Fan not working

My printer fan doesn’t work at all.
Yes I have even bout a new fan and tested it to see that it’s working in the shop. But once installed the absence of fanning action is exaggerating.
Everything else is working but the fan

what to do?

Does the LED come on for the fan?
Have you metered the wires?
Turned it on in manual mode and checked for voltage at the pins?

LED, no, and thers only 0,2V in the pins at the most

From you description it sounds as if the board may have an issue.


I already revised a new board since the other one had some issues