C117 is always the liar.
He soldered in the new one, powered up the SM-320, and placed a 10kg test weight on the platform. digi sm-320 service manual
The file was ugly. Skewed pages, coffee stains digitized into eternity, handwritten notes in the margins from a technician named “J.C.” who had last serviced a unit in Milwaukee, 2004. C117 is always the liar