The same thing has happend to me 3 times with the same TX, only once it did happen during flight and I wrecked my Alpha 40 and had to buy another. I would invest in a DX7I like I did, I never happend one time with that TX, I also know 2 others that have lost a bind with the DX6. Yes the DX7 is 350$ but it costed me 400$ to buy a new alpha, hope this helps a bit.