Shots to the Heartbreak Hotel never lock a ball, so its multiball can never be started.

Heartbreak Hotel multiball never starts: lock post assembled upside down

Cause: The lock post had been reassembled with its C-clip below the bracket instead of above it, so the post was always pulled down. The ball never rested against it and never made the switch above.

Checks

• With the playfield up, see whether the hotel lock post sits up in its resting position.
• Check the order of the C-clip, spring and bracket on the post assembly against the manual.

Fix

• Rebuild the post assembly with the C-clip above the bracket so the post is held up, then check the switch closes with a ball resting against the post.

Systems

• Sega/Stern Whitestar

Games

• Elvis

Source: Pinball Repair help group!! (Facebook group)