@gloomyandy Yes. I get it only once, when I turn the PSU off, which I expected.
It's not a big deal, just a minor annoyance.
I just wish to keep my logs clean. 😉

@whopping-pochard This is my current wiring for my SSR and PS_ON
SSR terminal 1: connected to switch NO and PSU neutral
SSR terminal 2: connected to switch C and power in neutral
SSR terminal 3+: +5V
SSR terminal 4-: PS_ON

With the Duet 2 I can hold the button for less than 1 second and the board will power up. With the Duet 3 I have to hold the button for 20-30 seconds. My goal is to figure out how to get the Duet 3 setup so I don't have to hold the button down for that long. The only way I figured that would work is if the raspberry pi was already powered on

Thank you very much, it works. I wasn't aware that some other power supplies had the same Problem.

@t3p3tony @dc42 - any updated on this? Will it still make 3.4? Thanks