Well it's still waiting to be resolved. The RCA plugs and that they screw into the anodized frame. To isolate them is a lot of work because the mount is so thick. I can make a common ground point to the chassis and the jacks and run that back to the star point on the power caps. No sure if the anodizing has and resistance or other funny stuff. Normally it is best to not groun the jacks but run the ground to the control board.
Everyone's input is required to solve this one.
Everyone's input is required to solve this one.