12 card rig, 3 server psu +PICO | Bitcointalksearch.org

bartjeyayo

newbie

Activity: 29

Merit: 0

Quote from: bigjee on January 26, 2018, 12:57:26 PM

Quote from: P00P135 on January 24, 2018, 09:42:49 PM

Quote from: bigjee on January 24, 2018, 09:12:08 PM

So if i have this right a lot of the pain in this thread couldve been avoided by using a different bb?
such as the one below:
https://www.ebay.ca/itm/DPS-1200FB-QB-6-Pin-A-Power-Supply-Breakout-Board-Adapter-For-Ethereum-Mining/362215797541?hash=item5455be7325:g:JTgAAOSw4HNaXu0v

Or am i missing anything. Sure i only have 10 pcie cables vs 12 but maybe i wouldnt use a pico then since can get an extra 2 pcie with atx

or a properly wired 6pin to CPU 8pin to plug directly into the motherboard and avoid the pico 4pin plug altogether.

Ah okay. thanks.
I was thinking something like this would work too?
https://www.ebay.ca/itm/5x-ATX-4-Pin-Male-to-8-Pin-Female-EPS-Power-Cable-Cord-Adapter-CPU-Power-Supply/281297434879?hash=item417ea238ff:g:G5YAAOSwiDFYMvY0
combined with
https://www.ebay.ca/itm/With-6Pin-Input-12V-DC-PC-ATX-Power-Supply-unit-For-mini-ITX-Pico-PSU-Out-180W/263070008251?hash=item3d4031c3bb:g:HKIAAOSwq~tZWo5r

I'm running 15 rigs with these PicoPSU's: https://www.aliexpress.com/item/TOP-SELL-DC-12V-160W-24PIN-Pico-ATX-Switch-PSU-Car-Auto-Mini-ITX-DC-TO/32832761007.html

Bimmber

newbie

Activity: 210

Merit: 0

My mobo won`t even POST.

Somebody pass me the shotgun please!!! CPU fan spins for about 12 seconds, then stops for few, starts spinning again. It indicates its an electrical problem. What I tried - swapping power supplies, another brand new motherboard, removing one RAM stick. Tried inserting video card into PCIs slot and connecting monitor to it. Monitor says NO SIGNAL. Any ideas?!

https://i.imgur.com/uZ9VLOS.jpg

bigjee

full member

Activity: 434

Merit: 107

Quote from: P00P135 on January 24, 2018, 09:42:49 PM

Quote from: bigjee on January 24, 2018, 09:12:08 PM

So if i have this right a lot of the pain in this thread couldve been avoided by using a different bb?
such as the one below:
https://www.ebay.ca/itm/DPS-1200FB-QB-6-Pin-A-Power-Supply-Breakout-Board-Adapter-For-Ethereum-Mining/362215797541?hash=item5455be7325:g:JTgAAOSw4HNaXu0v

Or am i missing anything. Sure i only have 10 pcie cables vs 12 but maybe i wouldnt use a pico then since can get an extra 2 pcie with atx

or a properly wired 6pin to CPU 8pin to plug directly into the motherboard and avoid the pico 4pin plug altogether.

Ah okay. thanks.
I was thinking something like this would work too?
https://www.ebay.ca/itm/5x-ATX-4-Pin-Male-to-8-Pin-Female-EPS-Power-Cable-Cord-Adapter-CPU-Power-Supply/281297434879?hash=item417ea238ff:g:G5YAAOSwiDFYMvY0
combined with
https://www.ebay.ca/itm/With-6Pin-Input-12V-DC-PC-ATX-Power-Supply-unit-For-mini-ITX-Pico-PSU-Out-180W/263070008251?hash=item3d4031c3bb:g:HKIAAOSwq~tZWo5r

Bimmber

newbie

Activity: 210

Merit: 0

Quote

I'm definitely right. Wink

101%

Quote

Your multi-meter picture shows you are reading the voltage improperly. You have your red probe on the black wire, and black probe on the yellow wire. If you'd have put red on yellow and black on black, you'd have seen -12V.

