Hey everyone, first time builder here, but an engineer so not a total noob. Problem I am having is on my Prusa i3 rework I am building I turn it on, it boots, and then after about a second it appears to freeze, buttons on the LCD controller don't do anything. Within that second I can navigate menus and such, but then after a second it stops where it's at, no beeps or clicks or anything. Using Marlin firmware 1.1.0, the full graphics smart card, ramps 1.4 clone and a generic Chinese Arduino, wondering if the knock off Arduino might be the issue but thought I would ask the community before I order a "name brand" unit. Motors, extruder fan, and heated bed not wired in yet but everything else is. When it boots up to the information screen, x y and z all say "-----" and it says ERROR: MINTEMP on the bottom. Any ideas or should I just replace the Arduino and go from there?
Thanks!