Re: the gutless, bloated, and fried power supply hall of shame
No, it looks like a Keerda (Logisys)
No, it looks like a Keerda (Logisys)
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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 -
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-kneeComment
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Re: the gutless, bloated, and fried power supply hall of shame
Haha!
Strange that it doesn't show a hint of bulging on the top... lolMuh-soggy-kneeComment
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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.Comment
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Re: the gutless, bloated, and fried power supply hall of shame
Oh, yes it does for sureI think this belongs here
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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.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 ProComment
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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!Last edited by PeteS in CA; 01-04-2014, 10:22 AM.PeteS in CA
Power Supplies should be boring: No loud noises, no bright flashes, and no bad smells.
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To kill personal responsibility, initiative or success, punish it by taxing it. To encourage irresponsibility, improvidence, dependence and failure, reward it by subsidizing it.
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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...Comment
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Re: the gutless, bloated, and fried power supply hall of shame
And The mobo wasIt was powering a Pentium D with Nvidia 8800 or 8600...
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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?
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Re: the gutless, bloated, and fried power supply hall of shame
They don't get much more gutless than this... Wonder what's up with the caps tho, as the warranty seal wasn't broken.Attached FilesA working TV? How boring!Originally posted by PeteS in CAComment
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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) ?Comment
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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!Comment
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Re: the gutless, bloated, and fried power supply hall of shame
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.Last edited by Th3_uN1Qu3; 01-07-2014, 02:28 PM.A working TV? How boring!Originally posted by PeteS in CAComment
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Re: the gutless, bloated, and fried power supply hall of shame
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.
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!
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... bwahahaLast edited by kaboom; 01-07-2014, 04:37 PM."pokemon go... to hell!"
EOL it...
Originally posted by shango066Originally posted by smashstuff30guilty,guilty,guilty,guilty!
guilty of being cheap-made!Comment
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Re: the gutless, bloated, and fried power supply hall of shame
I imagine that "Zhila" cap (the 4.7uF 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, 05:03 PM.Comment
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Re: the gutless, bloated, and fried power supply hall of shame
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.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.Last edited by c_hegge; 01-07-2014, 05:05 PM.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 ProComment
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Re: the gutless, bloated, and fried power supply hall of shame
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
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.
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).Originally posted by kaboom
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.
Originally posted by Pentium4 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"
Last edited by momaka; 01-07-2014, 10:18 PM.Comment
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Re: the gutless, bloated, and fried power supply hall of shame
Maybe it has something to do with the labeled wattage?
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!Comment
But now that I checked it you are absolutely right! It seems that the cap tried to fly to the moon 
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Back in 2020 i bought a (2nd hand) compact ATX psu to replace my current one. My PC case only fits very short ATX power supplies so i didn't really have the choice of buying a decent 80Plus unit. The current unit is a modded YoungYear unit that i made a thread about a while ago:
A "nice" YoungYear unit? - Badcaps
The "new" unit is a KDM-M6480 480W psu, the 480W number is a typical KDM bullshit claim of course, but the 24A rating on the 12V rail seemed reasonable and the "Active PFC" claim gave me a bit of hope that this was going to be decent-ish.... -
Introducing... the POS-124Z which really is a POS:
Yep it's a POS allright.
I tried powering it up. It's a KILLER - not fried, but sure will fry things! I got 21V out of it unloaded according to my DMM!
I tried 21W load (car lamp) - got 16V, which is really pushing that lamp.
Then I tried a 50W load (car headlight) - got 13.2V. Not too bad but this is with the heavy load...except the circuit breaker kept tripping.
So I had to take a peek:
EIEW. Looks like a Darlington emitter follower + Zener device. Heatsinking?... -
Hi,
I'm learning electronics(already have some basics) by fixing a FH52M LA-J891P rev1B. It come from an acer nitro 5. The charger was defaulting upon pluging. The 19V rail resistance is 0ohm (I believe that caps screw my measurement). When i inject 5A, I get a rail tension of 1.3V, and 0.8V vcccore.
Except the cpu, I cant feel anything getting warmer.
I believe that it is normal, because the cpu is "eating" half the power I'm imputing.
I dont know if the cpu is fried, because I did not remove the big capacitor on vcccore.
I believe that if the cpu was fried,... -
While our PSU hall of shame thread is fun I thought It'd be fun to have a ripple hall of shame thread too
I'll go first out, it's an industrial PSU that offers +15v -15v -5v +5v rails.
However it has been mounted on a frame with DC/DC converters for producing +12v and -12v as well.
The caps for this have gone a bit high ESR
The measured ripple is around 1700mV, or 1.7v!
After recapping the ripple is gone, also note that the scale on the scope is 50mV/div instead of 500mV per div in this shot
-And that's how you know you have a qualifying... -
Hello!
Looks like I fried something when my EDP cable got squeezed on the hinge. I replaced the cable but still no display. Laptop works fine with external monitor connected through HDMI and Display Port-USB C port. I took it apart and I see a burnt component. Can anyone help me identify what this component is? I tried to use schematics for another G15 but it does not match on the amount of pins and size. I attached pictures. The component has a label on it - (21A29)
Laptop is a Asus G15 Advantage Edition 2021 Laptop Ryzen 9 5980HX - 6800M...
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