Print fails a minute into second layer

[klens 0]

I'm using an Ultimaker 3 and have had some previous power supply issues (printer would restart during the plate heating up process of starting a print). I've found a work around this by setting the plate heat to 60C before starting a print. This skips the plate heating step at the beginning of the print and allows the print to begin.

 

The print now starts,  the first layer prints well and when the second layer started, the print core fans turn on normally. 

 

However, after about a minute or so into printing the second layer,  the printer turns off with no warning, then slowly restarts and shows the message "Print failed. Remove the print from the build plate." 

 

So it was able to start the second layer, the print core fans were able to turn on and run while still printing, but the system was not able to complete the second layer or the print. I have cleaned the print cores, made sure my material is okay, but think it might be a power supply issue?

 

This is already a replacement power supply because when the original is used, the printer does not initialize, no menu screen, no lights, and the fans for the print head appear to speed up and slow down continuously. The printer never shows the main menu. 

 

Thank you! 

[KarlFranz 1]

I just had the same issue with randomly aborted prints on my Ultimaker S5. 

I changed the Update-Channel from "Latest" to "Stable" and downgraded the Firmware to the newest stable one. Version 6.3 I think.

That fixed the issue for me.