My 236 SAN belly ballast pump quit working the other day. When II hit the button on the key pad I hear a click under the dash, I am guessing in the relay. I got to the pump this afternoon and took the plate off the back to inspect the rubber impeller, it seemed fine, I took it out and tried to spin the shaft, it was a little hard at first but then it came free. I did not have a volt meter with me to see if it was getting power, I guess I will try that tomorrow. Any ideas?