I am working on a JLG 1930es from 2004. Unit powers up from the ground position of the switch, but nothing happens when switched to the platform position. Power from the switch goes directly to the printed circuit board in the ground control box, when the ground position switch is in the on position a surface mount relay on the board clicks, a red led comes on, and my analyzer powers up. However in the platform position there is no relay activation, no red led, and no analyzer display, due to no power. The pcb supplys power to all systems according to the service information I have found as well as power to the analyzer. Therefore I replaced the pcb and I still have no power in the platform position. Any ideas?