stupid fujitsu 12v only psu 16pin connector

[mashmas]

I just want to revive this thread as I had the same Problem and found a solution

I got two Fujitsu Esprimo P920 E90+ for free from work with an i7-4770, 2x4gb ddr3 and 1xgt 630

I thought I could donate one cpu to my colleague as an upgrade from an i5 Haswell and combining the ram and slapping in an old GTX 760 laying around in the 2nd machine to donate it to my better half.

Here I am finding out, the PSU is only 250W without 8-PIN-PCIe-Power and worse, neither the PSU nor the MB is ATX-Standard!!! Now my options are buying a GPU or an ATX-MB with 1150 socket. Both at least 60USD. I really thought I don't need to spend anything on this project.

Well, after finding this thread, I thought I probably can use both PSU's in parallel and soldering a 8-PIN-PCIe-Power-Connector to the 2nd PSU and bridging the green wires from both PSU's together.

One evening, some soldering and Dremeling together, I find out, the machine won't POST for whatever reason. After some trial and error I thought, It couldn't be that simple as a missing ground, or could it? Well, I know now , this Fujitsu machine is quiet inteligent and can recognize an missing ground on the Case. As I glued the PSU's instead of screwing the PSU to the case, the case was no longer grounded which led to stop POST the system.

Here are some photos of my bad DREMEL and Soldering-Work (also, I have Daisy-Chained the PSU's )

View attachment 127043View attachment 127045View attachment 127046

Hello,
I'm having the same problem right now. The solution I went with is using a second power supply only for the GPU.
The computer start and everything work fine until there is a load on the GPU then the second power supply (the one connected to the GPU) turns off!
I'm hoping that the problem is the same as yours and I only need to ground it. I tried to ground it as in your photos, but it didn't work for some reason.
I was wondering if you can help me grounding it the right way.
Thanks.

 

[Caring1]

Is the second PSU a regular ATX style?
Perhaps the paperclip trick in the 24 pin header will work.

 

[mashmas]

Is the second PSU a regular ATX style?
Perhaps the paperclip trick in the 24 pin header will work.

Yes, it's a regular ATX style.
Here you can see how I did it, the same method you're mentioning I believe.

 

[Caring1]

I'm not sure why that doesn't work unless the power through the PCI-e affects it.
Perhaps this thread can help: https://www.techpowerup.com/forums/...plies-on-a-graphics-card.264634/#post-4222789

 

[Assimilator]

The solution is to take the Fujitsu proprietary junk, and throw it in the bin. Then buy proper ATX parts.

 

[jeremyshaw]

The solution is to take the Fujitsu proprietary junk, and throw it in the bin. Then buy proper ATX parts.

Luckily, ATX spec is moving to incorporate 12V-Only setups (depreciating the outdated 5V and 3.3V rails/wires from the 24pin plug altogether and beefing up the 12V deliver on the new, smaller plug).

 

[mashmas]

I'm not sure why that doesn't work unless the power through the PCI-e affects it.
Perhaps this thread can help: https://www.techpowerup.com/forums/...plies-on-a-graphics-card.264634/#post-4222789

Unfortunately, it didn't help but thanks anyway.

The solution is to take the Fujitsu proprietary junk, and throw it in the bin. Then buy proper ATX parts.

This is the plan for later, but I don't want to buy a new motherboard right now, I just bought a new GPU and PSU.

 

[Kendy Fujita]

Hi! Sorry about my english.

Yesterday I finished the adaptation inserting a psu (250w) from an old pc to my Primergy S3p. Now the original (250w) is charging MB, RAM and pcie cards (gtx 1050ti included), and for precaution, the ssd where windows is running.
This is the configuration and total power (I guess):

Motherboard (?)
Xeon 1240 v2 (80w)
32GB ram (about 20w)
Video card (80w)
Ssd (3-5w)

The other psu is for DVD, Front pannel drivers and 7 HDs

Now my doubt is if I can use the Usb Dat conector for the remaining 2 frontal usb ports. I had a search for the color order of conectors but can't find it.

 

[mashmas]

Hi! Sorry about my english.

Yesterday I finished the adaptation inserting a psu (250w) from an old pc to my Primergy S3p. Now the original (250w) is charging MB, RAM and pcie cards (gtx 1050ti included), and for precaution, the ssd where windows is running.
This is the configuration and total power (I guess):

Motherboard (?)
Xeon 1240 v2 (80w)
32GB ram (about 20w)
Video card (80w)
Ssd (3-5w)

The other psu is for DVD, Front pannel drivers and 7 HDs

Now my doubt is if I can use the Usb Dat conector for the remaining 2 frontal usb ports. I had a search for the color order of conectors but can't find it.View attachment 152794View attachment 152795View attachment 152796View attachment 152798View attachment 152799View attachment 152800View attachment 152801

May I ask what cables/colors have you used from the second power supply?

 

[Kendy Fujita]

May I ask what cables/colors have you used from the second power supply?

I used black(-)and red(+)for power. Black(-)and blue(+)for reset. Black and orange to power led. White cables (-)

 

[Shambles1980]

not understanding why you are using 2 psu's..
i ave the pinouts in the 1st post.. you can just get a 24pin extender cable and trim it to fit the motherboard. then wire a switch between green and ground..

if you rather it work as intended you can get a 5v to 12v converter, connect that to the standby and job's done..

if you are goin to the trouble of shorting out wires any way though id just go for the 1st option..

P.S
if you are running dual psu's
remember to power off the GPU's psu anytime you power the system down. Systems dont tend to boot properly if the gpu wasnt fully powered down on shut down.

