helix_3

From 2016-2020 I ran a Makergear M2 with a RAMBo V1.1, and it worked well for thousands of hours. Eventually I mothballed the printer- it had become very worn, and it started shifting along the X-axis on a specific 14-hour print. However now I'm building a CNC machine, and would love to use the board- assuming I can be certain it isn't going to glitch out on me again. Unexpected motor movements during a CNC operation can be pretty dangerous. Additional details: The issue happened both when printing over USB and from SD The shifting happened on one specific print, a big highly textured dome. The print was a 61mb gcode file. I didn't check to see if it would happen on other large prints Looking at other old gcode, most prints were smaller than this, but it appears I printed a 96mb file at least once without issue The shifting happened at random heights, and then would continue like normal The shifting was not caused by nozzle dragging. At one point I watched the shift happen- the print was happening like normal, then it suddenly shifted a few mm, and continued It was circular, so the X and Y motors were always working. During the shift simultaneously the Y stepper would stop moving, and the X stepper would move the head outside the perimeter of the print This kind of problem had never happened in the thousands of hours of use prior, and I hadn't done any firmware/ slicer changes before it started happening Was running M2Marlinx1619V firmware My best guesses are A) The board is failing after many hours of service or B) The board was somehow being freaked out by a large gcode file C) Some other thing I hadn't thought of Does anyone know what the cause could be? Should I just bite the bullet and buy a new board?