Well. Went back to JL, they said they’d refund me, but I’d forgotten to bring the thing in. D’oh! Went back again with it, they refuned me, and then I thought I’d try my luck and ask for some vouchers or something as goodwill since I’d bought black ink for the thing elsewhere on the way home and opened it, so I was £13 out of pocket. The guy went to see his manager, and was gone ages – turned out the manager had found the missing bits 🙂 So they sold me the printer back again less the £13 I’d already spent on ink, and including the colour cartridge too!
Moral of the story: John Lewis are awesome!
All I then had to do was figure out power. I happened to have a pcb mounted power socket that fit my laptop power adapter, so I took the printer apart to replace the power socket. I managed to break off all the pins on the socket though, so some extreme micro-surgery was necessary. Moral of this story: I am awesome!