My new to me LW3 has a row of lights out. On the board the transistor has been removed. Looks like I need a tip102 or tip122 resistor. I can solder but haven't attempted board repair yet. Can I just solder a new transistor on the board and see what happens? My concern is that someone just removed the transistor without replacing it so that makes me think something else is wrong. Maybe a short in the line? Any help would be greatly appreciated.