Bladecenter H 2880W Breakout Boards. Selling from stock, limited time discount

[dmwardjr]

I have had about a 96% success rate in these used power supplies. I have yet to have one of these breakout boards go dead. Even the prototypes I received back in December are still ticking strong and have many hours on them now. The breakout board has nothing to do with the fans at all, that is all done inside the power supply.

So if you see one light with the power switch flipped to off, then when you switch it on you see two green lights, and still have no fan - it is most definitely the power supply.

Well, I had a few of mine do what you said, made the proper solder connections on the breakout board and everything is just fine now.  Meaning it was not the power supply.  Be careful of making flat statements.

I'm not saying this to discredit the breakout boards at all.  I absolutely love them!!!  I just thought the record should be set straight.

[LordPaco]

I have had about a 96% success rate in these used power supplies. I have yet to have one of these breakout boards go dead. Even the prototypes I received back in December are still ticking strong and have many hours on them now. The breakout board has nothing to do with the fans at all, that is all done inside the power supply.

So if you see one light with the power switch flipped to off, then when you switch it on you see two green lights, and still have no fan - it is most definitely the power supply.

Well, I had a few of mine do what you said, made the proper solder connections on the breakout board and everything is just fine now.  Meaning it was not the power supply.  Be careful of making flat statements.

I'm not saying this to discredit the breakout boards at all.  I absolutely love them!!!  I just thought the record should be set straight.

If you have had this problem you should elaborate exactly what you had to solder to fix your breakout boards for the previous poster that is having this issue, instead of just telling me I'm wrong. Nothing is really accessible anyway. I'm curious exactly what traces you are correcting. J4bberwock can easily confirm if a defect in his board could ever precipitate this issue. Out of the 68 boards I have been running for over 6 months now I have had no issue with any of them in any case. I just paid for 50 more.

[J4bberwock]

So I bought a couple of break out boards a few months ago and it seem they are not working now? The fans on the psu wont spin , I thought the psus were bad ( 2880 IBM ones )
But I got two brand  new psus off eBay and its the same deal, first two green lights go on
Psu starts to get super hot BC fans wont activate

I've tried sp20s ants 🐜. Any ideas?

Hi, it will depend on the date you ordered the boards.
The very first batch had some trouble because the pins dimensions were out of specs, so the contact wasn't perfect on the signal to turn on the psu or the fans.
The batches after that have signal pins soldered systematically to avoid any trouble, even if the pins are now to specs.

You can probably see even without removing the white plate if the pin to turn on the PSU is soldered



the one under the "n" is usually visible from the outside.

the one in the square under the "H" turns the fans on.

[LordPaco]

Well I'll be a monkeys uncle. I must have gotten lucky then your prototypes must have been before that first batch. Good info to know if I ever have this issue.

[J4bberwock]

I have had about a 96% success rate in these used power supplies. I have yet to have one of these breakout boards go dead. Even the prototypes I received back in December are still ticking strong and have many hours on them now. The breakout board has nothing to do with the fans at all, that is all done inside the power supply.

So if you see one light with the power switch flipped to off, then when you switch it on you see two green lights, and still have no fan - it is most definitely the power supply.

Well, I had a few of mine do what you said, made the proper solder connections on the breakout board and everything is just fine now.  Meaning it was not the power supply.  Be careful of making flat statements.

I'm not saying this to discredit the breakout boards at all.  I absolutely love them!!!  I just thought the record should be set straight.

If you have had this problem you should elaborate exactly what you had to solder to fix your breakout boards for the previous poster that is having this issue, instead of just telling me I'm wrong. I'm curious exactly what traces you are correcting. Nothing is really accessible anyway. J4bberwock can easily confirm if a defect in his board could ever precipitate this issue. Out of the 68 boards I have been running for over 6 months now I have had no issue with any of them in any case. I just paid for 50 more.

He already posted about it in my thread, and the picture I took to explain what to solder is in his post too.
The very first 100 boards sent in February suffered from this defect. All later batches have the signal pins soldered to prevent any trouble.

