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

[Agent24]

Originally Posted by 370forlife

Solytech was a textiles manufacturer who bought out Deer not too long ago.

Surprised they didn't push for cotton-based PCBs to save cost... or maybe that's what they stuff the capacitors full of.

[ratdude747]

Originally Posted by goodpsusearch

TMP-ANS LC-A350ATX

The good thing about this power supply is...... that it is not going to power a computer anymore

Not worth of anything!












It reminds me of those power supplies:
http://www.badcaps.net/forum/showthr...ier#post114292
http://www.badcaps.net/forum/showthr...ier#post199701

From the build qulaity pictorial. One of the worst ATX PSU's I have seen in a while.

I love how they dated the warranty from the time of manufacure (not the time of purchase). FAIL.

[tom66]

It's quite fun to drop a ton of bricks on top of these. They usually work better afterwards.

[c_hegge]

Another cheap Sun Pro. At lest thios one does use DC-DC conversion from the 5V rail to generate the 3.3V. However, it still never managed more than about 73% efficiency on 230V at about 250W Load. I doubt it would even manage 70% in the US. At 350W, the efficiency was about 68% and it exploded after a few minutes.

[momaka]

How is this for gutless and fried?
http://www.badcaps.net/forum/attachm...1&d=1334112631
http://www.badcaps.net/forum/attachm...1&d=1334112631
Okay, I'll come clean - the PSU didn't come that stripped down (obviously ). This used to power my family's 400MHz Pentium II PC back in 1999-2001. The model number on the label will fool you that this in an L&C, but it's not (most likely J&C just labeled it as such). It actually used to look exactly like these (save for the different cap brands on mine)
http://www.badcaps.net/forum/showthr...ighlight=m-tec
http://www.badcaps.net/forum/showthread.php?t=1178 (see post #1)
Seems to go also by the names of M-tec, Meico, and Frontier.

As you can see, even without me removing the components, it's a very crappy power supply. Fortunately, it was pretty good desoldering practice for me a few years back. Also, the components I took out of it helped me save a 17" CRT monitor, a 250W HiPro PSU, and a few other things. Will soon be using one of the schottky diodes from it to make the 12V rail of a 250W Bestec 12Z a little beefier.

[lti]

http://www.eevblog.com/forum/product...-modification/

I don't see how that AC adapter was supposed to work without filter caps.

[ben7]

Originally Posted by lti

http://www.eevblog.com/forum/product...-modification/

I don't see how that AC adapter was supposed to work without filter caps.

Haha, must have a lot of 60hz hum on the output! (when its working-if it even does work at all :P)
Its so cheap that it doesn't even work for a millisecond xD
Note the fake certification labels!

Look at the comments for this product!
http://www.amazon.com/Apple-iPhone-T...pr_product_top
LOL at one of the comments, the person said it almost caught fire, and it made their phone go whacky, probably from loads of AC hum on the output.

-Ben

EDIT:
another fried PS picture!
http://www.magicbluesmoke.org/309/in...s-nv-psu-fails

[ratdude747]

Originally Posted by lti

http://www.eevblog.com/forum/product...-modification/

I don't see how that AC adapter was supposed to work without filter caps.

umm, it did. there are 2 tiny lytics.

also, it might be a half bridge cemter tapped rectifier, which would produce 100hz of noise (based on the plug, looks to be a 250V 50HZ connector). The picture is too fuzzy to tell.

There still would be lots of noise, as those caps are probably too tiny for the job.

[lti]

It looks like the cap on the lower left corner next to the USB connector is a filter cap, but the other cap is part of the oscillator. That looks like the single transistor oscillator that is used in most cheap adapters, but the power just goes through a single diode before going into the oscillator without a filter cap or current limiting resistor.

[pdavid]

Originally Posted by momaka

How is this for gutless and fried?
http://www.badcaps.net/forum/attachm...1&d=1334112631
http://www.badcaps.net/forum/attachm...1&d=1334112631
Okay, I'll come clean - the PSU didn't come that stripped down (obviously ). This used to power my family's 400MHz Pentium II PC back in 1999-2001. The model number on the label will fool you that this in an L&C, but it's not (most likely J&C just labeled it as such). It actually used to look exactly like these (save for the different cap brands on mine)
http://www.badcaps.net/forum/showthr...ighlight=m-tec
http://www.badcaps.net/forum/showthread.php?t=1178 (see post #1)
Seems to go also by the names of M-tec, Meico, and Frontier.

