Power supply light and fence light both on and blinks but no charge to the fence. I replaced the circuit breaker and both fuses (1 amp) and nothing. I also have a New Model 57, ser. # 69-5119 and it does the same thing. What am I doing wrong? I have the chargers in the middle of the strand of fence, nearest to the power supply, but that should not make a difference, should it ? Any help would be highly grateful. Thank You.