Shorted PSU. Any idea why?

[Colohash]

Hi everyone, I am building a 13 GPU 1060 rig and I ran into an issue. I set up the first 7 cards on one PSU, ran it for 24 hours and everything was fine. I went to set up the last 6 cards and the PSU shorted out (Smoke, pops, bad smells)

Here is an extended timeline.

1) Unplugged MOBO cable and plugged in dual PSU cable - 2 wire connection to the original PSU powering the board, full wire connection to the new PSU

2) Plugged in all cables for the risers (no cards in the risers, just powered)

3) Plugged in all cables PCIE cables for the cards (again, no cards just cables)

4) Booted it up.

Everything worked for a few minutes, I went into the other room to gather some parts and I heard the pops.

Some other details and notes

1) The rig still works fine on the first psu (with and without the cable)



So my question to you is why and more importantly how to move forward with this build and not have this happen again.

Should I scrap all the risers and dual PSU cable?

Any help would be appreciated

[philipma1957]

Hi everyone, I am building a 13 GPU 1060 rig and I ran into an issue. I set up the first 7 cards on one PSU, ran it for 24 hours and everything was fine. I went to set up the last 6 cards and the PSU shorted out (Smoke, pops, bad smells)

Here is an extended timeline.

1) Unplugged MOBO cable and plugged in dual PSU cable - 2 wire connection to the original PSU powering the board, full wire connection to the new PSU

2) Plugged in all cables for the risers (no cards in the risers, just powered)

3) Plugged in all cables PCIE cables for the cards (again, no cards just cables)

4) Booted it up.

Everything worked for a few minutes, I went into the other room to gather some parts and I heard the pops.

Some other details and notes

1) The rig still works fine on the first psu (with and without the cable)



So my question to you is why and more importantly how to move forward with this build and not have this happen again.

Should I scrap all the risers and dual PSU cable?

Any help would be appreciated

Were they same model psu?

What models were they?

First off bad riser
Second did you shield all the usb connections to the mobo they could have shifted and shorted.

[Colohash]

First one was an EVGA 1000 second was EVGA 750 (now dead)

The risers were powered but not connected to cards or usb

https://www.mikescomputershop.com/product/6318918

https://www.mikescomputershop.com/product/6318920

[dagarair]

on 13 gpu's.... seems low as hell.  I try and never run dual psu's.  That crappy little 5 dollar link cable is probably your fault.  If 1600 watts is all you need then get a 1600 watt evga and be done.

[Colohash]

1060 don't pull much. I am thinking the cable could be the issue as well but I have used them many times with no issues

[Colohash]

Confirmed it was just a defective psu

[Phantoms001]

Sometimes they just go bad.  You put it under load and a capacitor went.  It happens. 

[lunobird]

I've done this before.  I had a crappy old school psu laying around where the back of the psu switch had to be manually set to 120volt or 240 volt.  I had 240 volt lines and accidently flipped the switch to 120 volt,  POP! smoke, sparks, Scary as hell. LOL.

[cryptocoinfarmer]

I recommend getting EVGA SuperNOVA 1600 G2 + EVGA 850 B3
This will be a safe and stable variant for you.
My advice don't use does crappy 2 wire adapter. Safer is to use PSU synchronizer like that: https://imgur.com/a/2ftky

[phuocduong]

i recomened using 2x1000w PSU 80gold plus, 1 using for 7x1060, 1 using for 6x1060 and mainboard