On a side note, I'm on vacations right now.
I'll be back home on friday or saturday, your order will ship on monday

[Marvell1]

So I bought a couple of break out boards a few months ago and it seem they are not working now? The fans on the psu wont spin , I thought the psus were bad ( 2880 IBM ones )
But I got two brand  new psus off eBay and its the same deal, first two green lights go on
Psu starts to get super hot BC fans wont activate

I've tried sp20s ants 🐜. Any ideas?

Hi, it will depend on the date you ordered the boards.
The very first batch had some trouble because the pins dimensions were out of specs, so the contact wasn't perfect on the signal to turn on the psu or the fans.
The batches after that have signal pins soldered systematically to avoid any trouble, even if the pins are now to specs.

You can probably see even without removing the white plate if the pin to turn on the PSU is soldered



the one under the "n" is usually visible from the outside.

the one in the square under the "H" turns the fans on.

Good catch

I was able to fix one of the breakout boards by resoldering the contact , now the PSU works so fuck me I have 2 extras of these PSUs and nothing for them to
power if you could have told me to check that bit on the breakout boards when I first had the issues could have saved me a bit of cash. I'll have to feebay the extra PSU's

The other breakout board seems to be toast probably would have to take it apart to figure out what's wrong with it but yeah its the breakout boards since the one I "Fixed" powers the fans on all the PSU's now even the used ones I got from you.

[J4bberwock]

So I bought a couple of break out boards a few months ago and it seem they are not working now? The fans on the psu wont spin , I thought the psus were bad ( 2880 IBM ones )
But I got two brand  new psus off eBay and its the same deal, first two green lights go on
Psu starts to get super hot BC fans wont activate

I've tried sp20s ants 🐜. Any ideas?

Hi, it will depend on the date you ordered the boards.
The very first batch had some trouble because the pins dimensions were out of specs, so the contact wasn't perfect on the signal to turn on the psu or the fans.
The batches after that have signal pins soldered systematically to avoid any trouble, even if the pins are now to specs.

You can probably see even without removing the white plate if the pin to turn on the PSU is soldered



the one under the "n" is usually visible from the outside.

the one in the square under the "H" turns the fans on.

Good catch

I was able to fix one of the breakout boards by resoldering the contact , now the PSU works so fuck me I have 2 extras of these PSUs and nothing for them to
power if you could have told me to check that bit on the breakout boards when I first had the issues could have saved me a bit of cash. I'll have to feebay the extra PSU's

The other breakout board seems to be toast probably would have to take it apart to figure out what's wrong with it but yeah its the breakout boards since the one I "Fixed" powers the fans on all the PSU's now even the used ones I got from you.

If you soldered both pins on the second breakout board the last thing that can fail is the switch.
There are two holes next to it that I use for testing purpose and can also be used for a remote switch. You can connect both holes with a paperclip to bypass the switch. Spacing is also correct to solder 2 pins and use a jumper.

[Marvell1]

So I bought a couple of break out boards a few months ago and it seem they are not working now? The fans on the psu wont spin , I thought the psus were bad ( 2880 IBM ones )
But I got two brand  new psus off eBay and its the same deal, first two green lights go on
Psu starts to get super hot BC fans wont activate

I've tried sp20s ants 🐜. Any ideas?

Hi, it will depend on the date you ordered the boards.
The very first batch had some trouble because the pins dimensions were out of specs, so the contact wasn't perfect on the signal to turn on the psu or the fans.
The batches after that have signal pins soldered systematically to avoid any trouble, even if the pins are now to specs.

You can probably see even without removing the white plate if the pin to turn on the PSU is soldered



the one under the "n" is usually visible from the outside.

the one in the square under the "H" turns the fans on.

Good catch

I was able to fix one of the breakout boards by resoldering the contact , now the PSU works so fuck me I have 2 extras of these PSUs and nothing for them to
power if you could have told me to check that bit on the breakout boards when I first had the issues could have saved me a bit of cash. I'll have to feebay the extra PSU's

The other breakout board seems to be toast probably would have to take it apart to figure out what's wrong with it but yeah its the breakout boards since the one I "Fixed" powers the fans on all the PSU's now even the used ones I got from you.

