Guys, I could use some help here. When a lamp in column 8 is lit the adjacent lamp in column 7 also lights. I have checked the columns for a short but can't find any. When lamp 88 (star button) is removed the problem goes away. This led me to believe that maybe the diode for lamp 78 ( mirror multi ball) was bad. But when I reinstalled lamp 88 and removed lamp 78 the problem reappeared. I am not sure where to look next.
Thanks for any suggestions