Page 1 of 1
Extruder over heats on power up
Posted: Sat Nov 26, 2016 1:17 am
by pf_drj
Just received my Prusa i3 aluminum 4 days ago. Completed the build last night and when I turn on the machine the extruder over heats. I have no control over the temp at all. The only way to get the temp down is to turn off the machine. Please help!
Re: Extruder over heats on power up
Posted: Sat Dec 03, 2016 5:47 pm
by William
Hi,
You can try unplugging all the wires except for the power cable and the lcd cable to see how it goes.
Re: Extruder over heats on power up
Posted: Sat Dec 03, 2016 7:34 pm
by russellz
William wrote:Hi,
You can try unplugging all the wires except for the power cable and the lcd cable to see how it goes.
Well that will certainly stop the extruder overheating!
It may help if you leave the extruder heater and then check with a multimeter across the pins for the extruder heater. If there is 12 V there it is most likely a faulty mosfet on the GT2560 board as the heater shouldn't be powered up on switch on.
Russell.
Re: Extruder over heats on power up
Posted: Tue Dec 06, 2016 2:34 pm
by William
Hi,@Russell
You're right.That's the next step.