Possible Z-Axis motor failure - Help!
 
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Possible Z-Axis motor failure - Help!  

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JamesAllen
(@jamesallen)
Eminent Member
Possible Z-Axis motor failure - Help!

I walked in at the end of a sub one hour print to an awful smell and a smashed, nearly complete, print. The extruder was pushed down to the bed through the print. When I attempted to move the Z-axis using the control panel settings the printer made a loud shuddering noise with lots of vibration and would not move up. After manually adjusting the Z-axis and forcefully removing the destroyed print I ran a test, see link below for the video. If I grab either threaded rod while it is running it offers no resistance and stops attempting to spin. Any vertical movement of the attached X-axis assembly is always down and is caused only by the severe vibrations of the running motors. Both Z-axis motors seem to have a problem.

Any thoughts? Before this incident, I have had no problems with the Z-Axis.

How long is the MK2 warranty good for? I received the printer last August under my son's account ([email protected]). He gave up on it early on so I have claimed squatters rights to it. 😉

If the warranty has expired, what is the cost of replacing the Z-axis motors?

Link to Video (.mov) of z-axis failure (Shared from my OneDrive account):
https://1drv.ms/v/s!AggvxJ0buTbmgfhRxgCIKczwk6lL6g

Posted : 11/05/2017 1:38 am
JamesAllen
(@jamesallen)
Eminent Member
Topic starter answered:
Mini-Rambo short lead to z-axis problem

I think I found the root of the problem and it has nothing to do with the Z-axis. The heated bed connector on the mini-Rambo had a meltdown shorting out the Mini-Rambo. I am not sure what to do next.

Posted : 11/05/2017 5:08 am
JamesAllen
(@jamesallen)
Eminent Member
Topic starter answered:
Re: Possible Z-Axis motor failure - Help!

I decided to contact UltiMachine, the maker of the miniRambo board to find out what I could do about the damaged board. They are having me send it to them for repair or replacement under warranty. FYI: The minRambo boards carry a 1-year warranty. Hopefully, it will be returned by the time my Multimaterial upgrade arrives.

Posted : 12/05/2017 2:21 am
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