My TT730 cant recognize the RDS-TMC reciever, I have also sent one TT730 to TomTom in Holland for repair, and they just switch to another unit. When I first tried the "new" TT730 it worked with the RDS-TMC reciever. But when I placed it in my car, I couldnt connect to the RDS-TMC reciever. I have tried to reset the TT730, and restored the software, but nothing helps. Anyone who had a idea of a solution of this???