I doubt the spinner is causing the bonus light from rotating. That is controlled by the AS relay on the bottom of the playfield. They are a bit finicky to work on, but it needs to be clean to work well. There’s a couple of little circuit boards with wiper arms, and a ratchet sandwiched between. I have a four player Surf Champ so the pictures may not your game exactly. But I would take a look for it. Q-tips and isopropyl alcohol at a minimum may work. Taking it apart, cleaning, new dielectric grease, etc., should bring it back to life - unless it has a broken part. Hope this helps.
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Hoover, AL
