Original post by: Just Helping ,
There are only two things, assuming all connections are good, that would likely cause that issue. A bad heater cartridge in the nozzle, or the extruder 1 mosfet is damaged. Both can be replaced fairly easily. BoXZY sells the heater cartridges on their website. The mosfet is a IRF3205, It is located about 20mm past where the heater wires are wired into the board, directly in line with the wires, just before expansion 2.