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Apr 2016

Hey guys,

I had trouble with the two fans on my hot end before, i taught the motors in them burnt out, so I got replacement fans. They arrived today and I installed them but it turns out the new ones wont work either.

Does anyone know what could be the problem?

Are the well/correctly connected.

Aren’t the wires broken?

Look at where the fans connect to the wires and more importantly, where the wires connect to the circuit board. Does that connection seem loose? If you stick a voltmeter to it, does it show any readings? If it doesn’t, try re installing your filmware, other than that, a bad board would be likely.

The wire connections seem fine and I thoroughly inspected them after installation… It could possibly be the circuit board… I hope not… how can I test the connection point where the fans go into the board?

If you have a multimeter or voltmeter, select the DC Volt setting (labeled as Vdc or VDC or DC) and touch one lead to one pin on the circuit board.

Hi,

Activate manually the FAN in the Repetier software (manual control window).

Then plug a Voltmeter at the FAN output of the circuit board (at hotend level).

Do you measure a voltage?

Try the same measure at the FAN output of the mainboard.

If you d’ont have any voltage, your circuit board or your mainboard should be defective.