Remote transponder problem
 

Guys ( I think I know what you're gonna say here )
I ordered a replacement key fob off flea bay , took the transponder out of the old one and put in the new fob case , tried it on the car and it doesn't work , so I then put it back in its old case and it still doesn't work ,
What could I have done ???

Broken it? :D

lol , are they really that delicate that you could break it by simply taking it out of its case ?