I'm heading off to bed but I decided to give it another shot . You all know I have the 7CAP radio my receiver is the HiTec Supreme IIS Dual Conversion receiver so it will work with positive or negative. I have the HiTec dual conversion crystal in it also. I Can't seem to figure it out. I have everything fully charged even the battery now. I ran a check on the power of them but somethings not letting the servos work. ??????? I will try another crystal in the morning and see what happens then. The receiver is almost brand new never ever flown. The light on the receiver is bright green when the battery is connected to the switch, but still nothing. Thanks again, I will let you know how it goes . If all else fails I have an old receiver I can try.