I just bought a Shure ULXP from ebay. They said that the microphone was tested and working. I come home to open the box and the sound is not coming out the the microphone I was hoping some body can help me?. I see orange lights on the RF and it seems good. I have the group and channel ready on the reciver and transmitter. But when I speak into it there is no light on the TX AUDIO or on my mixer board. I am very upset. Someone please help me!