I am having an issue with one of my 6105 pumps. 1 power supply will not run either pump and the light is on solid unconnected and flashes when connected. The other supply will run 1 pump only. On the pump that does not run, the metal shaft comes out with the impeller. From what I've read, I feel I need to order a new power supply, but on the pump that does not work do I need a new impeller or do I need to send the pump in? Thank you, Kurt.