I have a Oregon Scientific BAR208HGA weather station less than a year old. It has worked flawlessly up until last week. All of a sudden the outdoor temp doesn't show up on the screen. I put in fresh batteries and even brought the sensor inside, reset it, and set it right next to the weather station. The main unit shows that a channel has been found but doesn't display the temp. The temp and humidity are displayed on the sensor but don't display on the main unit. Any answers?