Yeah if the rx is toast from a crash then the crystal is too...I ordered a rx and xtal from tower ,hooked it up to a battery and nothing,,sent it back ,they said nothing wrong with it..I get it back ,hook it up again...nothing,,turns out I hooked it up to a servo that was bad, still packed in the original box ,the other 3 worked fine, but not the one I picked out to test...no good...Rog