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extruder not working

Posted by ldb15 
extruder not working
June 20, 2016 03:05PM
My extruder and heated bed on my prusa i3 are not heating up. it shows the heated bed is plugged in but not the extruder even though I checked the connections over 5 times.It is also not letting me turn it off of idle mode.

please help.

Re: extruder not working
June 22, 2016 11:12AM
Hi Logan!

Can you show us your electronic board wiring?

When you hit the heat button, do you see any LED lighting on your board?

What firmware are you using?

Hotends, Extruders, Liquid Cooling and Accessories.
Re: extruder not working
June 22, 2016 05:43PM
Hi Logan,
First of all, what user interface are you using? LCD on the printer? Repetier Host? Octoprint? Something else? A screenshot or photo would be good.

When you say "it shows the heated bed is plugged in" how does it show this? Is it showing a temperature for the heated bed?

When the heaters aren't running, the temperatures of both the bed and extruder should show room temperature (about 15-30C). If either is showing 0, it means the thermistor isn't connected to the board. Check the skinny wires. Until you have the thermistor right, the corresponding heater won't work. To prevent uncontrolled heating (and therefore potentially a fire), the firmware won't turn on a heater if the temperature reading is too high (over 250C) or too low (0C).
Re: extruder not working
June 23, 2016 01:55PM

Do your thermistor show a temperature for print head and bed?
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