Flex 6700, win 7, 12.17 software. I have had the radio for about a month. The radio has been connected to the power supply and the power supply has been turned on for the whole time. This morning the yellow LED was not lit. I recyled the radio and the yellow LED was still not lit. I then powered off the power supply for a minute and then turned the power supply and the radio on. Everything worked normally on the radio. I then turned the radio off and the yellow LED did not light. What do I try now?