I just finished recapping a mid-60's car am radio. Made sure all of the caps were within 20% and voltage of equal or greater value. All of the polarities are correct but now when I bench tested it.......nothing not even a pop when I turn the volume knob on. I was at least getting a pop before I began the recap but for some reason now I'm not getting any power? Got any ideas or suggestions as to what to look for next? Thanks for your help!