1. Got a question or need help troubleshooting? Post to the troubleshooting forum or Search the forums!

Unresolved Wire Melted?

Discussion in 'Troubleshooting' started by Chris Ryan, Jan 1, 2015.

Thread Status:
Not open for further replies.
  1. Chris Ryan

    Chris Ryan New Member

    Joined:
    Dec 30, 2014
    Messages:
    18
    Likes Received:
    0
    I set up a print when i was gone and when I got back it failed and one of the wires (pic included) seemed to melt.

    Also if I try to move anything in the settings it does not and it shows the temp as 0
     

    Attached Files:

  2. Ziggy

    Ziggy Moderator
    Staff Member

    Joined:
    Feb 20, 2013
    Messages:
    707
    Likes Received:
    530
    The pics are showing the damaged wiring for the thermistor. Which is the reason the extruder temperature is showing as zero.

    And when the thermistor is broken, the firmware prevents some actions as a "fail safe". The fact that your print stopped while you were away is a safety measure to lower the risks of fire.

    The thermistor wiring carries very little current so any "melting" must have happened because the wiring came in contact with something hot on the extruder. It's possible the wiring has caught on something and been stretched/broken rather than melted.

    Anyway you will need to repair the thermistor wiring and (probably) replace the thermistor in the extruder heat block.
     
  3. Chris Ryan

    Chris Ryan New Member

    Joined:
    Dec 30, 2014
    Messages:
    18
    Likes Received:
    0
    I touched the thermistor wire to the other broken wire and I got a reading for a temperature. Does that mean that the thermistor is still operational and the wire just needs repairing
     
  4. Chris Ryan

    Chris Ryan New Member

    Joined:
    Dec 30, 2014
    Messages:
    18
    Likes Received:
    0
    so all i need to do is solder the wires together
     
  5. Mike Kelly

    Mike Kelly Volunteer

    Joined:
    Mar 11, 2013
    Messages:
    6,967
    Likes Received:
    2,277
    Right and measure the resistance across the thermistor to make sure it works afterwards.
     
  6. Chris Ryan

    Chris Ryan New Member

    Joined:
    Dec 30, 2014
    Messages:
    18
    Likes Received:
    0
    Two things will soldering it void my warranty and how do i measure the resistence
     
  7. Mike Kelly

    Mike Kelly Volunteer

    Joined:
    Mar 11, 2013
    Messages:
    6,967
    Likes Received:
    2,277
    No but if you don't want to solder you can submit a replacement part request. Measure the resistance with a multimeter either on the plug or by probing the wire.
     
  8. Chris Ryan

    Chris Ryan New Member

    Joined:
    Dec 30, 2014
    Messages:
    18
    Likes Received:
    0
    I have soldered but i dont know how to measure resistance on a wire is there a certain resistance the wire should be
     
  9. Mike Kelly

    Mike Kelly Volunteer

    Joined:
    Mar 11, 2013
    Messages:
    6,967
    Likes Received:
    2,277
    It should be around 100k at room temperature. You don't necessarily need to check the resistance but it's a good idea.

    Do you mean you don't have a multimeter? or that you don't know where to measure from?
     
  10. Chris Ryan

    Chris Ryan New Member

    Joined:
    Dec 30, 2014
    Messages:
    18
    Likes Received:
    0
    I am probably going to solder the part so I can print from the printer and request a replacement part so the printer is permanently fixed
     
  11. Mike Kelly

    Mike Kelly Volunteer

    Joined:
    Mar 11, 2013
    Messages:
    6,967
    Likes Received:
    2,277
    Good plan :)
     
  12. Chris Ryan

    Chris Ryan New Member

    Joined:
    Dec 30, 2014
    Messages:
    18
    Likes Received:
    0
    thanks for your help
     
Thread Status:
Not open for further replies.

Share This Page