Hi
I just assemblet my new ultimaker and it worked fine so far, except the heater head cooling fan doesn't want to run.
Signal was sent by gcode.
So I checked the following:
Fan runs if I connect plug to external source. As well as to the cooling fan connector on the pcb for the fan on the bottem, So, fan and wiring can not be broken.
I checked voltage on the connector for this fan, and depending on the Speed i define, I have voltages between 14V and 19V. Even if I turn of the fan by gcode.
So it seems to me, that I have voltage, but somehow the wrong one. I also tried with other fans, they don't work either.
Can somebode help?
I checked the welding of the Transistor (BD679) mentioned in another discussion, but I think the welding is fine.
Can anybody help?
Thank you