Past attempts to thaw the plastic water fill tube included using an ice pick, a knife, & a hair dryer, unfortunately the early attempts with the ice pick & knife scratched the smooth plastic tube which caused it to hold water longer & freeze up faster.
The video posted with this part showed how simple it was to remove the fill tube from the back of the fridge in minutes.
I ordered a replacement part & had it installed in less than 5 minutes total.
No problems with it freezing up since then.