Roger I have a 6105 that a recently cleaned and it was working fine. However I believe the end of the cable temporarily made contact with the water. Upon start up the power head would click which became annoying and after a while, it would run ok. However it stopped completely. I have tried plugging it directly into the controller and I used a power supply from an old tunze sneaker and still nothing seemed to work. What could the issue be? I have had it for a couple of years now. Thanks