Yes, you are correct, it shows -12v

Quote

Thankfully you didn't fry the motherboard etc!

I might have Sad

I get nothing on the monitor, it says no signal for 3 seconds, then monitor light just flashes and black screen Sad

Or it could be PICO. I`m getting ATX psu from local shop today to try.

P00P135

full member

Activity: 1123

Merit: 136

Quote from: bigjee on January 24, 2018, 09:12:08 PM

So if i have this right a lot of the pain in this thread couldve been avoided by using a different bb?
such as the one below:
https://www.ebay.ca/itm/DPS-1200FB-QB-6-Pin-A-Power-Supply-Breakout-Board-Adapter-For-Ethereum-Mining/362215797541?hash=item5455be7325:g:JTgAAOSw4HNaXu0v

Or am i missing anything. Sure i only have 10 pcie cables vs 12 but maybe i wouldnt use a pico then since can get an extra 2 pcie with atx

or a properly wired 6pin to CPU 8pin to plug directly into the motherboard and avoid the pico 4pin plug altogether.

bigjee

full member

Activity: 434

Merit: 107

So if i have this right a lot of the pain in this thread couldve been avoided by using a different bb?
such as the one below:
https://www.ebay.ca/itm/DPS-1200FB-QB-6-Pin-A-Power-Supply-Breakout-Board-Adapter-For-Ethereum-Mining/362215797541?hash=item5455be7325:g:JTgAAOSw4HNaXu0v

Or am i missing anything. Sure i only have 10 pcie cables vs 12 but maybe i wouldnt use a pico then since can get an extra 2 pcie with atx

Prelude

legendary

Activity: 1596

Merit: 1000

Quote from: Bimmber on January 24, 2018, 03:23:54 PM

Prelude, I think you were right....!!! I forced 4 pin into BB 6 pin other way around, plugged 4 pin from PICO into mobo power and powered up, it works, cpu fan spins, no fire, no smoke, no smell....!!!

I'm definitely right. Wink

Your multi-meter picture shows you are reading the voltage improperly. You have your red probe on the black wire, and black probe on the yellow wire. If you'd have put red on yellow and black on black, you'd have seen -12V.

Thankfully you didn't fry the motherboard etc!

Bimmber

newbie

Activity: 210

Merit: 0

Prelude, I think you were right....!!! I forced 4 pin into BB 6 pin other way around, plugged 4 pin from PICO into mobo power and powered up, it works, cpu fan spins, no fire, no smoke, no smell....!!!

Bimmber

newbie

Activity: 210

Merit: 0

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

https://i.imgur.com/45vnoJX.jpg
https://i.imgur.com/45vnoJX.jpg

https://i.imgur.com/3BoiVbB.jpg
https://i.imgur.com/3BoiVbB.jpg

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

https://i.imgur.com/Yv00OAb.jpg
https://i.imgur.com/Yv00OAb.jpg

Bimmber

newbie

Activity: 210

Merit: 0

Quote

That is NOT the issue at all. As soon as I saw your pics I thought "fuck, hope he hasn't powered that on yet.." and then scrolled through and saw you scrapped 2 PICOs.

You're feeding the pico power from a PCI-e 6 pin connector on the breakout board. The pico's input connector is NOT a PCI-e connector, it's a CPU connector. You managed to make it fit in there, but it's polarity is reversed. Compare it to your actual PCI-e connectors, you'll see that the yellow cables are on the bottom, and black is on top. You've just sent 12V to ground, and ground to 12V to your poor picos.

If you can cram the next pico's 4 pin connector upside down into a 6 pin, you'll be fine.

I have checked with multi meter, +12v comes out from breakout board where black & yellow cables are connected from PICO. PICO`s 4 pin connector fits perfectly into 6 pin breakout board connector, did not have to force it, but it only fits in on one side due to shape of connector.

