How The Scanning Bonus Unit Works In Chicago Coin's Riviera Pinball

Joe’s Classic Video Games documents an in-progress electromechanical repair of a 1973 Chicago Coin Riviera, focusing on cleaning relay contacts, adjusting cam switches, and replacing a worn bonus stepper unit arm. The host reports the machine now starts games after a score reel was manually reset, but the stepper repair and remaining back-box work are still pending. The video is a practical teardown with notes on common Chicago Coin failure points such as brittle plastic cams.