Bought a pre-owned tk-2170 on fleabay and wrote my DTMF file to it, which went fine. But as soon as I disconnect the programming cable it starts beeping and will not transmit. It changes channels and everything, the words come up on the screen fine, but it won't stop beeping as soon as you turn it on.I can program other files and it (seems to) work fine. But as soon as I program the same DTMF file I've used in a dozen radios (and other very similar DTMF files) it starts beeping and won't TX. Any ideas?