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Duet FW:
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Print cooling fan won't power on. SEE BELOW:
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In some cases, the fan output on the board itself can be damaged. This might happen in case of the fan wires being shorted together or other damage to the machine. It is not necessary to replace the controller in this case, as there is a spare fan output on the control board which can be used in place of the original fan output.
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Turn of and unplug machine before performing any electrical service or opening control panel
Updating the configuration file
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