Working on my AFM backbox lighting. Got all to work (mostly broken sockets) except one string. Went as far back as J106 Pin 11 (6.8VAC) (white/violet) and Pin 6 (return) (violet) and get no voltage. Without schematics it makes it a bit tougher to troubleshoot. Anyone have an idea as to which transistor controls this string? I know I could remove the board and trace the circuit path but was hoping to avoid that if possible. I don't want to introduce any new problems. Thanks.