Question PC crashed while gaming with recently installed RTX 3080. Not POSTing after reboot and fans stuck at full speed. PSU the culprit?

[Urukiaga]

Now I've had this PC for more than 2 years now running a GTX 1080 with no problems. After installing the 3080 for the first time 2 weeks ago the PC kept turning off the moment a high load is placed on the GPU. I undervolted the 3080 to 0.800v @ 1710MHz and until today it ran fine with no problems. But what I noticed while using the 3080 is my PSU was running hotter than before compared to when I had the 1080 in it. I can't place my hand on it for more than 5-10 secs. Another thing I did today before it crashed was installed nvidia Broadcast and used the noise suppression (RTX Voice) option. It was fine for a few hours with it though. The PSU I have is a Seasonic Focus Plus Gold 750W SSR-750FX. I reached out to Seasonic support and it seems my unit is a first generation one with a known issue with GPUs with a high transient load. They recommend I RMA the unit so they can replace it with a newer one since succeeding generations have apparently have the issue fixed. The GPU I have is a Zotac Trinity RTX 3080. I feel that the issue is with the PSU because once I put back the 1080 it is still not able to post and fans just run at full speed. I've ordered a new 850w for now and will test it out once I get it. Anyone have any ideas on what went wrong?

 

[Vic 40]

Anyone have any ideas on what went wrong?

They told you,

it seems my unit is a first generation one with a known issue with GPUs with a high transient load. They recommend I RMA the unit so they can replace it with a newer one since succeeding generations have apparently have the issue fixed.

so rma.

 

[Kaizoku1994]

Now I've had this PC for more than 2 years now running a GTX 1080 with no problems. After installing the 3080 for the first time 2 weeks ago the PC kept turning off the moment a high load is placed on the GPU. I undervolted the 3080 to 0.800v @ 1710MHz and until today it ran fine with no problems. But what I noticed while using the 3080 is my PSU was running hotter than before compared to when I had the 1080 in it. I can't place my hand on it for more than 5-10 secs. Another thing I did today before it crashed was installed nvidia Broadcast and used the noise suppression (RTX Voice) option. It was fine for a few hours with it though. The PSU I have is a Seasonic Focus Plus Gold 750W SSR-750FX. I reached out to Seasonic support and it seems my unit is a first generation one with a known issue with GPUs with a high transient load. They recommend I RMA the unit so they can replace it with a newer one since succeeding generations have apparently have the issue fixed. The GPU I have is a Zotac Trinity RTX 3080. I feel that the issue is with the PSU because once I put back the 1080 it is still not able to post and fans just run at full speed. I've ordered a new 850w for now and will test it out once I get it. Anyone have any ideas on what went wrong?

did you get the new psu, and if so did it work?