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Thermal instabilities on heated bed  

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murloc992
(@murloc992)
Estimable Member
Thermal instabilities on heated bed

Hello,

I wanted to ask what is going on with my heated bed. I have been seeing these dips at least once or twice per hour on long prints, but now it has gone quite insane.

Any ideas or solutions?

Postato : 18/07/2017 2:10 pm
JeffJordan
(@jeffjordan)
Utenti Moderator
Re: Thermal instabilities on heated bed

the temperature of the heatbed couldn't change that fast and in this erratic way !

so you've (1) either got your thermistor loose (check if it's fixed secure with kapton tape underneath the heatbed), a defective thermistor wire (2) or a badly crimped connector plugged into the rambo board (3).

yes, ok, it's possible that the thermistor itself is refusing its job as well (4).

most likely will be #2.

dem inscheniör is' nix zu schwör...

Postato : 18/07/2017 2:38 pm
murloc992
(@murloc992)
Estimable Member
Topic starter answered:
Re: Thermal instabilities on heated bed

Yup.. it was a broken wire.. Apparently I have ziptied it too hard or something and it just broke off..

Is it possible to replace the cable itself? Say I cut whole cable leaving few cms to the socket and the thermistor? Does wire gauge matter?

Postato : 18/07/2017 5:38 pm
JeffJordan
(@jeffjordan)
Utenti Moderator
Re: Thermal instabilities on heated bed


...Is it possible to replace the cable itself? Say I cut whole cable leaving few cms to the socket and the thermistor? Does wire gauge matter?

yeah, no problem. wire gauge doesn't really matter for the thermistor.

dem inscheniör is' nix zu schwör...

Postato : 18/07/2017 10:03 pm
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