Noticed this a few days ago. Dorothy's house doesn't spin anymore. No movement when the game first boots up, nor at anytime during gameplay.

When I try to make it spin in the Device Test Mode, I DO hear a faint mechanical whirring noise coming from under the playfield. The motor seems to be doing (or at least trying to do) SOMETHING down there. I can spin the house freely with my hand, so I don't think it's getting bound or stuck on anything.

Any thoughts or ideas? All input is GREATLY appreciated!

Thank you Eric! I will check that later.
Can you possibly tell me which part that screw is listed as, on page C40 or C41 from the manual?
Thank you!

Thank you SOOO MUCH, @hogbog!!! That was it! I found the motor shaft set screw when I removed the Munchkin playfield, and INDEED it was very loose. Tightened it up, and the house spins fine now! Really appreciate your help!