This is a long shot, but I thought I'd try here before scrapping it...
When I moved into my house, I was told that the lift hadn't ever been used, so it may just be a simple electrical fix in order to bring it back to life.
- It's on a straight run of 13 steps and is 3.6 meters long
- The electric plug is in the box shown in Pic 2, so you would need to cut the wire for removal
So, if you want it, you'll need a bit of electrical knowhow and a big van!