I bought a new fan which also did not work. Thought it might be the extruder pcb and bought a new one (and a new thermocuopler since I had the old pcb withhout connectors) but after installing fan still did not work.
Replaced the extruder cable but still no luck.. since I had the bottom side open to install new extruder cable I noticed this:
looks like the circuit copper 'burnt' through the paint layer on the pcb.
printer is still printing fine and for now I am controlling fans through external power supply but i guess this is the cause of my problem...
any idea of the costs of a new motherboard? and where to get? local official zortrax reseller doesn't sell these and don't see them in the zortrax shop either..
ps bought my zortrax in november 2014 and this is the first malfunction ever..