Mini+ Powers off before doing calibrations print  

Mini+ Powers off before doing calibrations print

I have a Prusa Mini+ with the latest 6.4.0 firmware. I recently had to install a new hotend. The printer had sat for several months unused. After replacing the hotend I attempted to do a bed calibration print. The hotend heats up correctly, then the bed gets to 50 degrees and the machine shuts off entirely. I have to remove the power supply or disconnect it from the wall before the machine will turn on again. The machine is able to do the bed point calibration. I can individually head the hotend to 245 and I can head the bed to 65 but not at the same time. I have checked the fuses and they are still good. I also ensured everything is plugged in.

I immediately thought it was a problem with the power supply and purchased a replacement from Printed Solid. I received it today and when I did my test calibration print it shut off. So the problem is not the power supply. Not sure to check next to get my mini+ working again.