Hi! I started repraping not so long ago and I already run into troubles: After I plug power to Melzi board extruder heater starts heating. Temperature sensor works ok - I can see proper reading in Proterface. I measure output for extruder and it's 12V constantly, no metter if termerature reached it's target set in Proterface. It's 12V even if don't turn on extructer heating. Everything except thby wargol - Controllers