Transformer short

Hello, I put a new power cord on this type R and as soon as you plug it in, the short circuit light glows dim. All the fixed voltages are correct and both throttle voltages are correct also. Someone has been in it before because the resistor with the tap in the center is soldered at both ends to the circuit breakers. The center tap also looks to have been soldered. If I unsolder one end of the resistor it goes out. Any one also encounter this.