Hello [NAME]  yes, a main board and also suggest you to please use a different power supply.     Did I answer your query? Please click on ‘Accept as Solution’. ‘Kudo’ the posts you like!
I had a few R730 running, and one of them happened to refuse to boot. After connecting the PSU, PSU green light, yellow info panel off, IDRAC not working. Nothing happens on button press, except PSU light turns amber. And when I opened the lid, I found only one fan spining, and a yellow light around the IDARC card on. How can I rule out every other possibility and confirm the issue is with the MB (sadly)?
R730 PSU amber, cannot boot