If you soldered both pins on the second breakout board the last thing that can fail is the switch.
There are two holes next to it that I use for testing purpose and can also be used for a remote switch. You can connect both holes with a paperclip to bypass the switch. Spacing is also correct to solder 2 pins and use a jumper.

I'll take a look at those two holds and

I didn't solder anything on the other one (not working one) , I looked at all the pins and they seem to make contact.  The switch works though since the unit actually powers on , I'll send you a PM for another  two breakout boards and worry about fixing this one later.  I don't have anything for these units to power until I get my alcheminer fixed though.

[Sweminer777]

Can anyone tell me how loud is this PSU? i am considering to invest some serious cash in one , but the loudness is a problem for my mining operation it needs to be clear to silent.

[philipma1957]

Can anyone tell me how loud is this PSU? i am considering to invest some serious cash in one , but the loudness is a problem for my mining operation it needs to be clear to silent.

then this is too loud.  what are your power needs? 2000 watts? 1500 watts?  2880 watts?

[Sweminer777]

Can anyone tell me how loud is this PSU? i am considering to invest some serious cash in one , but the loudness is a problem for my mining operation it needs to be clear to silent.

then this is too loud.  what are your power needs? 2000 watts? 1500 watts?  2880 watts?

about 2300watts. running atm 2x 1000w pc psu but i need about 1400 for one machine so lacking 400w

[Finksy]

This is pretty much the loudest PSU on the market. 3x high-RPM server-environment fans running full rip is akin to a jet engine.

[dmwardjr]

I have had about a 96% success rate in these used power supplies. I have yet to have one of these breakout boards go dead. Even the prototypes I received back in December are still ticking strong and have many hours on them now. The breakout board has nothing to do with the fans at all, that is all done inside the power supply.

So if you see one light with the power switch flipped to off, then when you switch it on you see two green lights, and still have no fan - it is most definitely the power supply.

Well, I had a few of mine do what you said, made the proper solder connections on the breakout board and everything is just fine now.  Meaning it was not the power supply.  Be careful of making flat statements.

I'm not saying this to discredit the breakout boards at all.  I absolutely love them!!!  I just thought the record should be set straight.

If you have had this problem you should elaborate exactly what you had to solder to fix your breakout boards for the previous poster that is having this issue, instead of just telling me I'm wrong. Nothing is really accessible anyway. I'm curious exactly what traces you are correcting. J4bberwock can easily confirm if a defect in his board could ever precipitate this issue. Out of the 68 boards I have been running for over 6 months now I have had no issue with any of them in any case. I just paid for 50 more.

My apologies, LordPaco.  I did not mean to disrespect you, Sir.  That was not my "intent" at all.  I assumed you had already seen the post in this thread regarding the solder connections needed for the fans to work.  This was discussed earlier in the thread before.  I assumed you had already read this in earlier pages in the thread.

If anyone from the initial group buy in North America has any problems with any of their boards, I would be happy to have replacements sent out immediately on behalf of J4bberwock.  Send me and J4bberwock a PM if you have any defects at all and we'll get you sorted out.

I live in the USA but I bought mine straight from J4bberwock.  I bought 8 of them and 4 of them turn on the PSU but do not turn on the fan.  I'm going to tear away the white glue stuff and make the following solder connections myself...



If this voids any type of warranty on them doing it myself, please let me know.

I did follow up with J4bberwock about this fixing the problem after making proper solder connections but I did not follow up with the thread.  If I had done so, we would probably not be having this discussion.

So, again, please don't take my comment as trying to win points in an argument.  That was not my intent at all.  I simply wasn't thinking.  It must have been when I was very tired and not thinking straight.  I'm up at all hours of the night quite often.

I like you, LordPaco, and I love what you are doing with your farm.  Keep up the great work and I wish you the best in your mining endeavor.  

Cheers M8

[Sweminer777]

Is it possible to Modifie this PSU.


I i cut 2 bit holes on top and put 140mm fans or 120mm fans should it run smoothly ?

