Bitcoin Forum

Hello,

One of my rigs keeps shutting down randomly and cannot access it remotely, the fans on the gpu keeps spinning but it won't be mining and not accessible

So i was moving gpus around trying to see if any loose cables, so i unplugged the power connector on one of the gpus and it look like it is melting

http://anonymouse.org/cgi-bin/anon-www.cgi/http://img811.imageshack.us/img811/7302/1d0w.jpg (http://imageshack.us/photo/my-images/811/1d0w.jpg/)

Uploaded with ImageShack.us (http://imageshack.us)

I'm going to go out on a limb here and guess your cards are running too hot... What sort of case are you using ? Fan speeds ? VRAM speeds ? Scrypt or SHA256 hashing ? Need more info.

The rig shutting down is probably due to hitting a thermal limit.

The card running too hot shouldn't be melting the power connections!

My best guess would be that not all the plugs were properly inserted and making contact with the pins. This would have caused more current to flow down the ones that were making contact, heating them up and then melting the connectors!

You need new connectors for that and make sure all the connections are properly connected.

Wow I think the word connection has now lost it's meaning; I've said it too many times!

I did some troubleshooting it's a faulty motherboard and I am mining scrypt

If I try to run my cards stock speed no overclock I get one card mining at 70khash and then the rest 400 Khash

Once I overclock I can run them at 750

Tried a different mobo they are working fine

Now about the plugs where can I buy them?

It is xfx psu 1250 w modular gold series

Thanks

By new plugs I meant either getting raw PCI-E plugs and crimping the wires in or getting something likle this and splicing the wires;

http://www.systemagnostic.com/wp-uploads/2013/01/molex_pci-e.jpg

Although since you've got a modular PSU you could just write to the manufacturer and attach that photo, they should send you a new cable for free.

how many cards you have on that psu?and what are you mining?

3 gpus on the psu

and mining scrypt alt coins

hm,2 weird ... what are cards?


even that you have 6990 that should worked ...but if your gpus are more then 75c or 80c temp...then cards have more power consuptions so there is possible to cables go out...

buy new one...if you have again that problems undervolt your cards...

which vendor psu are you using ?

i am running 7970 gigabyte windforce and psu is xfx gold 1250W