I got this gps in the mail today and put batteries in it, these were new batteries for a new gps. The power came on and I hooked up the USB to get maps on the gps. After I disconnected the USB and turned the power off, the power never came back on. I put a second set of batteries in and still no power. The power was on for no longer than 20 minutes. I would appreciate the help to solve this problem.
