I was figuring the board might be defective but then again it could be the PSU. I'm afraid to hook it into my old board to try.

@t3p3tony the nema16 I believe. I did get a new PSU and maybe I had the polarity backwards? Or both ++? The new PSU has the labels shifted I noticed. I removed all the wires and rewired it after the fuse blew to prevent any damage. But I think it may have been to late

I just setup a duet 5 and when I powered it on and blew a fuse. I replaced the fuse and checked connections. I repowered it and it seems to have melted the drivers.

Are there any plugins that allow the user to change the current selected machine?
If not I could see adding this in would be easy and could probably do it .