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Ultimaker3 FW downgrade to Version 5.2.11.20190503

Thomas4711

By Thomas4711
in UltiMaker 3D printers

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Thomas4711

Thomas4711 0

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Posted · Ultimaker3 FW downgrade to Version 5.2.11.20190503

Hello,

I have done a FW upgrade of my Ultimaker3 to Verison 5.3.0. Now I am unable to print.

Whenever I send a printjob from Cura via network to the printer, Cura says "Printjob sucessfully sent to the printer"

The printer starts to lift the printbed and after aprox.  1 second the printer resets completely and does a reboot.

 

Does anybody know where I can download FW version 5.2.11.20190503 for Ultimaker3.

I never had issues with this FW version.

 

Thanks

 

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    Thomas4711

    Thomas4711 0

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    Posted · Ultimaker3 FW downgrade to Version 5.2.11.20190503

    I did some more tesing and found out, that the problem seemed to be related to the powersupply.

     

    In an overload condition the powersupply shuts down for a short time, then the printer reboots and the print fails.

    I measured the power consumption on the mains (220V) side, and found out, that during bed heating the consumption sometimes went over 210W. The original UM3 powersupply is rated 24V/220W.

     

    I have now replaced the original UM3 power supply with a 24V/500W model.

    The first testprint worked fine, no more resets, everything looks good. The printer seems to be stable again.

     

     

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