Topic: Inexpensive 1400W Power supply (Read 1940 times)

I just got one and used it to power a miner. Thanks to who ever figured out the grounded pin. Saved me 65 bucks! It does get pretty hot at 80% and up but seems fine. Server grade stuff tends be pretty durable right?  
Pics of how it came out
https://ibb.co/FJQL9zr   
https://ibb.co/ZM32n0C

The moment I can get a part number for a card edge connector that can support the wattage;  Ill be drafting up a PCB which will be stupid simple.  Probably make it like the typical breakout boards you see;  maybe with a voltage readout, but probably bare and basic to keep costs down.    Should be able to happen with a simple single sided design, or at the worst with a double sided board.

At first I planned on scavenging the second half from an old AT 16 bit slot;  but its too much work to desolder, etc.... plus, i'm not sure how much wattage you would be able to cram through a connector from the 80's.


if you wanted to solder it properly, you would probably have to have a reflow table set near 200, and use a solder gun (like for automotive) to tin the contacts;  but those boards have THICK ass traces and eat up the heat pretty quick.  The other PSU I soldered to was even worse;  and it was fingers instead of a card-edge.    All the soldered cables, (including the PS_ON line) ended up just not adhering fully.  Removing that connector on the not pictured PSU;  I wasn't able to do because I lack the hot rework station and have no room at my home for one.

Hopefully I have time to revisit this in the next few months.
Working on rewriting my batches, daily life, taking care of my chameleon, trying to keep healthy/not bed ridden and keeping myself fed has been a chore in of itself... lol

Let me know how I can help test this.  I can get one PSU for starters, but don't want to deal with soldering wires for the very reason you stated.  Breakout board would be super cool to try.

yep....   Glad to see others utilizing these PSU's.

I was able to get it to power up a few months later when I revisited.  I was trying to use a wire with an open to jumper the short pin. (the PS ON line)

You need a LOT.... and I can't stress it enough, you need a METRIC SHITTON of heat to solder those wires to the connector to be reliable.

I have a source for the card edge connectors in china through a buddy whom puts together PSU kits for miners and sells them on ebay/amazon.    I just need to finally have him pass it down the line to get me a sample of one the proper size for this PSU and I plan to make a breakout board for it.     Its an odd shaped PSU for sure, but you can fit it into a LOT more different open spaces in miners than regular brick psu's can fit.


The price of this little 1400w puppy can't be beat though.


I think he gave me two of them to test last year.   I may get off my ass and finally get that connector....

Just jump the pin in my picture to ground and the PSU will turn on and output 12v

https://i.imgur.com/bdrYtKb.jpg

Has anyone found or been able to make/adapt a breakout board for these SuperMicro PSUs?

I tried jumpering the pin to - but it didn't power up... Very strange.  I hope I didnt get a faulty one...  But it was free.  And the pin on the datasheet I found originally is the very same .5mm short pin (at the end of the connector)  I already labeled the +, - and 5V rails.

I can make a breakout board for it;  does anyone have the connector part number to be able to interface with it?  That's where I kind of got lost on my attempt to make one.  But if someone knows of a good part number......  Ill just whip up my own at that point....  I haven't had the chance to etch my own board since High school so why not do it myself.

He hasnt said where he gets them from or how many he has access to;  but hes brought me a lot of good priced hardware in the past.  He keeps bringing batches of gridseed blades to the US from china to sell as well.

Ya, I have a few though from a chassis so I just soldered up a C19 on the AC side and 10ga wire to the dc output. Have a raspberry pi running AWS IoT code to control power on/off remotely. Working on getting the I2C and some other data gathering working now. Would be way easier if there were a decent breakout for them though

Those are fun because they're a super awkward shape, and because mains input and DC output are tightly packed together on one end.

Like this one?
http://www.ebay.com/itm/HP-C7000-2400W-92-Gold-Hot-Plug-Power-Supply-499243-B21-500242-001-488603-001-/401105555296?hash=item5d63c10f60:g:tSwAAOSwdsFUP~nr

Considering there's cheaper, bigger, better PSU, i don't really see them making one for these. Also the availability of these is not very clear and the price would need to be like 20$ per unit.

This would be great news only if someone would've made or would make a breakout board for it.

To a Bitcoin mining person, a power supply which has a readily available breakout board is "more valuable" because it's much easier to put together a working solution. I can see where that might tend to bid up the prices a bit for the Dell 750W and HP1200W and other popular supplies. A less common one, such as this, for which I don't there is a breakout board means that somebody who isn't going to plug it into the server for which it's designed will need to do more work to make it useful as a high current 12V supply.

The Ebay price looks to be about $70-75 shipped in the USA.

Jared: What price is your friend looking to get, and where (e.g. USA, EU, what)?

Ebay has a nice list, the prices are not to bad

http://www.ebay.com/sch/i.html?_from=R40&_trksid=p2050601.m570.l1313.TR0.TRC0.H0.TRS0&_nkw=Supermicro+Power+Supply+PWS-1K41P-1R+rev1.1&_sacat=0

but with no real easy way of powering them with out using a server , i can see why kind of they are priced how they are.!!! . The PSU that have custom made break out boards seem to cost more on ebay or have custom made boards that power them .not sure th if train of thought is right they just seem to cost more.

You might want to consider the following:

http://dmitry-pakhatov.blogspot.com/2015/01/supermicro-power-supply-pws-1k41p-1r.html

Looks like you might be able to use this to turn it on, and/or fashion your own connection. I got to this via Google for

"pws-1k41p-1r pinout"

How much are this kind of PSU?

Except that it doesn't. At all. 

One of the pins is 1mm shorter than the others (PS_ON).
Connect to DC ground and it will turn on.

It looks exactly like the Antminer S4 PSU

it should be  a good quality  psu   that company makes a lot of server pcs

find some one to design a custom break out board with cable plug or figure out how to solider wires in the right place with pcie cables on one end. then it should work on any miner that has pcie plugs , sorry i'm just a user that knows how things work etc with no skill of designing.the way it look it is very limited with break out boards.

that does look sweet thu if you find a break out board that fits it ill buy two .

I got my hands on one of these as a test sample.   My friend says he has access to a LOT of them I believe.

Supermicro PWS-1K41P-1R





Anyone know if these need any sort of external input to power on?  The power LED lights when plugged in, but the 12V rail doesn't put anything out.

Anyone worked with these?  Any adapters out there?