I'm troubleshooting a lamp matrix problem and need help. Column 5 is out, I know which transistor needs replaced but I want to make sure the column is not shorted somewhere on the playfield before plugging the mpu in after repair. I'm unsure of the location of some of the lights in that column. Referring to the lamp matrix, I know where #'s 33-37 are located, but I'm not sure where 38,39,40 are found.
Thanks