I have a black magic fan and it works
fine ... ... when blades turn...
The kind of black box we must install
in the circuit act as a resistor and
in my case the fan works 5-10 min then
stop because that resistor become to hot.
The black box when hot became an open circuit. If it did that one time it will
always do. I have not solved the problem yet and maybe that s your problem too. just chek
that dawn box.
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