Hi everyone, I hope I can find some help here This is a 6 week old Prusa i3, I'm not sure if it was ever working. The previous owner wasn't successful but he admits to not being technically minded at all and he didn't finish the assembly as far as i can tell (the hotend was still in the bag) Now, my experience with it - Pronterface connects fine to the printer, but when I tell it to set the temperature of bed or hotend it sets the target and then just leaves the hotend and hotbed at whatever temperature they are. No change in either. The hotend graph on Pronterface shows a constant 24 Celsius with minor deviations to 25 and back again. I've tried Marlin, it gave me constant endstop hit errors, zero movement and no response on heat, although the bed did rise in temperature when requested, and pronterface indicated accordingly. I'm now on Sprinter (not modified), and I get no heat on hotend, none on bed, and no movement. In Arduino IDE, i am able to send blinks and stepper tests to the printer, the LEDs on the printers board light up and flash in red. No movement on printer though. I would also appreciate some help in where what should REALLY be connected in terms of wiring. I have a fan that came with and no idea where it should go, with what I believe to be the "lever" referred to in forums, but i dont know where this fits in. Did I damage the printer electrically? Is the wrong thing plugged into the wrong port? I dont know I'm looking for any information that can help me diagnose or at least get moving in some direction.