I have been working with a Mitsubishi support person and I think he is stumped. We were trying to troubleshoot the pre-amp and scale in the electrical box on top the spindle. See attached pics. Once he saw the pre-amp board and layout he is not sure it’s original and is not quite sure where to go from here I am afraid. Anyone really good with the knowledge of how the pre-amp and scale work and how to test so I can find out why the spindle does not orient and will not thread. Machine runs great other than these issues. Please help if you can! Many thanks!