Greetings of the day!!!
Thank you for sharing the requested information.
Based on the troubleshooting done, and you confirm after the reset and booting up the Switch, the failure still persists with an error “PoE Fatal: Vmain (48V) fault has forced all ports on slot 0 to lose power.” this unit Should be RMA (Return Merchandise Authorization) in simple words replacing it.
Feel free to contact us via chat, comment you already have a post, copy the link from the post (URL) and paste it into the chat to start the unit replacement.
Please follow the below steps as shown in the below example:
As shown in the below picture, copy the link and share it via chat from the link provided below:
The below link is to contact us by chat (only)
Please let me know if you have any queries in this regard.
Lennar Home Community.