@KaosEngineer
Thankyou for posting this obscure info about the ADM1032 chips relation to the temp sensors and fan high RPM/flashing orange light.
My Xbox decided to only show the logo then nothing and shutoff, then eventually no logo even.
Replaced every capacitor, and swapped the PSU, still no life.
Then I found this post.
Replaced the ADM1032 from a spares motherboard and everything is running solid again.
Thanks again, you saved another console