Well that was the depth of my input . . . Sorry.

I have the opposite problem. I did the switch over on two different old key fobs into new fob cases. Both cars start and run fine but I can't get the new fobs programed to lock / unlock on either fob. I know I didn't damage the printed circuit boards and everything worked from the old damaged fobs. So as I said, I'm no expert on this. I'm still trying to learn.