https://wccftech.com/asus-rog-maximus-z690-hero-motherboards-might-have-a-serious-defect-several-reports-of-boards-burning-up/

ASUS might have overlooked a serious flaw in their latest ROG Maximus Z690 HERO motherboard as several users have reported cases of boards burning up and failing to post.

Over in ASUS ROG Forums and ASUS's subreddit, there are several reports of the ROG Maximus Z690 HERO motherboards burning up. There have been at least six reports in the past few days and several users who got their RMA units have seen the same issue occur, even on the newer boards.