Does the impellor spin freely on the shaft when it is out of the pump?
Mine tend to stick occasionally and I just take off the round screw-on attachment and it kicks in again, watch your fingers though.
Yip, I've almost lost a fingernail or twoyip that works, didnt know if I should share such a dodgy technique
What could explain powerhead, skimmer pump and return pump not working? Lightning, power surge? Eskom?