Magellan Roadmate760 Hello. I have a problem with my GPS maintaining a signal. i was told by their tech support (in India) that i should try an external antena, but why would it all-of-the-sudden stop working? is it necessary to send the unit to Texas to be looked at or is there someplace in central/eastern MA that might be able to solve this problem? Thank you for your time. Ed

the same problem occured with my 760-I shipped it back with a pre-payment of $140 to have it returned with the same problem-many phone calls later-with poor communication due to their poor  english- I just received a miestro 4010 unit-  I paid $ 1013 for my 760--the  4010 is listed in the  300 range-- I will never  buy a magellan product again--garmin is the unti to purchase!!!! the same problem occured with my 760-I shipped it back with a pre-payment of $140 to have it returned with the same problem-many phone calls later-with poor communication due to their poor  english- I just received a miestro 4010 unit-  I paid $ 1013 for my 760--the  4010 is listed in the  300 range-- I will never  buy a magellan product again--garmin is the unti to purchase!!!!