This is what a burned trace looks like on a Bally solenoid driver board. Pinball Doctor Coin-Op Amusement Repair and Maintenance (406) 545-4824 (Let it Ring!) Posted on February 24, 2016 by pindocFebruary 24, 2016 This was the trace for the outhole kicker on a Bally . And this is the repair. It must have been a smelly fire.