Motherboard cable burning on 2 different rig

[ledsgo]

Hi,

I am using ASUS PRIME Z270-A motherboard, after working for a few months the big cable that goes from the psu to the motherboard
burned like this picture shows:



Here is the link to the image, I don't understand why it does not appear

https://imgur.com/MtXySTd

First time it happened with PSU EVGA supernova 750, this time with a Corsair CP-9020140-NA HX1200 so it is probably not the PSU.

I would like to know if someone else had this problem before and how to solve it?

Thanks!

[Vann]

A good first step may be to post your rig configuration so people can know what you have connected to the board and PSU. My crystal ball broke yesterday.

[ledsgo]

A good first step may be to post your rig configuration so people can know what you have connected to the board and PSU. My crystal ball broke yesterday.

My first rig had:
6 GPU Nvidia 1060 6GB
2 psu EVGA supernova 750

The second one
7 AMD RX580
1 psu EVGA supernova 750 and 1 psu Corsair CP-9020140-NA HX1200
1 x Intel Celeron G3930 Kaby Lake Dual-Core 2.9 GHz
1 x Kingston A400 2.5" 120GB SATA

Both run on windows 10
Using claymore dualmine - ether and something else

If you need more detail, I will find out.

[Vann]

How were the PSU's connected together? How were the risers and cards connected to the PSU's? What kind of risers?

[ixonite]

This happened to me once with my gaming rig when there was a sudden blackout during a storm(common occurrence in turkey). A surge in voltage can cause hardware damage if you do not have surge protector. I now use UPS to protect all my hardware, If there is a high voltage spike they will probably take the hit and shut off. Its been 2 years and nothing is damaged again yet.

Maybe something is causing voltage fluctuation in your house?

[leonix007]

Hi,

I am using ASUS PRIME Z270-A motherboard, after working for a few months the big cable that goes from the psu to the motherboard
burned like this picture shows:



Here is the link to the image, I don't understand why it does not appear

https://imgur.com/MtXySTd

First time it happened with PSU EVGA supernova 750, this time with a Corsair CP-9020140-NA HX1200 so it is probably not the PSU.

I would like to know if someone else had this problem before and how to solve it?

Thanks!

I'd encountered this one, it happens when I connect the 3 RX480 GPUs to the motherboard, seems that the wire couldn't cope up powering up the 3 GPU's from the mainboard. I am now using powered riser to avoid that.

[ledsgo]

How were the PSU's connected together? How were the risers and cards connected to the PSU's? What kind of risers?

I have a mix of powered and non powered risers like the one in this picture:

[ledsgo]

I'd encountered this one, it happens when I connect the 3 RX480 GPUs to the motherboard, seems that the wire couldn't cope up powering up the 3 GPU's from the mainboard. I am now using powered riser to avoid that.


[/quote]

Yes that makes sense but it is still strange that it's been working for the last 3 months without any problems...

[Vann]

No wonder. The Asus Z270-A has no supplemental PCI-E power connectors. So all the power for the x16 PCI-E slots (up to 75W each) was coming from the 24-pin. No way you should use cards connected to the PCI-E x16 slot or unpowered risers to for dual mining with multiple cards. Get some powered risers.

[philipma1957]

I'd encountered this one, it happens when I connect the 3 RX480 GPUs to the motherboard, seems that the wire couldn't cope up powering up the 3 GPU's from the mainboard. I am now using powered riser to avoid that.

Yes that makes sense but it is still strange that it's been working for the last 3 months without any problems...
[/quote]

it was not working it was failing in slow motion.

you were most likely 100.5% of the max load  on those particular wires in the 24 pin cable

when you do that  you get fails in months 2-4.

been there done that.

lower clocks.
don't dual mine
use only powered risers

a little of all of the above.

[FFI2013]

I just got these https://www.amazon.com/gp/product/B076MP4M8W/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1 to try out and it's the first time I ever had all 6 risers work you know either one or two is dead or die a little later well its been 2 weeks and still no problems also dual mining I think just beats the crap out of your gpu's