Confirmed from QIDI: "Firstly, please convert the power switch to 115V which suitable for your place's voltage."Simple fix, this unit just wasn't configured correctly for my region (North America). This same kind of switch can be found on power supplies for computers, just I was paranoid since this was a brand new printer and I didn't want to assume anything about it.Fuse is fine, and we've printed a couple things now (semi successful; will need to dial in temperature and speeds for the material, as usual). The "out of the box" example printed just fine, but it's not very exciting: a simple rectangular solid that took ~53 minutes to print. Then we sliced one of those toothpaste rollers and printed that; it's functional, but the key-end of the turning knob is just a little bit rough (I rotated it before slicing, probably shouldn't have). Anyhow, we're on our way to learning what this 3d-printing stuff is all about