Extruder Thermistor Problem
Hi,
i finished yesterday the building process of my Prusai3 so i start the Calibration part.
I had some problems during preheating because when i start "preheating" the display reload and show some strange characters, i figure out there's a short circuit in heated bed, i removed the skrews and remount the bed and now is working.
So, i selected preheating again and the bed and the extruder started heating and the extruder fan started working above 50deg. So everything seemed ok.
I moved to next step. After selecting "home axis" for calibration, The axis starts moving to 0,0,0 but I noticed there's a problem with the z-axis endstop so to avoid damage i switch off the power.
When i turned it on there was a MIN_TEMP error, so i reboot the system and after a while the error disappear, i started preheating again and now the extruder temperature was not changing. It was fixed to 21deg.
After a while some smoke went out from extruder zone. Worried about that i unmounted the extruder, thinking there was a problem with thermistor, i remove the skrew and the thermistor breaks in half.
What can i do??
Please help me, i would like to use the printer for some christmas gifts but now is broken! I was wondering to buy a new thermistor and try to sold it in place of the broken one but i think the pond would melt when extruder is heating.
🙄
Re: Extruder Thermistor Problem
Hi Robert
Welcome to the forum, sorry to hear of your difficulties.
Replacement thermistors are here: http://e3d-online.com/Spares/100k-Ohm-NTC-Thermistor-Semitec
You are correct in that these should not be soldered and ferrules to crimp the connection are here: http://e3d-online.com/Spares/Ferrules-for-joining-wires-Pack-of-10 and fibreglass sleves here: http://e3d-online.com/Spares/Fibreglass-Sleeving
You could possibly find replacements on eBay, but I prefer to purchase originals.
You also need to check the connection on the RAMBo; it sounds as though it may have been a tad intermittent.
Peter
Please note: I do not have any affiliation with Prusa Research. Any advices given are offered in good faith. It is your responsibility to ensure that by following my advice you do not suffer or cause injury, damage…
Re: Extruder Thermistor Problem
Thank you Peter for your help.
I asked support to main site of Prusa3d and they will send me a replacement part for free.
I really like this service!
🙂
Re: Extruder Thermistor Problem
Hi Robert
Great news, and thanks for letting us know.
You will find that it's good to have a supply of spare parts with you so that when things do wear out, you don't have to wait.
Please come back and upload some pictures of your prints; let us know how you are getting on...
Peter
Please note: I do not have any affiliation with Prusa Research. Any advices given are offered in good faith. It is your responsibility to ensure that by following my advice you do not suffer or cause injury, damage…