Notifications
Clear all

Broken Thermistor Wire  

  RSS
JonPointer
(@jonpointer)
Eminent Member
Broken Thermistor Wire

Background:  I have an i3 MK2 that was updated to a MK2S extruder when Prusa sent me a prebuilt extruder assembly with wiring to fix a problem I had early on.

Unfortunately today I had a mishap with black Bridge Nylon that ended with a large glob around my extruder assembly.  I heated things back up and pulled off the glob, but unfortunately it took what I believe are the thermistor wires with it.  You can see the now disconnected blue wires in the picture below.  When that happened the machine started giving a max temp alarm.  

So, my question: is there some sort of replacement kit I can purchase to repair this thermistor (if this is the thermistor)?  At the Prusa Shop I saw the "Hotend thermistor E3D", but it wasn't clear to me that this is what I need - it doesn't look like what I'm seeing.

Thanks for any guidance!

Jon

...
Posted : 07/03/2021 12:02 am
JonPointer
(@jonpointer)
Eminent Member
Topic starter answered:
RE: Broken Thermistor Wire

Hmmm, looking at it more it looks like I will need to replace the entire Assembled Hotend.  Like this: https://shop.prusa3d.com/en/mk2mk2s/120-assembled-hotend-e3d-mk2s-mk25.html .  Sound correct?
Thanks again,
Jon

...
Posted : 07/03/2021 12:08 am
karl-herbert
(@karl-herbert)
Illustrious Member
RE: Broken Thermistor Wire

@jonpointer

You don't need to buy a complete hotend. A new heater cartridge and thermistor is certainly sufficient.
Simply remove the hotend, disassemble, clean and install the new elements. A heat gun is generally a useful tool in 3D printing (for cleaning and surface preparation).

You can buy the spare parts at Prusa. maybe there is also a dealer near you who offers these elements.

https://shop.prusa3d.com/en/mk25mk25s/122-hotend-heater-cartridge-e3d-12v-40w.html

https://shop.prusa3d.com/en/mk3mk3smk3s/205-hotend-thermistor-e3d.html

good luck!

Statt zu klagen, dass wir nicht alles haben, was wir wollen, sollten wir lieber dankbar sein, dass wir nicht alles bekommen, was wir verdienen....
Posted : 07/03/2021 12:28 am
JonPointer
(@jonpointer)
Eminent Member
Topic starter answered:
RE: Broken Thermistor Wire

@karl-herbert

Ah, I see - thank you very much!
Jon

...
Posted : 07/03/2021 12:32 am
cwbullet
(@cwbullet)
Illustrious Member
RE: Broken Thermistor Wire

If you have had a broken thermistor wire, you don't print enough.  

--------------------
Chuck H
3D Printer Review Blog...
Posted : 07/03/2021 1:12 am
JonPointer
(@jonpointer)
Eminent Member
Topic starter answered:
RE: Broken Thermistor Wire

@cwbullet

"haven't" had, I assume.  🙂  My printer runs almost constantly, so I guess I was due!  

...
Posted : 07/03/2021 1:37 am
cwbullet
(@cwbullet)
Illustrious Member
RE: Broken Thermistor Wire

@jonpointer

How many years?  I have 17 printers and 3 of them have been printing for 3 years.  You will get one eventually.  

--------------------
Chuck H
3D Printer Review Blog...
Posted : 07/03/2021 1:58 am
JonPointer
(@jonpointer)
Eminent Member
Topic starter answered:
RE: Broken Thermistor Wire

@cwbullet

Just one printer.  Bought it in 2016, but really in the past 2 years it's been running pretty much continuous.  First broken thermistor wire, thankfully!

...
Posted : 07/03/2021 2:15 am
cwbullet
(@cwbullet)
Illustrious Member
RE: Broken Thermistor Wire

That is pretty lucky!

--------------------
Chuck H
3D Printer Review Blog...
Posted : 07/03/2021 2:17 am
Share: