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Old 06-18-2017, 09:58 PM   #1321
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Default Re: the gutless, bloated, and fried power supply hall of shame

Should not matter if you RMA directly to Corsair. Check their site and try starting the procedure. I bet they'll want ya to send it to some other country anyway, they don't have service center everywhere.

I doubt wou'll be able to repair such carnage anyway, the HV usually burns too many components when it blasts like this.
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Old 06-19-2017, 05:44 AM   #1322
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Default Re: the gutless, bloated, and fried power supply hall of shame

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Originally Posted by Behemot View Post
Yeah this platform is not that great, but if it's only two months old, it is under warranty, no?
Not anymore because he opened it up...

Shouldn't Corsair have some kind of Worldwide Warranty??
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Old 06-19-2017, 07:57 PM   #1323
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Default Re: the gutless, bloated, and fried power supply hall of shame

That "Mercury" PSU looks like a Deer! (The cooked PCB!) Or at least acts like one...
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Old 06-19-2017, 08:11 PM   #1324
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Default Re: the gutless, bloated, and fried power supply hall of shame

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Originally Posted by RJARRRPCGP View Post
That "Mercury" PSU looks like a Deer! (The cooked PCB!) Or at least acts like one...
Fries like a Deer.
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Old 06-20-2017, 01:27 AM   #1325
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Default Re: the gutless, bloated, and fried power supply hall of shame

Quote:
Originally Posted by RJARRRPCGP View Post
That "Mercury" PSU looks like a Deer! (The cooked PCB!) Or at least acts like one...
It actually is, and they were stupid enough to mark a ERL-35 transformer (it was a real ERL-35 transformer - I know that because ERL-28 and 33 usually have a square top while 35 has a rounded top) with EI-33ASG. That's Deer for you
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Old 07-17-2017, 03:51 PM   #1326
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Default Re: the gutless, bloated, and fried power supply hall of shame

So, this came with new $30 BaoFeng radio. The LED had a certain rolling flicker to it, and the PSU weighed about the same as an AA battery. This one didn't' have time to bloat and toast, but that's coming.... Im going to see how long it lasts full load in a hot gas stream!

So we start with the case label.

Not inspiring....

And it gets worse. Here's the topside of the board.

Insulation? We don't need none of that....... Single diode flyback topology, no input filtering, fusible resistor, no Pi filtering.... G-Arbage!

Topside-BottomWise now. They at least tried with the compliance...

Don't let the wires bewilder you, they are all of 3 strands of copper-clad. holes in the solder mask, dry joints galore, that main filter has a lifted pad. ignore the missing LED, i did that. The bloody thing lit up my room!

And the money shot!

Mains filter: A measly 4.7uF, 400v.
Secondary: 470uF, 16v
Bootstrap: A sad 4.7uF, 50v
All ChengX (Bang eXplosion)
The "safety" cap is nothing of the kind! "222 1Kv", no compliance markings.


Goontrons rating: F for Fire Hazard.


Heres the PSU im replacing it with: http://www.badcaps.net/forum/showpos...postcount=2741
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File Type: jpg IMG_20170717_133147147.jpg (1.41 MB, 170 views)
File Type: jpg IMG_20170717_133158395.jpg (1.47 MB, 166 views)
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File Type: jpg IMG_20170717_133235842.jpg (1.21 MB, 166 views)
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Last edited by goontron; 07-17-2017 at 04:20 PM..
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Old 07-17-2017, 06:44 PM   #1327
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Default Re: the gutless, bloated, and fried power supply hall of shame

Nothing but quality...

/sarcasm

You can always, wait...
EOL it!

Wanna bet the AC line wires melt before that fusistor opens?
Those disc caps misused as safety caps are the things of "electrocuted by cellfone."

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guilty,guilty,guilty,guilty!
guilty of being cheap-made!

