Main volume knob doesn't control the volume on 3k

eastwood wrote:Check all the connections circled in yellow (mainly the 2 grey wires with multicolored end's really!) to make sure the connector blocks or "sockets" are seated firmly in place and no pins are bent! disregard the one in to top left blown up pic P5 that is for the display contrast/backlight switch!

I had the same problem with noticing both of my main volume and record pots didn't work. Come to find out I had the connectors P104 & P103 swapped. It all works now.
What a dumb ass mistake!