Quote from: blacktux88 on March 15, 2018, 08:47:55 PM

we had the same error with our miners

the riser should sized perfectly for sata power source of the power supply-

we had max 2 riser at one cable

the cable get really hot , our miners are all in air condition

thanks

Quote from: teedeexyz on March 15, 2018, 06:47:20 PM

Hi guys,

Today it seems I fried my Asrock H110 Pro BTC+ mobo... Damage on the 12 connected GPUs I still have to assess Sad

The connector of one of the 3 power supply cables to the mobo caught fire. Luckily I had the reflex to pull the power cord from the socket the moment I saw the flames... You can see the damage in this picture. The connector and part of the power cable have melted and the mobo is scorched.

https://www.dropbox.com/s/44e5scw4gkqxfwv/Foto%2015-03-18%2019%2022%2020.jpg

Before replacing the mobo, I want to know what went wrong. I don't want to die in a fire because my rig acts up at night.

The wiring scheme:

https://www.dropbox.com/s/vv8s1lhvuuvcojh/rig%20sata-molex.png
The red line indicates the wire that caught fire.

What happened:
- I shut down my rig using remote desktop
- After a minute, I went to check if it was really shut down in the other room. I wasn't, it was on fire.

What I think happened: the mobo shut down PSU1, together with the connected GPUs to that PSU. However, somehow PSU2 failed to shut down, still powering the GPUs.
The GPUs tried to draw power from the mobo, which was only supplied by the one power line from PSU2 which got overloaded and caught fire.

Any thoughts on this?

So what is your solution then? I got two rigs and the first one has the ideal setup. It runs corsair hxi series and each gpu / riser pair is both connected to the same single cable. On my second rig I got EVGA psu, but since - unlike corsair - they're missing a double 6+2 pin I had to connect the risers with extra cables. Risers are still powered by molex however I had to use an adapter to sata and one cable powers now two risers. Should I avoid it and buy more 6pin cables?