Last edited by kaboom; 07-17-2017 at 06:47 PM..
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Old 07-17-2017, 07:16 PM   #1328
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Default Re: the gutless, bloated, and fried power supply hall of shame

Ill post the carnage after the hot gas stream experiment. 7000 BTUs ought to do it...
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Old 07-17-2017, 07:36 PM   #1329
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Default Re: the gutless, bloated, and fried power supply hall of shame

Quote:
Originally Posted by goontron View Post
Ill post the carnage after the hot gas stream experiment. 7000 BTUs ought to do it...
shango066 style...
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Old 07-17-2017, 08:44 PM   #1330
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Default Re: the gutless, bloated, and fried power supply hall of shame

Quote:
Originally Posted by goontron View Post
And the money shot!

Mains filter: A measly 4.7uF, 400v.
Secondary: 470uF, 16v
Bootstrap: A sad 4.7uF, 50v
All ChengX (Bang eXplosion)
The "safety" cap is nothing of the kind! "222 1Kv", no compliance markings.


Goontrons rating: F for Fire Hazard.


Heres the PSU im replacing it with: http://www.badcaps.net/forum/showpos...postcount=2741
Those ChengX are fake, there is no CD3000 series from ChengX, I actually found out recently that in the earlier samsung chargers, those white 5V 1A ones, they used ChengX capacitors in them, they look nothing like half of the shit we see.
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Last edited by Per Hansson; 07-18-2017 at 05:36 AM.. Reason: Shortened quote
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Old 07-17-2017, 08:47 PM   #1331
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Default Re: the gutless, bloated, and fried power supply hall of shame

Quote:
Originally Posted by kevin! View Post
I present the WORST PSU AT I've seen.
In the photo that I measured the voltage, I almost electrocuted, because of the camera, I did not fix and I did not put the hand correctly with the tip of the multimeter. XD.
Kids, do not do this at home xD.
Going back to the subject, I find it VERY regrettable to leave a huge hole where the input of 220V DC ...
In addition, the primary capacitors bloweds...
Fuck yeah Peakmeter, those are awesome meters, I have one!
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Old 07-18-2017, 12:02 AM   #1332
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Default Re: the gutless, bloated, and fried power supply hall of shame

Quote:
Originally Posted by jazzie366 View Post
Those ChengX are fake, there is no CD3000 series from ChengX, I actually found out recently that in the earlier samsung chargers, those white 5V 1A ones, they used ChengX capacitors in them, they look nothing like half of the shit we see.
Your shitting me? Undersized and knockoffs of a Crapacitor brand? Vhat the fuck?
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Old 07-18-2017, 09:16 PM   #1333
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Default Re: the gutless, bloated, and fried power supply hall of shame

Quote:
Originally Posted by goontron View Post
Single diode flyback topology...
I don't think that is an actual topology.

It is just a standard flyback topology. That little 8-pin SOIC SMD chip on the bottom is probably an offline controller with built-in FET of some sort. Nice to see that, but there is no optocoupler with it, so the IC is likely running in open-loop mode - which means the regulation will be shit. Then again, seeing how the rest is built, this should come as no surprise.

I really don't understand why people waste resources to produce garbage like this. It just doesn't do anyone any good.

Quote:
Originally Posted by goontron View Post
ignore the missing LED, i did that. The bloody thing lit up my room!

I have a different cheap power adapter like that as well. Never thought that frosted lens LEDs could be so bright. Mine has a red LED, and it is the brightest red LED I have ever seen. It literally burns your eyes upon sight - worse than staring into a toy laser.

Quote:
Originally Posted by goontron View Post
The "safety" cap is nothing of the kind! "222 1Kv", no compliance markings.
Ugh! And you can see it goes between primary negative bus and secondary "ground". They could have saved more money on the adapter by not installing that cap, and it would actually have been safer. Imagine that!

Quote:
Originally Posted by goontron View Post
Goontrons rating: F for Fire Hazard.
Or "D" for Death Hazard?

