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UM3 randomly shutdown during print


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Posted (edited) · UM3 randomly shutdown during print

Hello,

 

I have a problem with my UM3: it restarts randomly during a print job.
I already had this problem a few weeks ago, it disappeared then reappeared. Now it's systematic and random during printing.


I first suspected my print head cable and changed it, it wasn't in great condition. That didn't change anything. 

 

Here's a list of different info:
- original printcores
- printbed heating is proceeding normally.
- machine fully reset

- test with different usb drive

- Cura 5.4 and 5.3 firmware


I think it may be my power supply failing, but I'd find it odd if it happened randomly during printing and not during heating.

 

 

I've attached all log files in a zip. Also, is there a tutorial to know how to interpret its?

 

Thank you!

 

log UM3.zip

Edited by Macooki
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    Posted (edited) · UM3 randomly shutdown during print
    6 hours ago, thomasm said:

    I had the same problem, have you solved it yet?

    Nope 😢

    How you've solved it?

    Edited by Macooki
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    Posted · UM3 randomly shutdown during print

    Some news, i found a cable that was a little clamp, not cut at all, and change it.

    Unfortunately nothing change...

    I'll try dissasemble the printhead and check if everything is good.

     

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    Posted (edited) · UM3 randomly shutdown during print

    I completly disassembly my printhead and deep clean it with isopropyl alcool, two things occur to me:

    - the screw that hold printhead's pcb was a little loose, now it's steady. To be more accurate, the nut was not glue onto the PCB so the screw couldn't be tighten without holding the nut.

    - there was some oil on the PCB

     

    I think it was those two things that occur that crash

     

    I just launch a print, i'll be back to tell you if it was these.

    Edited by Macooki
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    Posted · UM3 randomly shutdown during print

    So it crash again, i'm going to buy a new power supply...

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    • Solution
    Posted (edited) · UM3 randomly shutdown during print

    And it was the power supply... Everything is perfect now

     

     

    So for people questioning, if you can printing without any problem on your UM3 but your leds are flikering time to time, i think it's beginning of the failing power supply before it completly failed. With a new power supply leds lights aren't flikering anymore 😉

    Edited by Macooki
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