Geeetech

Yes, it's the PWM socket that is no longer working. I've check the voltage and it is always 4.3v no matter what speed setting I have the fan on.

I have a cooling fan connected to my i3 al pro printer, and all was working well for a while, however I used the LCD menu control to 'stop the printing' and it caused some issue with the control board. Now I have no control over the cooling fan as it is always on. Has anyone encountered this before ...