 

[jonyibandi]

Hello!
I have just finished the power supply upgrade in my Fujitsu P510. The original PSU was removed and a 500W FSP supply was built in. I used the original 16 pin connector, removed 3.3V and 5V lines and added a step up converter for 11V to 5VUSB.
Additionally the 3.3V sense was connected to 3.3V and the supply lines for the GPU were not touched.
I am satisfied as it works like a charm and the new PSU fit perfectly.
Unfortunately there is no easy way for upgrading the PSU in such PCs.

 

[Ralfee]

Hello!
I have just finished the power supply upgrade in my Fujitsu P510. The original PSU was removed and a 500W FSP supply was built in. I used the original 16 pin connector, removed 3.3V and 5V lines and added a step up converter for 11V to 5VUSB.
Additionally the 3.3V sense was connected to 3.3V and the supply lines for the GPU were not touched.
I am satisfied as it works like a charm and the new PSU fit perfectly.
Unfortunately there is no easy way for upgrading the PSU in such PCs.

Hi Bandi! Can you please give us a detailed demonstration? Thanks in advance!

 

[Nakkun]

Hi, i have a issue so my psu is broke and i want to know if i can put another generic psu outside the case, sorry for my bad english thank you!

 

[mashmas]

Hi, i have a issue so my psu is broke and i want to know if i can put another generic psu outside the case, sorry for my bad english thank you!

No, unfortunately you can't use a generic PSU

 

[Gamer2k]

Hello i know its an old threat i got my hands on an Fujitsu Siemens it comes with 250W 16pin power supply and 16pin Slot! and i see many guys of u rewired the 16pin slot but does any one here try out to solder a24 pin connector to the 24pin multi power rail and make it work with a regular atx psu because i also got the problem but i dont want to rewire that thing or use 2 psu that i need way more power plugs because i have a atx board here where i can use its 24pin connector

 

[jonyibandi]

Dear Gentlemen!
I am sorry for not replying your question. The story:
1. I made first what you can read in my previous reply, but after some tests and high power consumption tasks found out that I had a bad PSU. 12V lines were not stable, there was a big drop on the output regarding the load. As I completely converted that psu to a "real 12V" one, desoldered unused cables, added 11V generation the warranty lost.
2. Then bought a bequiet system power 9 PSU. My goal was not loosing the warranty and create the system as simple as I can.
a) Removed the 12V and GND lines from the normal ATX connector and the external CPU supply connector ans connected to 16Pin conn.
b) Added a step-up converter that generates 11.2V (this is the value what comes out the original supply). The converter input, I used 5VSB. Fortunately there is an extra hole on the case back to fix the converter. An extra 4Pin conn. was used to connect the 5VSB and 11V.
c) PSU Enable cable also connected to the 16Pin connector.
(At the end I cleaned up all dust )

My experience: I have a gtx 1660s and i7-3770 inside, pc works great, made some cable management and added fans there are no cooling or powering issue.
Let me thank you for your help here in the forum, as I used the idea of the converter and the PSU pinout from here.
Finally some pictures!
If you have any question let me know! I promise I will check the forum and answer!

Have a nice weekend!
4ndraw

 

[Fantella1978]

I connect Fujitsu motherboards to standard ATX power supplies through an adapter that I make myself. I have 3 computers working for about 3 years through such adapters. Already made and sold more than 200 pieces in Ukraine. Works great, however Chinese thin wires sometimes get warm when using stress tests on computers with core i5 and i7 processors.

More details about the adapter.

And a video on how to connect it:

 

[monty50k]

Already made and sold more than 200 pieces in Ukraine.

Do you have a shop? I'd like to buy one!

 

[azzurro]

Only 23 out of 24 pins worked . The problem was multilayer a circuit board and high temperature tin.

Tin on the mother board had a high melting temperature. I couldn't get it melted with just soldering iron tip, so I drilled small hole (1-1,5mm) first and then heat conduction was better. When I lifted soldering iron up, the hole was again shut with remaining tin -> new drilling. So slowly and carefully with drill / soldering iron -combination I could get holes big enough to fit connector legs in. I also tried melting with small amount of soldering tin, but it didn't help - drilling gave better results.

At first attemp 3 pins didn't have proper connection (voltage), when the original PSU was connected. So I had to melt / re-solder those. Finally one 3,3V connector hadn't any voltage even tin seemed to be OK. This is a multilayer circuit board and the connection for this pin was in the middle layer. In few places around the holes the circuit board changed from green to brown before tin melted. Maybe this pin connector was damaged inside the circuit board when I had to use so much heat to melt the orginal tin.

So I sold my GTX 770 graphics adapter and bought GTX 1060, which works with one 6pin PCI-E power connector and my Fujitsu 500W power has output for that. But the motherboard didn't broke, so it was worth trying this

Hi!

so do you think this would have worked if the pins would have soldered properly?
I've got a rather beefy iron on my hands an woould give it a shot since I can get spare boards from work if I fry one.

Thanks!

 

[blackrabbit]

The sticker inside casing (at least in this W530) shows that it is a power supply point.

If I remember correctly, I used a multimeter to measure the the voltage on those points on motherboard (with Fujitsu PSU power on) before I tried to add the 24pin connector.

 

[azzurro]

The sticker inside casing (at least in this W530) shows that it is a power supply point.

If I remember correctly, I used a multimeter to measure the the voltage on those points on motherboard (with Fujitsu PSU power on) before I tried to add the 24pin connector.

sooooo?