Good to know about the melted parts. I bought it secondhand from the original owner, they had died and I got it for $40. I was starting to think that it was an outside source too. The defrost timer no longer advances, although the defrost does work.
I will cut a piece of sheet aluminum to replace the melted plastic. I don't want anymore water going into the insulation than is already there.
The refrigerator is not a Canadian model.