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Fan and motors stopped working

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Posted · Fan and motors stopped working

Hi all,

Just came across a strange problem.

I added some belt tensioners to my x-axis belts, loosening and retightening the pulleys to make sure everything is perpendicular.

Now when I turn on the machine, the electronics cooling fan doesn't run at all, and the x-axis stepper buzzes a couple of times then the whole thing is silent.

My ulticontroller is still working ok through all of this and the blue LED on the thermocouple lights up, but there is no cooling fan so I don't want to risk running it.

Going to test the fan header to see if there is voltage there, and run the fan off a supply to check it.

What else should I check?

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