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Posted · UM2+ crash and reboot

We have been printing with our UM2+ for a year and a half and have loved it and had no issues.  Suddenly today we have the following symptom:

 

After selecting the file to print, the printer begins the nozzle/bed warmup normally.  Just as the indicator is showing that the nozzle is fully heated, the machine crashes and reboots as if the power were unplugged and plugged back in.  It always happens at exactly the same point, at peak nozzle heatup but just before the head/bed would start moving (no vibration yet at the point it dies).  A few other notes:

  • Printing from SD card
  • The power cord is securely attached (and again, the phenomenon happens before the head or bed start moving)
  • We are able to do other procedures which use heating and or head movement with no problem.  We can go through the procedure to replace the PLA or the procedure to adjust bed height without this reboot happening.

Any help appreciated.  This machine is just a very expensive brick until we can figure this out.

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    Posted · UM2+ crash and reboot

    The bed uses the most amount of power and the nozzle uses the second most.  What is happening is when both heaters are on and then the servos start you trip something in the power brick.  The probably is 99% most likely in the power brick.  Did you change the heater in the print head recently?  If not I think you should just get a new power brick.

     

    Quote

    Meanwell power supplies.  

    GST220A24-R7B
    GS220A24-R7B
     

    Try to get the "GS" and not the "GST" version if you can.  The GST is more efficient but the GST also is much more likely to shut off unexpectedly - in other words the GS has a larger headroom and can put out more power.  Both put out more power than labelled but the GS puts out more and the UM2 series printers basically need the extra power.

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