When friends and family ask for help, just say NO!

This type of repair may be possible to all of the Lemax motorised models.
Nasty cheap plastic, wires that fall off at the slightest touch...

Take some photos and make some notes for the wiring layout.

Small motors are available
https://www.ebay.co.uk/itm/3147335995...
Replacement motor pulley.
https://amzn.to/4auGXWR