As you can see, even without me removing the components, it's a very crappy power supply. Fortunately, it was pretty good desoldering practice for me a few years back. Also, the components I took out of it helped me save a 17" CRT monitor, a 250W HiPro PSU, and a few other things. Will soon be using one of the schottky diodes from it to make the 12V rail of a 250W Bestec 12Z a little beefier.

Oh my... How did I miss this. The famous "Mrs. Varga and Co." psu. I just gutted one today to get the fuse and mag-amp choke.

[Th3_uN1Qu3]

That is actually a very interesting PCB. It is designed for both AT and ATX - i have both versions. All i can say it's a big mess of a PCB. The input diodes are 2A, no room for a bridge rectifier. You can't fit any input caps larger than 330u due to can size. And there's no input filtering whatsoever, not even the room for it. Crazy.

[Pentium4]

BRACE YOURSELVES, you may cry at how bad this PSU is..

[IMG]http://img94.**************/img94/1772/dscn0226ug.jpg[/IMG]

[IMG]http://img214.**************/img214/1639/dscn0221m.jpg[/IMG]

[IMG]http://img193.**************/img193/4619/dscn0222ah.jpg[/IMG]

Too lazy to label the popped caps but I'm sure you can spot them. All it was powering was an Athlon 64 x2 and a 6800GS. Efficiency = 64% Canicon caps (kill me now)

[b700029]

How many watts was on the label? Looks like 150-200W max.

[Agent24]

The heatsinks don't seem too bad though, and there are actually inductors in the output not just wire links - also it has a bridge rectifier. It's lame but it could be worse.

[momaka]

Originally Posted by Th3_uN1Qu3

That is actually a very interesting PCB.

Makes me wonder what software they used for the top-side printing - it looks horrible. MS Paint maybe?

Originally Posted by pdavid

I just gutted one today to get the fuse and mag-amp choke.

The MOSFET and 431 shunt regulator are also pretty useful. I was prototyping a circuit yesterday and needed some odd resistor values. Found most of them in the bag where I have the parts from that PSU.
The heat sinks aren't too bad either, especially the secondary one. Might use it in the headphone amp I'm going to build (0.o).
Funny how I find this PSU much more useful for the parts than if it was actually working and in one piece.

[kc8adu]

the 3rd pic asks a question after the fact!.

[SuperDuty]

Delta Electronics power supply and control board from a Belinea 1925 S1W screen I found in the recycling center electronics section this afternoon :




Main cap is Nichicon, ALL the bloated caps are CapXon. The screen is not even five years old according to the PCB build dates :/ Really bad caps.
Replaced them all with with what I had on hand (including Fujyuu and other sh**) but mostly for test purposes, the screen works fine but makes an annoying buzzing sound. It's kinda weird since I replaced the two CapXon GL105°C on the power supply board with the exact same CapXon GL from another PSU, with the same ratings, but a bit older. I guess I should buy some new caps for this one.

[SuperDuty]

Comparison of a two PSUs :
On the left, a 145W AT (not sure, it has AT connectors but no switch like most AT PSUs) Astec power supply, from 1997, high quality components and very clean PCB.
On the right, the infamous Heden PSX-A330U, supposedly 480W...problem ? U mad ?

I got it in a case I bought in 2004 or 2005. I used this power supply with an Althon XP2200+, a K7S8X motherboard and a Radeon 9600 Pro for about five years with no problem. No filter, no PFC, a lot of missing components. I've stripped it and threw the rest to the trash.



This is a famous french article explaining in details about how bad power supplies from this brand are : http://www.x86-secret.com/dossier-36...on_Noname.html

Two weeks ago I decided to have a look at my computer power supplies. I had about 20 of them...I have about 10 left, I even found a DEER power supply ! It will be recycled soon.

[tom66]

Originally Posted by SuperDuty

Delta Electronics power supply and control board from a Belinea 1925 S1W screen I found in the recycling center electronics section this afternoon :




Main cap is Nichicon, ALL the bloated caps are CapXon. The screen is not even five years old according to the PCB build dates :/ Really bad caps.
Replaced them all with with what I had on hand (including Fujyuu and other sh**) but mostly for test purposes, the screen works fine but makes an annoying buzzing sound. It's kinda weird since I replaced the two CapXon GL105°C on the power supply board with the exact same CapXon GL from another PSU, with the same ratings, but a bit older. I guess I should buy some new caps for this one.

Heh, the lone Rubycon and Nichicon are fine -> but the rest are CrapXon so they bulge like anything else! I have replaced so many bulged CapXon they are down their with Fuhhhjyuuuuuu.

[Pentium4]

Originally Posted by b700029

How many watts was on the label? Looks like 150-200W max.

It was labeled as a 550W...