Quoted from misterschu:1. Right sling shot doesn't score points or ring chime.
2. The lower switch on right slingshot changes the lit match number in the backbox. Both switches in the left slingshot change the lit match number.
The way your kickers work is:
- the two switches on either side of the kicker directly fire the kicker solenoid between them (last two coils at the bottom of the schematic).
- under each of the two kicker arms is a switch that should close when the kicker fires, which should in turn fire the 10 point relay (18-19 C on your schematic).
- the 10 point relay does all the heavy lifting (points, chimes, match unit, etc.) as shown in the manual:
Wild Card 10 pt relay (resized).jpg
So you need to figure out which of these isn't working. Start with the four kicking rubber switches and make sure that all four reliably fire the kickers. Then check that the kickers always fire the 10 point relay. Narrowing down where the problem is will identify which switches aren't working.
Your problems could be as simple as dirty contacts but you'll likely need something with a little more oomph than just alcohol and a swab. What you need to remove likely will require a mild mechanical abrasion. Start with a dollar bill or business card. If that doesn't work, try a flexstone or very fine (1000+) sand paper. Use the least aggressive thing that will do the job.
/Mark