated, and fried power supply hall of shame
What blew in it?
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12-01-2010, 04:54 AM
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#117 |
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Unknown
Join Date: Sep 2009
City & State: North Coast, NSW
My Country: Australia
Line Voltage: 240V 50Hz
I'm a: Professional Tech
Posts: 3,358
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Re: the gutless, bloated, and fried power supply hall of shame
Not sure. The primary swithers looked OK, although I didn't test them and they had gotten so hot that the plastic rings around the screws had melted. A few of the nearby resistors looked burned out, though. The burn mark is actually almost invisible on the component side of the PCB. Unforunately, I can't get any more pics as after it blew up, I scavenged the transformer and wires and gave it the sledge hammer treatment.
Last edited by c_hegge; 12-01-2010 at 04:56 AM.. |
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12-01-2010, 02:01 PM
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#118 | |
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Large Marge
Join Date: Aug 2008
City & State: Kalamazoo, MI
My Country: United States
Line Voltage: 0-120VAC 60Hz
I'm a: Hobbyist Tech
Posts: 2,810
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Re: the gutless, bloated, and fried power supply hall of shame
Looks like the primary switchers blew out.
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01-26-2011, 03:06 AM
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#119 |
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Unknown
Join Date: Sep 2009
City & State: North Coast, NSW
My Country: Australia
Line Voltage: 240V 50Hz
I'm a: Professional Tech
Posts: 3,358
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Re: the gutless, bloated, and fried power supply hall of shame
Here's another shocker. Tiny transformer, miniscule heatsinks and half a PCB. The best part is, it's an FSP (more specifically, a Gigabyte "300W"). It did actually do 320W on the load tester, but the DMM wouldn't settle when I was reading the voltages.
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01-26-2011, 03:32 AM
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#120 |
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Badcaps Veteran
Join Date: Oct 2009
City & State: Thessalonik
My Country: Greece
I'm a: Hobbyist
Posts: 1,054
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Re: the gutless, bloated, and fried power supply hall of shame
lol
It must be loud. |
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