I tried following - just PICO on its own, not plugged into mobo, powered on HP psu - no sparks, no smoke, no smell, runs like a dream! If you plug it into mobo and plug 4 pin into mobo, bang, fire! To me, it indicates BB is giving correct + & - to power PICO.

I also checked with multi meter what comes out from PICO 4 pin which I plug into mobo, its +12v.

fanatic26

hero member

Activity: 756

Merit: 560

Quote from: Bimmber on January 23, 2018, 12:35:35 PM

Quote

No those molex are not power outputs

No, they are outputs.

You are reading it wrong. They are not power outputs, they help supplement power to the PCIE ports on the board.

fanatic26

hero member

Activity: 756

Merit: 560

Quote from: spinx on January 23, 2018, 04:55:06 AM

Depending on what kind of pci-e risers you got, you might need 5V from the server psu. I had old risers (006C?) that only had a molex connector, this is because gpu's need 5V for start signal as i understood. The better model of pci-risers has this 12V -> 5V voltage transformation built in, and therefore only requires 12V on a 6pin pci-e connector.

Risers do not need 5v. I run a PICO setup and I also have PCIE to 3 molex adapters to power the cards. Everything is powered by 12v only.

Prelude

legendary

Activity: 1596

Merit: 1000

Quote from: Bimmber on January 23, 2018, 08:23:33 AM

Response from PICO distributor:

Oh dear. I can immediately see what is wrong here.

In image 2 the *output* of the picoPSU is connected to the motherboard AUXPWR1 – which is also an output!

According to the manual for your TB250-BTC this is an auxiliary power connection (to give additional power to) graphics cards. i.e. power goes into motherboard through the ATX connector, and comes out here.

Hopefully this hasn’t damaged the motherboard. It has obviously damaged the picoPSU.

FWIW the output you connected is to power a hard drive or similar device.

That is NOT the issue at all. As soon as I saw your pics I thought "fuck, hope he hasn't powered that on yet.." and then scrolled through and saw you scrapped 2 PICOs.

You're feeding the pico power from a PCI-e 6 pin connector on the breakout board. The pico's input connector is NOT a PCI-e connector, it's a CPU connector. You managed to make it fit in there, but it's polarity is reversed. Compare it to your actual PCI-e connectors, you'll see that the yellow cables are on the bottom, and black is on top. You've just sent 12V to ground, and ground to 12V to your poor picos.

If you can cram the next pico's 4 pin connector upside down into a 6 pin, you'll be fine.

Bimmber

newbie

Activity: 210

Merit: 0

Got another brand new PICO delivered today, did not plug in Molex into mobo, but result is same - burned again! Sparks, smoke and smell.

What on earth is going on?! Where is a problem? Huh

Corsa1r

member

Activity: 89

Merit: 10

No, plugging in extra molex from psu actually helps motherboard give auxiliary power to graphics cards, because it can't supply everything itself.

Bimmber

newbie

Activity: 210

Merit: 0

https://i.imgur.com/DQvO3nt.jpg

To me, it sounds as a supply.

P00P135

full member

Activity: 1123

Merit: 136

Quote from: Bimmber on January 23, 2018, 01:07:43 PM

That`s what BIOSTAR manual says, not me Tongue

But its 101% output, because fire and smoke started and PICO burned within 0.5 sec after I plugged it in.

No where does it say "output", this is just your interpretation which is 101% wrong.

Bimmber

newbie

Activity: 210

Merit: 0

That`s what BIOSTAR manual says, not me Tongue

But its 101% output, because fire and smoke started and PICO burned within 0.5 sec after I plugged it in.

P00P135

full member

Activity: 1123

Merit: 136

Yeah dood! enhance the power of your graphics with these two molex, they plug right into your gpu's for extra power when you need it the most! Huh

Bimmber

newbie

Activity: 210

Merit: 0

Quote

No those molex are not power outputs

No, they are outputs.

https://i.imgur.com/GHWC5KK.jpg

Topic: 12 card rig, 3 server psu +PICO (Read 686 times)