Power supply build quality pictorial.closed.use part 2

[momaka]

Re: Power supply build quality pictorial

Xtreme LP-6100 400 watts(?) - looks a lot like PowMax (works)

That is indeed a PowMax, but it's not an LP-6100 design like the cover says. It's a 7700A, similar to the power supply you posted above that.
The Raptor LC-B400ATX is made by L&C/Deer. Yes, it's a crappy company as well.

[Logistics]

Re: Power supply build quality pictorial

Well, I finally went and bought a couple of these for my SuperMicro 1U's, but the design is different; they vent off the right-rear side of the PSU instead of straight out the back like ones already in my enclosures. So these won't work for me, at least not in these enclosures, but here are some pics of them anyway. They look pretty nice. Judges say?

Rackable Systems
Model: 3F27-45-1

[Wizard]

Re: Power supply build quality pictorial

FIRST rate! Problem is where can you get wires with plugs?

And you'll hate those fans. Loud whine.

Cheers, Wizard

[370forlife]

Re: Power supply build quality pictorial

Those good ol' delta whiners. Looks like it blows into the psu? I think it would be better to have it blowing air out of it.

[Logistics]

Re: Power supply build quality pictorial

FIRST rate! Problem is where can you get wires with plugs?

And you'll hate those fans. Loud whine.

Cheers, Wizard

Like I said, I can't use them in the enclosures I have, but they're just modular plugs, aren't they? The main 24-pin... not sure what the 8 pin is for, but the other two 4-pin are just regular accessory power for drives and such, correct?

[Logistics]

Re: Power supply build quality pictorial

From what I can tell reading about other power supplies, the 8-pin is a PCI-E x2, something to do with SLI that I don't care about. And as far as the side-vent, screw it, I grew up working in a body & paint shop; I'll just cut the sides of my 1U cases... they're never going to occupy an actual rack, again anyway!

Any suggestions for replacing those whiney fans? I'm not going to stress these supplies out. They are only going in dual-tualatin blade servers with a single hard drive and cd-rom.

[370forlife]

Re: Power supply build quality pictorial

I would just leave it. Any other fan that size is probalby not going to push enough air to adequately cool it, and if it did it would be a whiner too.

[everell]

Re: Power supply build quality pictorial

CoolMax AP-550X (V-500)
Fan froze up, became HotMax
Notice burn discolored areas on pc board.
3.3 volt and 12 volt wires on output side are burnt where they come out of pc board.
Six caps bulging.

[Krankshaft]

Re: Power supply build quality pictorial

To think a few cents for a thermisistor mounted to the rectifier heatsink and a simple shutdown circuit could have prevented this.

[kc8adu]

Re: Power supply build quality pictorial

looks like an atng i had here.
most coolmax are andyson.

[everell]

Re: Power supply build quality pictorial

Mitsuko KC-250 ATX (needs some fixin)
Note: one of bridge diodes gone and resistor beside it burnt.
Note: two resistors beside PWM chip DBL494 burned beyond recognition, also pc board
Note: 3 bulging output caps

[everell]

Re: Power supply build quality pictorial

Compaq Model HP-Q250GF3 250 watts

[Toasty]

Re: Power supply build quality pictorial

>>Compaq Model HP-Q250GF3 250 watts<<
Okay. I see the popped cap. But, what's up with the scorch/burn in between the mains caps?

What did you launch this time?

Toast

[Scenic]

Re: Power supply build quality pictorial

i guess that's where he desoldered the wires to the voltage selector switch.

i remove them most of the time and snip off all pins of that switch as it's not needed here..

and to prevent some idiots from "overclocking" their PC by setting it to 115V *boom* >.<

how dumb are some ppl ?!

"hm.. if i set that switch to 115V the PC should get double the voltage and OC better" ?!?

*argh*

edit: note: 230V here

[Toasty]

Re: Power supply build quality pictorial

Nah... Something torched in there and it looks like it's missing too.

Zoomed the area and attached it.

Toast

[everell]

Re: Power supply build quality pictorial

Shucks - I thought you would say something comical about the Mitsuko PSU. I thought it was the bigger laugh!

As for the compaq PSU, there was a missing zener diode along with evidence of flash and burn. On the other side of the two big caps there was at one time another zener, but also flash and burn even more so. These two zeners were across the two big caps. Seems that each cap has a bleeder resistor and (had) a zener across it. I used rubbing alcohol and brush to clean the flash carbon. Powered it up - no 5VSB - the good ole two transistor circuit with the Chinese plague.

When working on these PSU boards, I like to remove them from the case, solder a jumper where the wires go to the 115V/230V switch. This is needed since we are running on 115VAC in this country. Then solder a power cord to the power connections and I am ready to start testing. (before power up, look for obvious problems, like burned parts, bulging caps, etc.)

[Wizard]

Re: Power supply build quality pictorial

zeners is stupid thing to put across voltage outputs for overvoltage protection which will assuredly blow up the PSU worse than well designed SMPS shutting down on overvoltage.

Cheers, Wizarsd

[Brian C]

Re: Power supply build quality pictorial

zeners is stupid thing to put across voltage outputs for overvoltage protection which will assuredly blow up the PSU worse than well designed SMPS shutting down on overvoltage.

Cheers, Wizarsd

Err ... that is not Zener. It is M.O.V. or Metal Oxide Varistor. PCB reference number is ZNR ... There is no way to put Zener in that place... HIPRO won't made this kind of mistake, at least.

[Brian C]

Re: Power supply build quality pictorial

PSU maker turn out to be CHICONY POWER TECHNOLOGY CO LTD.
http://database.ul.com/cgi-bin/XYV/c...E/srchres.html

[Toasty]

Re: Power supply build quality pictorial

Everell >>Shucks - I thought you would say something comical about the Mitsuko PSU. I thought it was the bigger laugh!<<
No, but if you had typed "Note:" one more time, I would have stapled one to your forehead.

Upon closer inspection, I see it's really a German vacuum cleaner part. Mit-sucko...
~NETZEIL UNTER GEFAHRLICHER SPANNUNG NICT VOM BENUTZER~

WOW!! No Spanish or French or *nese or Yiddish

Brian C >>Err... that is not Zener. It is M.O.V. or Metal Oxide Varistor. PCB reference number is ZNR... There is no way to put Zener in that place... HIPRO won't made this kind of mistake, at least.<<
I take it you have one of these then? ZNR on the PCB would mean zener to me. Everell said it had a bleeder resistor across line caps too. I zoomed one of the pictures and you can see the *intact* MOV down behind the mains cap near the bridge rectifier.

Who or what is HIPRO? Are you referring to the Taiwan PSU manufacturer? Do you work for them? Why wouldn't they make this type of *mistake*?

Toast