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Reboot when heating noozle  

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alainp
(@alainp)
Active Member
Reboot when heating noozle

Similarly to this post , my MK3S+ reboots every time I try to heat the noozle (pre-heat, manual temperature nozzle or unloading filament...).   I inspected the nozzle and hotend to see if I did not damage them during nozzle change, but visual inspection does not show any issue.  What should more should I test to check for a short ? what can I fix / swap / replace  to get my printer to work again ? 

Thanks

Postato : 11/02/2023 9:09 pm
JoanTabb
(@joantabb)
Veteran Member Moderator
RE: Reboot when heating noozle

check the resistance of your heatbed and hot end heater

have you recently changed the heater?
some people change the heater and accidentally fit a 12 volt heater instead of a 24 volt heater!

a 12 volt heater is likely to cause reset on heating.
so is a short circuit heater

 

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK

Postato : 11/02/2023 9:24 pm
alainp
(@alainp)
Active Member
Topic starter answered:
RE: Reboot when heating noozle

Hello, thank you for your pointer.

I've only changed the nozzle, not the heater. Can you point me to where I should check the resistance and check for a short in the hotend ?

Postato : 12/02/2023 7:50 am
Hello
(@hello)
Noble Member
RE: Reboot when heating noozle

Make sure the wires connecting to hotend where they go bear aren't touching 

Please help me out by downloading a model it's free and easy but really helps me out https://www.printables.com/@Hello_474427/models

Postato : 12/02/2023 8:02 am
alainp
(@alainp)
Active Member
Topic starter answered:
RE: Reboot when heating noozle

 

It looks OK to me

 

Postato : 12/02/2023 8:08 am
JoanTabb
(@joantabb)
Veteran Member Moderator
RE: Reboot when heating noozle

I would disconnect the heater wires at the einsy board and check resistance there

 

Joan

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK

Postato : 12/02/2023 8:50 am
alainp
(@alainp)
Active Member
Topic starter answered:
RE: Reboot when heating noozle

Thanks. I do seem to have a short as there is continuity between the two wires of the heater.

How do I fix this ? Do I need to replace the heater / the extruder ? Which replacement part should I order ? Thank you for your help !

Postato : 14/02/2023 7:02 am
JoanTabb
(@joantabb)
Veteran Member Moderator
RE: Reboot when heating noozle

Good morning Alain,
where are you located?

If USA, then Printed Solid may be an option,   https://www.printedsolid.com/
If UK, then   https://e3d-online.com/products/prusa-specific-heater-cartridge-24v-40w-mk3?_pos=3&_sid=1e2145edc&_ss=r
elsewhere   https://e3d-online.com/pages/resellers

Or Amazon
Or Ebay
Or Prusa but shipping costs will probably make the item very expensive

for the Mk3 Series printer, you need a 24 volt 40 watt heater
Its probably worth ordering a thermister at the same time, just in case you damage the wiring when installing the heater.

Regards Joan

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK

Postato : 14/02/2023 10:26 am
alainp
(@alainp)
Active Member
Topic starter answered:
RE: Reboot when heating noozle

Thank you very much !

Postato : 15/02/2023 5:17 pm
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