Quote:
Originally Posted by jazzie366 View Post
Those ChengX are fake...
Does it matter?
Fake or real... Cheng/Chong/Chang caps are shit and that is all that matters.

Last edited by momaka; 07-18-2017 at 09:21 PM..
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Old 07-19-2017, 03:33 PM   #1334
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Default Re: the gutless, bloated, and fried power supply hall of shame

Quote:
Originally Posted by momaka View Post
... That little 8-pin SOIC SMD chip on the bottom is probably an offline controller with built-in FET of some sort. Nice to see that, but there is no optocoupler with it, so the IC is likely running in open-loop mode - which means the regulation will be shit. Then again, seeing how the rest is built, this should come as no surprise.
...
I noticed that, too. It's an unregulated power supply, maybe semi-unregulated. If it's a Topswitch type regulator it's probably regulating its own Vcc, and the output winding is of a chosen ration to that primary Vcc winding. So its line regulation might be decent, but the load regulation will be as you described (probably in the +/- 7%-10% range).
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Old 07-21-2017, 08:59 AM   #1335
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Red face Re: the gutless, bloated, and fried power supply hall of shame

Failed mains cap on Benq monitor power board causes fuse to blow. No other components shorted though. I was expecting at least the FET to have gone bang, but no :|
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Old 07-21-2017, 09:17 AM   #1336
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Default Re: the gutless, bloated, and fried power supply hall of shame

Looks like there may have been a electrical surge that caused the capacitor to fail.
And i think the fuse failed for the same reason as i don't think fuses are designed to blow up like that.

Or it could be poorly badly made parts.

Last edited by ruky con; 07-21-2017 at 09:23 AM..
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Old 07-21-2017, 11:25 AM   #1337
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Default Re: the gutless, bloated, and fried power supply hall of shame

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Originally Posted by ruky con View Post
Looks like there may have been a electrical surge that caused the capacitor to fail.
And i think the fuse failed for the same reason as i don't think fuses are designed to blow up like that.

Or it could be poorly badly made parts.
Yes there definitely was, as the guy who brought it in himself said it popped after a power outage...
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Old 07-22-2017, 12:28 PM   #1338
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Default Re: the gutless, bloated, and fried power supply hall of shame

That must've been a really high energy, fairly long surge! I don't see an MOV or other surge protection device, so it would be vulnerable to surges, but that looks like a ceramic body fuse. Usually ceramic fuses are chosen for resistance to shattering. That looks like substantial arcing continued after the fuse wire fused (i.e. the voltage was high enough to sustain an arc from end cap to end cap). That is really an impressive sight!

BTW, I love the genuine Y-caps and the slots cut in the PCB to increase the creepage distance.
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Old 07-22-2017, 12:53 PM   #1339
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Default Re: the gutless, bloated, and fried power supply hall of shame

Quote:
Originally Posted by PeteS in CA View Post
That must've been a really high energy, fairly long surge! I don't see an MOV or other surge protection device, so it would be vulnerable to surges, but that looks like a ceramic body fuse. Usually ceramic fuses are chosen for resistance to shattering. That looks like substantial arcing continued after the fuse wire fused (i.e. the voltage was high enough to sustain an arc from end cap to end cap). That is really an impressive sight!

BTW, I love the genuine Y-caps and the slots cut in the PCB to increase the creepage distance.
Too bad I didn't take a shot of the whole board....now that I think about it, yes, you're right: I don't recall seeing any MOVs either. I fixed it today: replaced the mains cap and worked straight away, so I'm still astounded the FET didn't short out...fuse must've gone off in time.
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Old 07-22-2017, 04:50 PM   #1340
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Default Re: the gutless, bloated, and fried power supply hall of shame

Just speculating ... if the MOST AT was an 800V part, the cap might have absorbe the hit, shorted, and blown the fuse. IOW the 420 cap might have protected the MOSFET. Not good design, relying on an almost accidental sequence of events.
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