I have a prusa i3 with Mendel firmware and a RAMPS board. Recently it has been randomly stopping during prints. The LCD screen will lock up, the print will stop, and the heating elements will turn off. Pressing the reset button on the RAMPS restarts the system and it works fine.
In addition to stopping during prints, it has also frozen up while just sitting while on.
My first thought is the power supply (12V 30A) is going bad, but is there anything else I should check before I buy a new one and replace it?
I replaced the power supply with a new one, and the printer did not stop and completed a print. I am voting to close the question.