I have a Stern Monopoly game that has been working pretty well up until recently. In the last few weeks, the machine is sending out additional balls into the playfield while the game is in process.
This initially started with two balls being put into the lane at the start, but it has turned into ball after ball being shot out. I can be playing and balls just start shooting out, and as they drop down more get sent out.
I tried to look for an opto sensor down there but didn't see anything like some of the other posts are tried to review found.
Any tips would be greatly appreciated. I am at a loss for what I am supposed to do. I even turned off the adjustment for chaser ball.