I have broken the collar sleeve that holds the collar to the receiver on the dogs neck.
I have broken three of them over the years.
Tri Tronics charges in excess of $100 to replace the receiver.
I thought I would pass on that Permatex has a product that repairs the black plastic.
The product is Perma Oxy 5 minute Black Plastic weld.
It bonds wonderfully. Sets in 5 minutes and dries black.
It may take a little sandpaper to smooth out.
Hope this saves folks time and money!