[pekatete]

Is it possible to Modifie this PSU.


I i cut 2 bit holes on top and put 140mm fans or 120mm fans should it run smoothly ?

That's an inspired thought ... if only to reduce the pitch of the nosie from its fans. It should work if the fan has comparable (even better) airflow, and I'd suggest you'd be better off putting the inards into another (new) enclosure altogether, that way you can focus the airflow from the 120/140mm fans ala S5 printed mods ....

[Finksy]

Yes it is possible, this was my hack job:


Although I have not had a chance to mess around with it and get the PWM hooked up, it is a possibility to run this at full load.  Another member graciously shared his IR thermal images of the PSU right after shutting it down and removing the lid to show where most of the heat emits from:




Interestingly, heat was not concentrated where I would have expected (with my complete lack of electronics knowledge mind you), and had I seen this before modding my case I may have re-thunk my fan layout. One important factor was blocking most of the airflow through the ventilated panel where the original fans mount (the front in this last picture), to concentrate more airflow towards the backplane/breakout board connector end, as it appears there is a large amount of heat emitting from under that center thick aluminum plate. 

Also, I do not suggest removing components and re-mounting them in a new chassis, it would be a complete waste of time at best, and potentially dangerous at worst.

[Sweminer777]

Yes it is possible, this was my hack job:


Although I have not had a chance to mess around with it and get the PWM hooked up, it is a possibility to run this at full load.  Another member graciously shared his IR thermal images of the PSU right after shutting it down and removing the lid to show where most of the heat emits from:




Interestingly, heat was not concentrated where I would have expected (with my complete lack of electronics knowledge mind you), and had I seen this before modding my case I may have re-thunk my fan layout. One important factor was blocking most of the airflow through the ventilated panel where the original fans mount (the front in this last picture), to concentrate more airflow towards the backplane/breakout board connector end, as it appears there is a large amount of heat emitting from under that center thick aluminum plate. 

Also, I do not suggest removing components and re-mounting them in a new chassis, it would be a complete waste of time at best, and potentially dangerous at worst.

Thanks, this is what i was wondering, i saw modified 2000bbb  PSU like this, tought the modification could work.

How is the noise now? i am trying to get my system silent, right now it don't emit sound above 21db around that.

Most says that this PSU is high pitched so close to silent i am looking for.


Is the little fan connected to internal fan wiring ?

[Finksy]

The larger fan is a ~4A delta, so I didn't bother trying to connect through the PCB, I fed power directly from a PCIe plug.  With these fans at 100%, it is not much quieter than the stock 3 fans, and again never got around to getting the PWM from the board working.  Maybe J4bberwock can chime in, I know he was working on something himself as well.  In my experience, these PSU's are not good for someone looking for a quiet solution, it is just too much heat to be dissipated in a small case volume, you would need to run less Wattage on these to get away with a quiet fan solution, and that pretty much defeats the purpose of these PSU's to begin with.

[Sweminer777]

The larger fan is a ~4A delta, so I didn't bother trying to connect through the PCB, I fed power directly from a PCIe plug.  With these fans at 100%, it is not much quieter than the stock 3 fans, and again never got around to getting the PWM from the board working.  Maybe J4bberwock can chime in, I know he was working on something himself as well.  In my experience, these PSU's are not good for someone looking for a quiet solution, it is just too much heat to be dissipated in a small case volume, you would need to run less Wattage on these to get away with a quiet fan solution, and that pretty much defeats the purpose of these PSU's to begin with.

Yeah this is what i am afraid of, i am on a closed enviroment, the ambient is about 38celsios up to 40 when the machiens been up for like 3-4 days whit no rest.

I might consider to run dps 2000bb maybe ?.

Prices are about the same of them two psu's but i am looking for the better effience.

I was thinking to maybe cut open the entire top and put 4x 120mm fans at 7 volts , could this take care of the bussines ?


I need to run about 2400 watts, sp20 and C1 , and one coming s3.

[chitolsp]

I'm trying to buy the breakout board, but I don't know where. Please help