Hi, I’m new to this forum and 3d printing. I recently bought a replica pursa i3 and assembled it correctly (I thought), when I first switched it on it immediately blew the fuse in the power switch. I then used a new power supply and wired everything correctly with a new 8amp 20mm glass fuse, now the lcd will light up but only when the usb is connected, I can heat the bed up with the options on the usb but I can’t get any power at all using the plug socket, when I do plug it in and switch it on I get a green light on the power supply and audrino board but nothing powers up. Any help would be greatly appreciated